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View Full Version : MY DAX MK3 STEERING UPGRADE: To Corsa B EPAS and Quaife Rack Current MK4 Spec.



Bannon
20-07-18, 10:12 PM
My Dax Cobra is a Mk3. I've owned it for around 18 months and it was built by a retired aircraft engineer colleague of mine. Chassis ordered in 1990, finally SVA'd in 2003. The result? A VERY low mileage, but old-spec DAX. My dream car - at last - in my possession. Extracted from it's birthplace - a lock-up garage - with only 130 miles on the odometer, I carefully got it running again, MoTd, and hit the road.
I love it. It's solid, the suspension soaks up the shitty roads well. But the steering. The steering is a real disappointment. It's too heavy, it tram-lines, it bump-steers dangerously. Therefore, my current project is to remove the modified Triumph Dolomite rack, mounting points and column assembly, and replace it with the current spec which is Vauxhall Corsa 'B' EPAS (Electric Power Assisted Steering) column, with the bespoke for Dax, Quaife rack and associated parts.
So - my plans to get the fabulous DAX (previously Dave Brooks) Le Mans hardtop are shelved to make way for this upgrade. I hope my forthcoming posts are of use to anyone thinking to do the same and I'll welcome any posts, comments, advice or criticism along the way.
I'm sure this will transform my car and make it awesome to drive. Let's see. :cool:

Bannon
20-07-18, 10:40 PM
Shopping list: (all prices are approx)
Vauxhall Corsa 'B' EPAS steering column. £125.
ECU Controller Module (supplies artificial signal to the Vauxhall ECU) £20
Steering Wheel Boss. Used. £20.
Quaife Steering Rack. £600.
DAX Adaptor Kit. £125.
DAX Column Modification Service. £50.
DAX Rack Mounting Bracket (to weld to chassis). £55.
DAX Splined Shaft (long) £30.
DAX Supplied Universal Joint. (QTY 2) £100.

£1015. Plus Christ knows how much in consumables, the odd tool, odds, ends, etc. You get it.

Now - if you have Dolomite switch gear, (indicators, wipers, etc), I think you can retain tem. I have bought MK2 Fiesta stalks and loom plugs which I can fit using the DAX supplied (included in kit) adaptor fitting. I might not bother at this stage, as my stalks are working fine. Incidentally, I have rotated the whole switch assembly to place the indicators on the left side of the column - just for personal preference.

While I remember - CARBUILDER SOLUTIONS!! Neil Foreman is an outstanding engineer. I've followed this guy since I was a teenager, reading his monthly installments of his Ferrari P4 replica build every month in 'Which Kit?' mag, in awe of the standards he would strive for - and exceed - through his home build. His blog for their final 'keeper' P4 build is incredible and continues to fascinate me and I recommend you check it out. I'll dig out the link to it.

I'll take some pics tomorrow, not done too much yet really.

Joerg
21-07-18, 10:17 AM
Hi Bannon,

as i know, DAX used the steering column from the sierra in the past. They took also the switches from there.
The DAX EPAS Solution is sierra switch compatible.
Hope that helps. If you have any questions in detail - ask John Kox or Adam from DAX.

Regards
Joerg

Bannon
21-07-18, 11:51 AM
Thanks Joerg, my car is pre-Sierra column though - with Dolomite column and switches. Sierra column came a few years later.
Here are some pics of progress so far, and of the 'kit' that I have put together.

http://www.cobraclub.com/forum/attachment.php?attachmentid=36205&stc=1

Bannon
21-07-18, 11:53 AM
http://www.cobraclub.com/forum/attachment.php?attachmentid=36211&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36212&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36213&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36214&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36215&stc=1

Bannon
21-07-18, 11:55 AM
http://www.cobraclub.com/forum/attachment.php?attachmentid=36216&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36217&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36218&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36219&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36220&stc=1

Bannon
21-07-18, 11:56 AM
http://www.cobraclub.com/forum/attachment.php?attachmentid=36221&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36222&stc=1

Bannon
21-07-18, 12:04 PM
Sorry for the random order of the pics. I have two kids running riot so no time to be too fussy about things. The Shots of the new column show the DAX adaptor brackets fitted, the modified lower shaft fitted, and also the chopped-down top bearing housing which is now the same diameter as the column tube. (39.5mm approx). There is a pic of the old chassis bracket that I removed, and a pic of the new bracket which is ready to go in. You'll see that I have bare-metalled the chassis for it. In another shot, you can see that I've left a stub of square section on the chassis rail. This is where I will relocate the earth lead from the engine. If I'd cut it off I would have had to weld a new tab on, which seemed a bit pointless. I'll weld a nut inside it, cap it off and job done. :cool:

Joerg
21-07-18, 12:27 PM
Looks perfect - very good foto documentation .
Enjoy the build.:grin:

conrod
21-07-18, 01:03 PM
A couple of tips from my experience of doing this job a few months ago.

1) Before you install the column, check that the position/torque sensor is working OK and correctly centred with a multimeter. In my case, the sensor was faulty, so I was able to get a replacement sensor before completing the installation.

2) No matter how carefully you line up the steering wheel on the column spline, as soon as you drive the car it will end up offset. No problem, I thought, as I had purposefully only tightened the column nut slightly. However, no amount of tugging on the wheel and use of knees would get the wheel off - so I then had to buy a suitable sized puller!

3) Make sure you use top quality yellow crimp connectors for the power and fuse connectors. The ones from Halfords and other motor factors aren't man enough, and will pull off. I ended up ordering some online and they were noticeably heavier than the others, and crimped up nice and tightly.

4) The Corsa EPAS columns have been known to misbehave (usually sensor related, and more often the C rather than the B columns), so for safety I fitted a dashboard mounted switch to cut the ignition detect wire from the ECU. That way if it does start behaving erratically whilst driving, you can quickly disable the power assistance.


Having said all that, fitting the column using the Dax bracket was a doddle. I made things difficult for myself by deciding to move from the Sierra to the Corsa B switchgear, and it was quite an interesting experience - complicated further by the fact that I also introduced a programmable intermittent wipe relay into the equation! I'm planning to pull together a Snake Torque article on what's involved in due course.

I kept my later but non-Quaife steering rack, but certainly in terms of the EPAS conversion you won't be disappointed. I recently spent a glorious ten days throwing my Dax round hairpin bends in the Alps, and it made the experience even more enjoyable than usual.

Good luck!

Bannon
21-07-18, 01:38 PM
Wow, great advice there, thank you. I'll check out the column sensor next time I'm in the garage.

aaronjb
23-07-18, 09:05 AM
1) Before you install the column, check that the position/torque sensor is working OK and correctly centred with a multimeter. In my case, the sensor was faulty, so I was able to get a replacement sensor before completing the installation.

I don't suppose you have a link to any destructions that describe what to look for, do you? :)

conrod
27-07-18, 03:57 PM
Sorry for not replying sooner Aaron - I've only just seen this now my mysterious forum access problem has miraculously disappeared!

The first post in this thread:

https://www.migweb.co.uk/forums/other-mechanical-electrical/344487-corsa-electronic-power-steering-information.html

has some useful info.

The Corsa B sensor has six wires compared with four (I think) on the Corsa C. I opened the duff one I had and it has a two-wiper variable potentiometer (aka stereo volume control) inside. I can't remember which wire is which now (I can check if required), but each has three wires (one for each end and one for the wiper arm). With a multimeter attached I turned the sensor assembly until I got the same resistance reading for the wiper to end A as I did for the wiper to end B (which means the wiper arm is in the centre position) and then tightened the two securing bolts and applied a hot glue gun to prevent it moving.

I suspect the Corsa B uses the second wiper as a backup in case the first fails - and, as it has fewer wires, I assume the Corsa C one doesn't have this redundancy. This may be why it's generally considered to be less reliable than the Corsa B one.

Another tip - I also found that, once installed, there was lateral play at the steering wheel end due to a worn top bearing. This is a special double bearing assembly (GM part number 90334860) which is in theory no longer available. However, I managed to find a supplier - go to http://genuinepartsearch.co.uk/ and type 90334860 in the part number field. It was £7.09 when I ordered mine in May, and it's now £8.87. So you might want to grab one while they're still available!

Hope this helps!

GUMBALL
27-07-18, 04:18 PM
If you need any spare parts (such as the bearing mentioned above), this may be handy for part numbers -

https://vauxhall.7zap.com/da/car/s93/l/0/9-1/

Sean

GUMBALL
27-07-18, 05:13 PM
The bearing mentioned in Conrod's post is no longer available from that company.

When seeing his post I placed an order but got a reply and refund saying they have no more.

Sean

conrod
27-07-18, 07:54 PM
That's a pity Sean - looks as though I may have grabbed the last one. :(

Bannon
01-08-18, 07:22 PM
Conrod - superb detailed info on the trouble shooting for the column, thanks for putting it up.

I'm back from holiday now and my next job is to weld in the new bracket for the rack. I'll take some pics during the job.

mylesdw
01-08-18, 08:31 PM
There's more useful info here

http://www.super7thheaven.co.uk/blog/corsa-c-electric-power-steering-epas/

(I'm gathering parts to do the same job on my Ram)

jon1d
01-08-18, 09:15 PM
What Corsa column is easiest or best column B or column C . I see people use both models with comments try and get a column B . I see that the Column C are a lot more redly available due to age and more than likely its going have less wear.

aaronjb
02-08-18, 09:41 AM
The bearing mentioned in Conrod's post is no longer available from that company.

When seeing his post I placed an order but got a reply and refund saying they have no more.

Sean

Available on eBay from the US - also used on other GM models; seems a shame to have to ship something like that in from the US, but it's the same way with a lot of older Vauxhall parts now (I used to have an Omega, and parts are getting scarce in the UK, but the Cadillac Catera is basically identical) :(

Probably not helped by the fact that they're now owned by Groupe PSA..

GUMBALL
02-08-18, 10:20 AM
Hi Aaron,

Yes found them too but so much more expensive!

Used on Daewoo too and found them on ebay too but need to speak Russian to understand what the website says. Not sure it would ever turn up either!

Sean

aaronjb
02-08-18, 10:41 AM
We're talking about the bearing that sits in the upper plastic shroud (released by the two white clips), right?

If so, I'll try and measure mine - there must be a standard bearing equivalent, somewhere.. it's not like GM make these things for themselves :)

GUMBALL
02-08-18, 11:13 AM
Believe so Aaron

Number 11 on here -

https://vauxhall.7zap.com/da/car/s93/l/0/9-1/

Sean

conrod
02-08-18, 11:16 AM
Yes Aaron, that's the one. It's two bearings crimped inside a copper housing to form a single assembly - not something I had personally seen before.

I'm pretty sure my bearing was OK when I pulled the original steering wheel with the special GM puller. But after fitting my column and Momo hub/steering wheel, despite looking straight the wheel needed to be realigned after I actually drove the car. Despite only tightening the nut slightly, the hub was on solid. After wrenching and tugging the wheel for a while, I eventually had to buy a suitable sized puller to remove it. I suspect it was the attempted "brute force" wheel removal that introduced play in the bearing ......

GUMBALL
02-08-18, 11:24 AM
There "appears" to be stock here but I can't get through their checkout process to see if they can deliver.

http://ar-demo.tradesoft.pro/search.html?article=90334860&st=groups&chk_smode=on&smode=A&sort___search_results_by=final_price&term=0&live_search=1&brand=

Sean

conrod
02-08-18, 11:26 AM
What Corsa column is easiest or best column B or column C . I see people use both models with comments try and get a column B . I see that the Column C are a lot more redly available due to age and more than likely its going have less wear.

Jon,

If you have a Dax then go for a Corsa B one as Dax can supply a bracket assembly that makes fitting it to a Dax an absolute doddle.

The ECU on the Corsa B column is separate from the column and has a fairly long cable which offers a lot of flexibility in terms of where you mount it (away from interference and heat). Although the Corsa C ECU can be removed, the cable is a lot shorter. So if you have space constraints, a Corsa B one has the advantage. The problem is that many breakers (particularly on eBay) know this and are charging some pretty outrageous prices for the Bs.

I sourced my Corsa B column from Johnsons Vauxhall Breakers - the whole assembly including the column switches, ignition lock and keys and delivery cost me £80. So I suggest anyone looking for a B or C column gives Jason a call on 01207 237878. I'm pretty sure that the upper bearing and housing are common to the other (non-EPS) Corsa B (and also possibly C?) models, so they may well have a stock of used housings/bearings too. Jason's a helpful guy, so I'm sure he'd be happy to select one with minimal play.

TINKA
02-08-18, 12:28 PM
What Corsa column is easiest or best column B or column C . I see people use both models with comments try and get a column B . I see that the Column C are a lot more redly available due to age and more than likely its going have less wear.

Have a read of this (http://www.cobraclub.com/forum/showthread.php?t=58604&highlight=corsa)thread from a while back.

jon1d
02-08-18, 01:12 PM
Thanks Martin and Alan . Lot of good info . Looks like a winter job once i have all the parts .

Bannon
05-08-18, 11:37 PM
Ok - today's progress. Despite setting up my welder yesterday and testing on scrap metal to check that everything was fine, welding the rack mounting bracket to the chassis was still a bit troublesome. It's done, and I'm satisfied that it's sound - but it's just not quite as cosmetically tidy as I wanted it to be. But I took my time and made sure the conditions were as good as they could be. It is ON.
With that done, the area got two coats of paint, along with the new engine-ground-point, and I removed the driver's seat and sub-frames, made a small modification (welded the seat-mounting-nuts to the subframes) and removed the old Dolomite column.
I had to de-pin the wiper-switch assembly to remove it from the column, but it was easily done and re-pinned immediately afterwards.
That's it for today.
Pics...

http://www.cobraclub.com/forum/attachment.php?attachmentid=36280&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36281&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36282&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36283&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36284&stc=1

Bannon
06-08-18, 11:10 PM
You can plan a modification in theory as much as you like - but sometimes you need to physically install components to get some 'real-time' datums.
Today, I fitted the rack, EPAS column, joints and shafts (all loosely) to see what fell where. On the whole, looks ok. I'll need to move the exit point of the column through the footwell wall by 1/2" - 3/4" downwards to clear the exhaust manifold. Not a massive issue, I'll work on that tomorrow.
More significant is the switch gear. My car has the speedo and tacho (5" dia.) either side of the column. NO CHANCE. I've checked out all options and there is simply not room for the switches and plugs with the gauges in their present position. Therefore - whether I'm keeping the Dolomite switches or fitting the Ford switches....either way, my lovely dash - sadly, needs surgery.
Of course, all of this dashboard re-arranging is secondary to the geometry of the steering - so more of that later - but it will be the Ford switches that I will use, as keeping the Dolomite gear is just as much work, therefore not really worth bothering with as they are older and more fragile.
I need to eat life-saving deep-pan pizza now, but photos of today's work will follow. - Glenn.

Bannon
06-08-18, 11:25 PM
http://www.cobraclub.com/forum/attachment.php?attachmentid=36285&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36286&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36287&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36288&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36289&stc=1

Bannon
06-08-18, 11:31 PM
http://www.cobraclub.com/forum/attachment.php?attachmentid=36290&stc=1 So, the pics hopefully show why I will have to cut the dash to give clearance for the switch plugs. Also, should show how the column shaft is touching the exhaust manifold and will need to be re-positioned.

jon1d
07-08-18, 01:20 PM
I see your making good progress and as you say all the theory sounds good but you can only see how things run with a trial fitting . I also have the old Triumph Dolomite column .

Interesting how you get on re-wiring the switch gear going to the Ford switches. Is the horn on the stalk ? Is your Column the adjustable Corsa B also any part number on which one your using ?

Been doing a lot of reading on the control side and the inputs required for the Computer . Some comments on the speed controller of the cpu that the steering can get light at speed. The speed can be is taken off ABS sensor but we don't have ABS so there are after market speed sensors .

Would it be easier to rerun the exhaust pipe and leave the steering nice and straight ?

Bannon
07-08-18, 02:44 PM
Hi Jon,
I've already identified which pins go to which functions on the Ford switches, which are actually Fiesta Mk2. I went for these specifically because I wanted to keep the horn on the stalk and the Sierra one doesn't have that feature.
The module I will be using to control the EPAS comes with a potentiometer, so I will be controlling the level of assistance manually.
As for the steering - I have moved the footwell bearing down a little bit and everything is clear now. It's not a big issue, as there is a u/j on the end of the EPAS unit so the small adjustment I made was 'absorbed' by that joint.

Still a lot of work to be done though. Pics later...

jon1d
07-08-18, 06:46 PM
Great feedback . I will have to go the same route with the Fiesta MK2 . Any wiring would be helpful or photos cheers This post has been a great help .

aaronjb
08-08-18, 02:52 AM
Have you considered going for an "original" VW Beetle/Karmann Ghia stalk? You'd only have indicators and a pull switch available, but it's quite a bit smaller in footprint than the Sierra stalks, and fits right on (almost) the Corsa column. Might mean you don't have to perform open-dash surgery..

Bannon
08-08-18, 06:19 PM
Thanks Jon - glad to be of use.
I did consider the VW switch option, but not enough functions for it to be worthwhile for me. Thanks for the tip though.
Today, I modified the steering wheel boss, which was far, far too deep for the car. The height of the steel section of the boss is a massive 71mm. I needed to remove 64mm from it to get the wheel where it needs to be. So, I cut and shut it, very pleased with the result.
In addition, I have an alloy centre cap which didn't quite fit my previous boss, so I painstakingly filed down the edge which retained the O-ring and binned the O-ring to get it in the hole. This was fine, but how would I retain it? I used a small, high-powered magnet screwed to the back of the cap, spaced so it was just clear of the steering column nut. Perfect!
Now, with my new column, I needed to mount the magnet flush in the back of the cap. I wasn't looking forward to this, but it went very well. Fortunately, this alloy is is extremely soft so I drilled out as much as possible and then used a rotary file to tidy it up. I decided to 'pot' it in, using fibreglass resin. It's important to let it set completely (a week or so) to allow it to become completely hard, away from any ferrous metals. These magnets are strong, and the resin might move if not fully set.
Pics...

http://www.cobraclub.com/forum/attachment.php?attachmentid=36293&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36294&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36295&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36296&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36297&stc=1

Happy Jim
08-08-18, 11:27 PM
That’s designed to crush in a frontal crunch to stop the wheel puncturing a hole in your chest, hope you have some other form of collapsible mechanism somewhere else.

Rgds

Jim

Bannon
09-08-18, 12:50 AM
That’s designed to crush in a frontal crunch to stop the wheel puncturing a hole in your chest, hope you have some other form of collapsible mechanism somewhere else.

Rgds

Jim

My '56 Morris Minor was similarly equipped. You drive what you choose to drive.

conrod
09-08-18, 06:42 AM
I thought of doing the same thing to my boss, but decided to leave it as it was for the reason you stated Jim. However, the Corsa B column does have a collapsible section inside - which can lead to head scratching getting the hub to fit if the column has already partially slid down internally!

But, of course, if safety were your main concern a Cobra would certainly not be your vehicle of choice - so as Bannon said it's the owner's choice and decision.

jon1d
09-08-18, 07:54 AM
It might be a collapsible section but what safety would it give going into your chest also reducing the length by 2-3 inches allows extra distance from you to the streering wheel . You have the main collapsible section in the engine bay with .uj joints . Also we don't have airbags .

Bannon
10-08-18, 12:17 AM
http://www.cobraclub.com/forum/attachment.php?attachmentid=36319&stc=1My last word on this boss safety issue: Range Rovers are available.

Today, I have been mostly ransacking my garage (and my dad's by phone) in the hunt for a suitable indicator-cancelling mechanism. The DAX build manual assumes I already have the Sierra installation, including the indicator parts, and a DAX supplied boss.
I've sorted the boss - and today, having found NOTHING suitable for the cancelling device - I set about making one from scratch.
I found a steel washer. I found some flat steel bar from an old Halfords foot-pump. I started making...
It isn't finished yet, but I'll show you what I've made so far.

Also pictured is the foot well bearing in its new position - I will be making a cover plate to finish.
http://www.cobraclub.com/forum/attachment.php?attachmentid=36315&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36316&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36317&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36318&stc=1

corn plaster
10-08-18, 02:05 PM
Sierra self cancel part is available on eBay. 5 listed at present.

Andy

Bannon
10-08-18, 07:01 PM
Thanks, but I've finished mine already and it's a lovely bit of kit. Works like a dream. I also finished the footwell bearing cover plate today, then revisited the dashboard dilemma. By removing a 1.5" section of the dash, next to the speedo, I can fit the plug to the indicator switch. Not so easy for the wiper switch though. So - I decided to discard the wiper stalks in favour of a dash-mounted wash/wipe switch instead, this means I need not completely reconfigure my dashboard after all. Very happy about that.

My personal view is that the plastic column cowlings that the donor vehicles provide are not particularly pretty - my car had a very nice, handmade cowling, which sadly doesn't fit any longer. So - my idea is to make a soft, 'gearshift-gaiter' style boot instead. We'll see how it turns out.
Next job though, is to make a start on the EPAS wiring. Photos...(with one gratuitous pic of the patient) 8)

http://www.cobraclub.com/forum/attachment.php?attachmentid=36337&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36338&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36339&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36340&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36341&stc=1

Bannon
19-08-18, 02:59 PM
Work and other commitments are currently taking priority over the steering mod, hence the lack of posts - but the mechanical phase of the installation is mostly done now, later on I'll go around it replacing plain nuts with nylocs, check-tightening everything and fit the support leg between the EPAS unit and the footwell. This leg is supposedly to prevent the unit from rotating around the scuttle hoop on its U-bolts, but I'm not sure it's essential - others have omitted it from their installation in the past.
Next phase of the mod is the wiring in of the EPAS and also the various existing functions such as the column stalk and new wiper switch, etc. I have everything I need here now, so I'll report back when things get under way again. :)

Bannon
20-09-18, 03:00 PM
Fitting the Corsa ECU.
I chose to mount the ECU on the underside of the driver's footwell roof. This is clad in aluminium on top though, so I couldn't drill through without making holes in the cladding and having to move the loom and fuses. Blind fasteners were not really an option either. So this is what I did.
I found a neat alloy cradle by Motatec online, made specially for the Corsa ECU. I bought some M5 'tee' nuts, which have a flat platform and small barbs to push into a wooden surface. I tweaked the barbs to become hooks, the idea being that when I glassfibre them into place, the glass will have a really good hold on them. It worked.
I scuffed up the footwell roof for a good key, fitted the nuts to the cradle with some nice dome heads, mixed the glassfibre (P40) and made a small 'meringue nest' on each nut. positioned the cradle and supported it whilst the resin cured, then unscrewed the cradle and did a little more glassing round the nuts.
Added a lick of paint and now when I'm ready I just screw the cradle into my now captive nuts. Messy but a great result.
Pics below:

http://www.cobraclub.com/forum/attachment.php?attachmentid=36531&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36532&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36533&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36534&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36535&stc=1

Bannon
20-09-18, 03:11 PM
Apologies for the crap pics under the dash - I just couldn't seem to get a decent one. One other job completed was running in the main power feed from the starter solenoid, through the fuse holder and into the dashboard area.
http://www.cobraclub.com/forum/attachment.php?attachmentid=36536&stc=1

Sorry it's sideways - that's the firewall. Another thing I did today was lift the car up on all four corners for easier access to the footwell - although it's still horrible! I had to move the car first though, so I put the front wheels on and dropped it down. Whilst shuffling the car around, it was immediately obvious just how much lighter the steering is already, just with the new rack! This is gonna be awesome. Looking forward to testing it next year. :cool:

aaronjb
20-09-18, 03:22 PM
Very nice bracket, that! For anyone else searching, I believe it's this one: https://www.motamec.com/motamec-alloy-mounting-bracket-holder-for-vauxhall-corsa-power-steering-ecu.html

Bannon
20-09-18, 03:27 PM
Here's a better photo of the nuts all glassed in and painted.

http://www.cobraclub.com/forum/attachment.php?attachmentid=36538&stc=1

mylesdw
20-09-18, 08:49 PM
Neat idea using tee nuts; they are so widely available. I used these bonded fasteners many years ago bighead.co.uk but really it comes to the same thing. I remember the company were funny about selling retail but would give you free samples if you asked. They gave me enough to do the car and I still have a box full.

They have a good range of interesting fasteners for anyone working with fibreglass.

Bannon
20-09-18, 09:06 PM
Yeah, I saw similar on eBay, but all from outer Mongolian tribal regions! Didn't fancy my chances of getting them this side of Christmas. Like you say, Tee nuts are cheap and east to get hold of. For a bigger quantity, BigHead.co.uk looks very useful. I'll keep it in mind, ta.

P.S. aaronjb - thanks for the link. That's the bracket I used.


Neat idea using tee nuts; they are so widely available. I used these bonded fasteners many years ago bighead.co.uk but really it comes to the same thing. I remember the company were funny about selling retail but would give you free samples if you asked. They gave me enough to do the car and I still have a box full.

They have a good range of interesting fasteners for anyone working with fibreglass.

aaronjb
21-09-18, 08:33 AM
I've used the BigHead bond-in fasteners a lot, too; they are chuffing expensive in small quantities from resellers, though! There's a lot of BigHead cable tie bases glued to my car with Wurth...

conrod
21-09-18, 09:28 AM
There's a guy on eBay who bought a large quantity of BigHead fasteners in various sizes and is selling his surplus in smaller quantities. Here's one of his listings:

https://www.ebay.co.uk/itm/Special-Offer-M6-x-20-Big-Head-Male-Threaded-Fibreglass-Bonding-Stud-Qty-5-/263945119468?oid=401579467226

(https://www.ebay.co.uk/itm/Special-Offer-M6-x-20-Big-Head-Male-Threaded-Fibreglass-Bonding-Stud-Qty-5-/263945119468?oid=401579467226)He has other sizes and quantities available, so check his other listings. I can vouch for this seller as I ordered some from him last month.

Bannon
09-10-18, 12:39 AM
Thanks for the info on the fasteners guys - good info indeed.

Right - since last time, I've managed to find time to finish th electrical installation of the EPAS. This doesn't include the rewiring of the stalks, etc. - just the power steering side of things. With limited time available, I would much rather spend a spare hour in the garage staring into space, planning; solving; strategizing, etc., than trying to get something done in a hurry. This mindset almost guarantees a quality and successful result.
Which brings me on to my recent triumph: With all the wiring done on the EPAS except for the +12v and earth leads for the 'satellite' ECU left to do, I made a couple of flying leads to rig it up and test the system.
I powered up - and it works! No problems with it, other than I found it assisting a little more on left turns than right turns. So - a very small adjustment of the torque sensor, and the steering is perfectly balanced in both directions. In my excitement I didn't photograph this stage, but it's documented in a link supplied earlier. Thanks to whoever posted that up, it was very useful indeed.
With that completed, I've started to look at wiring in the stalk. I previously 'mapped' the pins on the new, Ford Fiesta MK2 indicator/headlamp/horn stalk, and today, used that info to start mapping the re-wire. I used a pair of flying leads to test the functions, one by one, and everything worked as it should. Next job will be to start making it permanent.

To follow, are some pics of the EPAS installation and early stalk bench-testing. I'm quite proud of how tidy it looks under there - I took a bit of time getting the wiring routing tidy.

http://www.cobraclub.com/forum/attachment.php?attachmentid=36605&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36606&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36607&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36608&stc=1

Bannon
09-10-18, 12:45 AM
http://www.cobraclub.com/forum/attachment.php?attachmentid=36609&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36610&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36611&stc=1

A bit geeky, perhaps. But I'm really enjoying this conversion! :cool:

jon1d
09-10-18, 11:02 PM
Looking all very good . Glad your finding it interesting . I have the same mind set always draw and detail things on paper first as this is then a good record for later dates if you have any rewiring or issues .You have detailed it very well . Always looking forward to your next posts

Bannon
09-10-18, 11:11 PM
Thanks Jon, once I've wired this in, I'll drop the car back onto the road and make a couple of new brake lines as I've removed a crossmember which previously carried a line. Then it's on to cosmetics, such as the column cowling, etc...


Looking all very good . Glad your finding it interesting . I have the same mind set always draw and detail things on paper first as this is then a good record for later dates if you have any rewiring or issues .You have detailed it very well . Always looking forward to your next posts

skinnymathew
10-10-18, 01:54 PM
I really like the detailed explanation and large photos in this thread. Probably worth my pointing out that the shot with the pedals is a mirror image, in case people don't spot it and wonder why theirs is different.

Bannon
12-10-18, 10:49 PM
Thanks Mathew - appreciate the feedback.

Now - because I have no friends and have to do everything on my own - I've made myself a new tool to help me solder my wires together. You know what I mean - you have your iron in one hand. You have your solder in the other. You still have two loose wires to hold steady while you try to join them.
Well, here it is: SALVATION!! Behold my genius... (engaging smug mode...)

http://www.cobraclub.com/forum/attachment.php?attachmentid=36639&stc=1

Problem solved. Perfect joints every time from now on!!!


I really like the detailed explanation and large photos in this thread. Probably worth my pointing out that the shot with the pedals is a mirror image, in case people don't spot it and wonder why theirs is different.

jon1d
12-10-18, 11:00 PM
Genius at work love the idea. How we come up with work arounds . The one pet hate is when you try and tighten a nut and a bolt have one nut loose on the other side of a panel and you cannot reach both sides like the bulk heads or engine bay. Especially with nyloc nuts !

jon1d
02-11-18, 08:00 PM
Looking at the different controllers and come across this one and how it works. Was wondering if anyone has fitted or tried one out over the adjustable knob version ?

https://www.ebay.ie/itm/CORSA-B-C-POWER-STEERING-CONTROLLER-/332834540572?hash=item4d7e7c0c1c

Bannon
02-11-18, 10:42 PM
That looks good. Whether you choose that unit or the adjustable one that I fitted, I think it comes down to personal preference. The one-minute 'boost' button seems like a cool idea.

Bannon
01-12-18, 09:17 AM
It's been a while since my last update - I don't have much to say, as time has been very limited. I have made a new brake line to run across the chassis, I have to make another short one to finish off the re-routing and then bleed the system.
However, I've also decided to move my gearstick forwards. It's a bit too far back, although it honestly didn't bother me as I was far too preoccupied with wrestling the steering wheel to keep the car on the right side of the road or out of the kerb. In a recent conversation with the original builder of the car, he again expressed his regret that he didn't move the stick at the time of building it. This further motivated me to look at it while I'm off the road and the car is apart already.
So - an email to Hawk Cars got me a modified remote casting and short coupling, with a 6.5" section removed. By my calculations, this means I'll need to straighten my gearstick a bit to avoid punching the dashboard in 1st, 3rd and 5th and reverse.
Anyway, the plan is to remove just enough of the tunnel to remove the old remote, and install and adjust the new, shortened one.
In the photo, the red line will be my first cut; if I need to remove more, I will. Once the install is done, I'll fit the stick and work out how much to straighten it up, then a quick cut, tweak and welding op to finish. With that done, I'll make an alloy top cover which will attach to the tunnel using rivnuts and stainless machine screws. No crappy self-tappers for this job. Same method to attach the escutcheon plate to the top cover, and then a replacement carpet panel to finish off.
Progress so far...
http://www.cobraclub.com/forum/attachment.php?attachmentid=36841&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36842&stc=1

jon1d
03-12-18, 05:59 PM
I have finally bitten the bullet and started collecting parts for the Corsa EPAS project

So far acquired the Corsa B EPAS but I need the

1.steering wheel nut
2 spring
3. Washer TOP column.
36847

I have been looking at using my Motolita steering wheel (9 bolt 101PCD) and an adapter to Corsa B.

1. Option Dax adapter at £135 ouch
2. Convert plate from six hole to 9 hole Motolte steering wheel and then Cosa B spline to 6 hole Moto or Mountney .

The key is the distance and I want to keep the steering wheel in the same location as on my Triumph Dolomite column. Without having the parts it will be trial and error and could end up with a lot of unused parts .
The Dax option would be fixed .

Indicators
1. Keep original Triumph or go new . The Corsa b has a mount on the column but not worked out how this works yet .
2.Some have used VW Karm Ghia indictors .

CPU Controller
Now this is right up my street working in electronics for many years.
1. Speed controller design using Ardunio controller and feed from prop shaft to vary assist with speed
2. Another design Speed controller and prop sensor
3. Off the shelf variable or timer option

.Any hints or point


1.

KugaWestie
03-12-18, 09:52 PM
jon1d, I am trying to send you a pm but your inbox is full

mylesdw
04-12-18, 02:42 AM
Not sure if Arduino has pulse counting as standard whereas others might. Not hard to add but worth considering.

jon1d
04-12-18, 12:16 PM
jon1d, I am trying to send you a pm but your inbox is full

Hi Deleted lots out of mail box so please try again.

jon1d
04-12-18, 12:22 PM
Not sure if Arduino has pulse counting as standard whereas others might. Not hard to add but worth considering.

Thanks Myles ,

I have not got into the detail of Arduino . I know it can easily be connected to proximity detector . I might have a problem using prop shaft as most are fed off ABS front disc sends a lot of pulses per revolution as the prop shaft would develop only one to four pulses per/rev . I have a spare Arduino knocking about and they are nice and easy to use inputs and outputs to drive the Corsa CPU .

Bannon
04-12-18, 12:42 PM
The Dax fitting kit for the column will include a new spring. You are instructed NOT to the the Corsa spring. I guess it's a different rate. Nut and tab washer - I'd start emailing eBay sellers to see if they can flog you a pair. Or visit a breaker and I'm sure a similar Vauxhall would have a suitable nut/washer.

Steering boss: The one that I made has placed the steering wheel very slightly further away from me (1/2" maybe?) than it was on the Dolomite column. The Dax column mount has a good amount of fore/aft adjustment available also, but I've pushed the wheel away from me as far as it will go.

Stalks: It depends on your dashboard layout and hole size, and whether or not you're prepared to modify it to accommodate different stalks. With my column positioned as far away from me as possible, there was a lot less column tube protruding from the dashboard than before - making it necessary to build an extension of some kind to attach stalks whichever was chosen. This is why I just used the extension tube included in the Dax kit and sourced a MK2 Fiesta stalk. The extension tube works a treat. Hope this helps.


I have finally bitten the bullet and started collecting parts for the Corsa EPAS project

So far acquired the Corsa B EPAS but I need the

1.steering wheel nut
2 spring
3. Washer TOP column.
http://www.cobraclub.com/forum/attachment.php?attachmentid=36847&stc=1

I have been looking at using my Motolita steering wheel (9 bolt 101PCD) and an adapter to Corsa B.

1. Option Dax adapter at £135 ouch
2. Convert plate from six hole to 9 hole Motolte steering wheel and then Cosa B spline to 6 hole Moto or Mountney .

The key is the distance and I want to keep the steering wheel in the same location as on my Triumph Dolomite column. Without having the parts it will be trial and error and could end up with a lot of unused parts .
The Dax option would be fixed .

Indicators
1. Keep original Triumph or go new . The Corsa b has a mount on the column but not worked out how this works yet .
2.Some have used VW Karm Ghia indictors .

CPU Controller
Now this is right up my street working in electronics for many years.
1. Speed controller design using Ardunio controller and feed from prop shaft to vary assist with speed
2. Another design Speed controller and prop sensor
3. Off the shelf variable or timer option

.Any hints or point


1.

jon1d
08-12-18, 04:50 PM
Hi

Getting all my parts together and pasts arriving in the post daily. I have sourced steering column top nut now and just locking washer to find thanks Bannon .

Picked up Dax Corsa B mounting kit in the week and been bolting parts together . Not sure where the long pointy mounting bar goes and attach this to? I believe this is to stabilise the column and required for IVA . Where does it go ?

I have seen it written in a discussion that the instruction are in the build manual as no instructions come with the kit.

Bannon
08-12-18, 06:32 PM
The stabiliser bar bolts onto one of the three bolts that secure the Dax bracket to the lower end of the column, the other (straight) end secures to the transmission tunnel. I haven't fitted it - but if needed for IVA, then that is where it goes.
If you contact the guys at JK, they will supply you with the instructions. You should have received some with the kit, actually - and there is some info also in the main build manual. I'm always here anyway if you have any issues mate.

jon1d
08-12-18, 07:08 PM
Cheers .

Lots of head scratching as no instructions where given. I think I have it now as its not going for IVA and I have 1992 build manual with no EPAS I am trying to work things out . Looking at your build and photos has helped a great deal on how the bracket goes on and replaces the Corsa bracket . There seems to be lots of adjustment with the U-Bolts with slotted holes so you can position the steering wheel closure or further away. I still have the Corsa key barrel and have a key so might make use of that as the steering lock works and will go for a push starter switch on the dash. Just ordered some cable and fuse 50 amp for the wiring feed. I hope to prepare and wire up as much as possible before the ripe out starts. I need to have the lower Corsa B U/J modified by Dax while I wait on my next visit. This is a slow burning project and weather is getting to cold to be in an unheated garage .

Bannon
08-12-18, 09:46 PM
Yeah, not much fun out in the garage at the moment! Something I just remembered - the U-bolts Dax supplied with the kit were slightly too small in diameter to fit over the scuttle-hoop. I used my old ones rather than fart about returning them, but do check. You may have the same issue.

jon1d
08-12-18, 11:24 PM
Good call that would be a last minute hitch as at that stage I would have every thing apart . Will get under the dash tomorrow and measure up to see if they fit as my car is an early Dax .

route66
10-12-18, 01:44 PM
Cheers .

Lots of head scratching as no instructions where given.

Jon,
See here - https://www.dropbox.com/s/qi2dhlhr9r74qum/Dax%20EPAS%20instructions.pdf?dl=0 (https://www.dropbox.com/s/qi2dhlhr9r74qum/Dax%20EPAS%20instructions.pdf?dl=0)
Scanned from my build manual.

jon1d
10-12-18, 05:57 PM
Cheers Steve

Thanks for the info great help should resolve a lot of questions. That is what makes this site great people with like minds.

Bannon
10-12-18, 08:24 PM
Good stuff - good info. I've finished the majority of the shortened remote gearshifter, just the cover plate for the tunnel and a new section of carpet to sort out. It really didn't cause me any problems to install, the only tweak necessary was to shave a small amount of material from the top of the gearbox casing above the speedo cable drive point as it was very slightly obstructing the reverse gate baulk plate.
I secured the forward end of the main spring using a penny washer with the edge bent over to create a kind of tab washer - this keeps the spring aligned centrally which prevents it from jumping off the gearstick pegs. Hopefully the pics will show this.
I straightened the gearstick a little for dashboard clearance and that's about it. Very successful!
http://www.cobraclub.com/forum/attachment.php?attachmentid=36860&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36861&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36863&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36864&stc=1

Bannon
10-12-18, 08:26 PM
http://www.cobraclub.com/forum/attachment.php?attachmentid=36865&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36866&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36867&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=36868&stc=1

mylesdw
03-02-19, 08:10 PM
Enjoying your photos and mods. A question about dismantling the Corsa column:

How do you remove the plastic shroud at the top? : the plastic moulding that includes the indicator switches, ignition key and all that. I've knocked out a steel roll pin but the whole thing still seems very well attached.

Bannon
03-02-19, 08:42 PM
Enjoying your photos and mods. A question about dismantling the Corsa column:

How do you remove the plastic shroud at the top? : the plastic moulding that includes the indicator switches, ignition key and all that. I've knocked out a steel roll pin but the whole thing still seems very well attached.

Thank you. Nearly finished the mods - just some trimming left to do really. To remove the ignition barrel, you need to drill out a fastener/bolt which clamps the two halves of the lock assembly together.
If you want to remove the plastic moulding which holds the stalks, you need to remove the two white plastic plugs, keep them safe - and then rotate the moulding anti-clockwise and pull it out. It's a bayonet type fitting. Hope this helps.

mylesdw
04-02-19, 03:16 AM
Ah! the Corsa C column (the one I have) must be quite different since none of the things you mentioned were present. In the end I just sawed all the plastic off since I don't need any of it. Looks like the upper steel sleeve, upper bearing and mounts for all the switches are moulded in one piece. Good news is that in doing so I discovered that the shaft is actually in two halves and it looks like not too big a job to cut and weld the top of the old shaft to the new shaft thus matching the steering wheel splines.

Bannon
21-04-19, 08:56 PM
It's been a while since my last update. So - I've got an MoT and I'll be taxed and on the road for May. The car did feel a bit strange on the short drive to the testing station, but I knew the front wheels were toeing out. Once I'd bought my new fangled tracking equipment I discovered that they were toeing out by a massive 11.5 degrees! I've set them to 1 degree toe-in, we'll see how it feels soon enough.

Progress: The only thing left to do really, is to fabricate a cowling for the top of the column. I set off down to the housewares store in the high street this morning with a fairly open mind as to how I might tackle this job. I bought a set of pastry cutters, which being nylon, might be of use to form the hoop at the top end. Then - I found a very nifty little cake tin and instinctively knew I was on to something. So, a couple of quid poorer, I went into the garage to play...

http://www.cobraclub.com/forum/attachment.php?attachmentid=37405&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=37406&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=37407&stc=1http://www.cobraclub.com/forum/attachment.php?attachmentid=37408&stc=1

https://outlook.live.com/actions/ei?u=http%3A%2F%2Fwww.cobraclub.com%2Fforum%2Fatta chment.php%3Fattachmentid%3D37390%26stc%3D1&d=2019-04-21T19%3A52%3A30.118Zhttps://outlook.live.com/actions/ei?u=http%3A%2F%2Fwww.cobraclub.com%2Fforum%2Fatta chment.php%3Fattachmentid%3D37391%26stc%3D1&d=2019-04-21T19%3A52%3A30.121Zhttps://outlook.live.com/actions/ei?u=http%3A%2F%2Fwww.cobraclub.com%2Fforum%2Fatta chment.php%3Fattachmentid%3D37392%26stc%3D1&d=2019-04-21T19%3A52%3A30.138Zhttps://outlook.live.com/actions/ei?u=http%3A%2F%2Fwww.cobraclub.com%2Fforum%2Fatta chment.php%3Fattachmentid%3D37393%26stc%3D1&d=2019-04-21T19%3A52%3A30.152Z

CAKE TIN WINS! With a nice enamel rolled edge already in anthracite, I can lay the black leather boot right up to it for a perfect finish and finish the lower end neatly into the dash. What a result. I love being me. Updates when I do the next bit.

Bannon
20-06-19, 11:44 PM
It's been a wet, miserable testing period for myself and the Cobra. Despite this, I've swapped out the old fuel tank for a much cleaner, used example, and extracted no less than FOUR large cups-full of rust from the old tank. Cooling system seems to be fixed now also, and I've replaced the hoses that ran between the oil pump and filter housing after one of them blew off mid-sprint and puked five litres of oil back through the underside of the car before it started choking on its own valve-lifters. No harm done, and I had two new oil lines made by THINK AUTOMOTIVE while I waited in their shop for just £60. A brilliant local service. These guys were just great.
So - I've covered a few miles since fitting my EPAS steering. Verdict?
I'm planning to remove it. Don't get me wrong - it works. But it works rather too well. The available means to control it as Vauxhall intended remains elusive, rendering the steering too light - especially at higher speeds. It lacks feedback and feels unassuring. I have fitted a smaller steeering wheel but the improvement is small. I have no self-centring despite maxing out the castor angle - apparently a symptom of poorly controlled EPAS due to the crude nature of the artificial signalling supplied to the unit by the aftermarket controllers.
Good news is that swapping out the EPAS for a NON-powered Corsa B steering column is almost a straight swap, requiring only a minor modification to the DAX mounting bracket. I have found and ordered one, so that will be an easy winter install.
The Quaife rack and all the other mods, such as the upper column cowling, stalk, steering wheel boss, etc, can be retained - so it's not a complete re-work, I'm really just removing the motorised part of the system. Heavy parking, perhaps - but I'll be able to feel the car again properly - and I look forward to that.
P.S. Don't tell the wife...

jon1d
21-06-19, 12:25 AM
I wonder if the controller is working correct as and full adjustment out the EPAS should be the same as no assist. Have you take the fuse out and driven with no assist? I am at the stage of a full winter rip out now having most of the parts. I was looking at a different control module as the ones sold are very basic with the knob adjustment.There is the timer which gives you assist at a button push for 1 minute only as your parking or moving at slow speed only.

mylesdw
21-06-19, 02:01 AM
I'll repeat this link from earlier

http://www.super7thheaven.co.uk/blog...steering-epas/

The guy discusses at length the shortfalls and crudity of eBay controllers and how to gain a 'real' speed signal not to mention how to scale it to match the EPAS.

mylesdw
21-06-19, 04:03 AM
Link that works

http://www.super7thheaven.co.uk/corsa-c-electric-power-steering-epas/

Bannon
21-06-19, 12:03 PM
Yeah, I was reading that last night. But my steering is already set to minimum assist and even that is too light. There's no known way to further reduce the assistance level. I'll keep my EPAS column for possible refit in the future and I'll leave all the wiring and ECUs in place so it can be easily put back if I ever fancy trying it again.

route66
21-06-19, 12:13 PM
I use a Phil Ringwood (ExtraEFI) supplied 3 step speed sensing controller with my Corsa B EPAS and find it to be very good. The car still has plenty of feel at speed.
However, I don't think Phil is building / marketing these units any more. The 'control knob' units on eBay are just a potentiometer and are rubbish.

peter v12 cobra
21-06-19, 01:31 PM
Hi
Just out of interest whats the spring for on the center shaft ?
Peter

conrod
21-06-19, 02:07 PM
They're being sold under the EasySteer name:

http://simonebirchall.co.uk/controllers/speed-sensitive.html

I fitted one of these to my Corsa B column, and it works very well. The good thing is that it has two modes of operation - either high, medium and low assistance, or medium , low and off.

I agree that, even with the power assist switched off, the self centering isn't as good as it was with my Sierra column, but that's a small price to pay for the benefit of power steering. I suspect this is to do with the indirect inteface between the input and output shafts inside the column.

To guard against malfuntioning of the control unit (the torque/position sensors can wear and play up) I took the precaution of installing a rocker switch in the dash to disable the power steering should it start behaving erratically.






I use a Phil Ringwood (ExtraEFI) supplied 3 step speed sensing controller with my Corsa B EPAS and find it to be very good. The car still has plenty of feel at speed.
However, I don't think Phil is building / marketing these units any more. The 'control knob' units on eBay are just a potentiometer and are rubbish.

route66
21-06-19, 02:57 PM
They're being sold under the EasySteer name:

http://simonebirchall.co.uk/controllers/speed-sensitive.html



That's the one. Good to see it's still available. A good bit of kit.

aaronjb
24-06-19, 02:57 PM
That's the one. Good to see it's still available. A good bit of kit.

Have the same box of tricks here - the only bad thing about it (I can't say what it's like to drive with yet) is that the box is so huge! :)

jon1d
24-06-19, 07:06 PM
Looks like 5 x 3 1/2 so about the size of the ECU ?

I heard the same about the steering not feeling as good at speed with the Corsa EPAS .

Also the column has to be fully weather proofed cowling cover as any water into the steering column control unit can cause the steering to have a mind of its own and go to full lock! The conversation was with someone who jet washed his car and the steering went to full lock as water had entered into the steering column. He as jet washing the interior though .

Bannon
27-06-19, 08:57 PM
Introducing (probably) the world's first de-modded, Corsa B, NON-EPAS steering equipped Dax Cobra! Yes, I've done it. It only took me a couple of hours to remove the EPAS upper column, swap the Dax mounting bracket, swap the plastic top bearing housing over and bolt it in. Much better. The EPAS only improves parking. Once on the move, it simply removes feedback. If you switch it off, you then feel the motor and gearbox dragging behind.
I'm much happier with heavier parking but live steering. And SO easy to fit. If you are even considering this de-mod, start looking for a non-EPAS column now - because they don't come up often.
I've removed it again and made an easy mod to the lower mount and bolted it to the Dax bracket. Just need to fit it back in tomorrow and that's it.
Some photos...

37715

37716

37717

corn plaster
27-06-19, 10:31 PM
Good luck with the removal of the EPAS from a Dax EPAS equipped owner. 9 years without, 3 years with and it's not being removed. Everyone is different.

Andy