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View Full Version : Robert, how fast is it??



cgnw28517
17-08-01, 12:13 PM
Robert what is the maximum bhp of your engine with blower connected,and what is the maximum varified speed you have obtained from it.
The reason I ask is that in the American forum I have been following a very lengthy thread( http://www.clubcobra.com/forums/showthread.php?threadid=10206&goto=newpost.)that deals with a fella who is building a COBRA to run on the salt flats and try to reach 200mph.This is a very interesting thread
concerning just what bhp is needed (a lot) to get to 200mph with a car that has the aerodynamics of two bread vans!!.They are using some very weired and wonderful maths in their quest.So Robert how much grunt ya got and where does it get ya.

}> }> }> }>
Regards Col.

robert
17-08-01, 01:30 PM
Well, the guy on the US forum say his car will do 0 to 100mph in 4.9 seconds, don't think so some how.

Its all relative really. My engine will produce over 500hp and lb/ft torque, and theoretically could reach 200mph in 5th as the box and diff work out at 40mph per 1000 revs, however realistically wind resistance is the issue. The lift based on the aerodynamics of the car mean that the front end gets light at around 160, so anything over that you are looking at brown trousers time and a very nasty bruise.

Driving round in a circle in a tornado, with a 200mph following wind, yes. But on the queens highway, I think not.

I did get to 140 before running out if road on the old blower set-up, but again it is all relative. Speed wasn't the reson I bought the car, I bought the car because it gets to 100mph very quick and can run rings round most car on bends.

The post on the US site smacks of my one is bigger than yours.

Who wants do do more than 120 anyway, the wind around your head is very very uncomfortable.

Robert

wilf
17-08-01, 02:05 PM
140??? 140?? is that all? And you have to put up with that funny noise as well! Where's your gumption (and earplugs) Rob? That was my running in speed!

Wilf

John Tisbury
17-08-01, 05:23 PM
I get up to about 140 just backing out of the garage. :P

robert
17-08-01, 06:04 PM
Crendon Crew

There are limits, like amount of road available. now an airfield, thats a different matter, we will see.

Robert

The Whistler!

wilf
18-08-01, 12:49 PM
John - your'e just bragging about the length of your driveway agaim, aren't you???

Rob - pulled 135/140 ish down the back straight at Donnington, so airfields hold no worries for me!!

Wilf

imported_admin
18-08-01, 07:39 PM
Talking about power, torque and light front ends... Take a look at:

http://www.cobra.nu/wheelie.avi

}> / Rob

imported_admin
18-08-01, 07:48 PM
Ohh yes, I forgot that I could have made you a small preview of the movie... Something like this:

http://www.cobra.nu/Cobra_wheelie1m.jpg
Power and torque.

http://www.cobra.nu/Cobra_wheelie2m.jpg
Light front end!

http://www.cobra.nu/Cobra_wheelie3m.jpg
Brown trousers?

:7 / Rob

wilf
19-08-01, 03:45 PM
Hmmm - looks like the kind of thing that could happen only with a blown engine???


Wilf

robert
19-08-01, 07:20 PM
Whatever

Robert

The Whistler!