rev counter

[Clarkson]

Hello all, can anyone tell me who makes this rev counter in the pic??

Does not work with msd box! Its ok till 3.500rpm and then bounces all over the place!

[neil still building it]

hi dave isn't this a smiths one?
usually a little label on the back....
neil

[Clarkson]

That's what I think,but does not have a make on it.

[neil still building it]

can't you tell by the wiring on the back as they have a common style of their own don't they...and perhaps why it won't work...is it a current type with an internal loop ,not the volt trigger type you perhaps need?
NEIL

[Clarkson]

Well I was told I need a tacho adapter from msd,but need to know the make.
Worked fine with HEI dissy.

[andy l]

Hi Dave
Using MSD for Rev counter at 3500 revs needle dies but at idle is ok
MSD supply is 12 volt square wave which can cause dropout on various gauges.Reel Steel can supply conversion module, which when connected to rev counter feed wire, should stop problem. hope this helps Andy PS Reel Steel Tel 01895 440505

[Clarkson]

Originally Posted by andy l

Hi Dave
Using MSD for Rev counter at 3500 revs needle dies but at idle is ok
MSD supply is 12 volt square wave which can cause dropout on various gauges.Reel Steel can supply conversion module, which when connected to rev counter feed wire, should stop problem. hope this helps Andy PS Reel Steel Tel 01895 440505

Thanks Andy.

[hawkcobra]

I had a simillar problem with a Crane electronic ignition unit. Turns out that the electronics changes the rate of the multi spark discharge above a certain revs, funnily enough it was also around 3500 rpm. Speedy cables sorted it for me with a new module inside the rev counter itself.
Not sure if this is relavant but it might help someone.

Colin