REV COUNTER

Author
Discussion

THREEFISHORANGE

Original Poster:

574 posts

228 months

Tuesday 27th May 2008
quotequote all
Sometimes when the car has been running for a while the tacho seems to be reading twice what you think it's doing? Anyone experienced this before/remedies?
Thanks

RobStan

118 posts

210 months

Wednesday 28th May 2008
quotequote all
There is a man in Yorkshire who knows all about these kind of things... He has a load of wiring diagrams and also does repairs and upgrades so you can use them with elecrtonic dizzys etc... I can't remember his name, but I did find him on google.

I've spend 10 mins searching google and not finding him. So I've been of no use but some else must know who I'm talking about.

I must have the details at home, I'll look tonight.

Rob

daza

237 posts

289 months

Thursday 29th May 2008
quotequote all
When I first fitted a Zetec into my Vixen, the rev counter needed to be converted from pulse to electronic. The guys knew what they were talking about and converted my existing rev counter shell, to hold electronic internals.

I believe ETB were doing/or had done clocks for TVR at some time (I maybe wrong, but thats what I recall being told).

The rev counter has never caused a problem sice.

http://www.etbinstruments.com/index.htm

Give them a shout, they gave a quality service,, theyre the ones to go with!

Darren

millwap

19 posts

209 months

Thursday 29th May 2008
quotequote all
The guy in Yorkshire is probably "JDO Instrument Engineers" http://www.jdo10.pwp.blueyonder.co.uk/ (taken from a recent posting in the "S" forum).

RobStan

118 posts

210 months

Thursday 29th May 2008
quotequote all
thats it.. JDO!

I'm always a little late.

ATE399J

729 posts

244 months

Thursday 29th May 2008
quotequote all
I've used this lot....
http://www.speedograph-richfield.com/
and they've been good.

Phil.

Ren32

116 posts

237 months

Thursday 29th May 2008
quotequote all
Hi,

when I got my vixen on the road last year, my rev counter was doing a similar thing and was reading double (4000RPM) at about 2000RPM (not sure what had caused it or whether it had always been like it?). Anyway, it was the ford cortina type so was able to remove the back, drill a small hole in the case which lined-up with the small potentiometer on the circuit board, re-assembled and then calibrated it myself for 3500rpm against a digital RPM meter strapped on the coil.

Seems to still be accurate across the range.

Darren.

timelord

318 posts

290 months

Thursday 29th May 2008
quotequote all
Got Speedy Cables to rebuild mine to suit electronic ignition, they also reckon they can make up a temperature guage to match your sender unit to read correct temperature. Geoff

THREEFISHORANGE

Original Poster:

574 posts

228 months

Thursday 29th May 2008
quotequote all
Thanks for the info lads. Much appreciated.

Hansoplast

570 posts

167 months

Thursday 17th November 2016
quotequote all
Had forgotten that the rev counter was not working correctly.
Now the car is road legal this shortcoming appeared.

Checked wiring, earthing with no result.

Read things on PH about voltage stabilizer.

Connected one from a TR6 but no good reading.
Needle didn't go any further than 2200 rpm and stayed at that point even when engine shut down.
After some shaking the needle move to 0 rpm starting point.

Now opened the clock and found the problem.
A thin red cable hang lose and blocked the needle.

All sorted.

Sometimes you need all the time of an retiree.

Hans