Electronic Tacho

[Martyn Goodwin]

All Good, got it sorted....Rule #1.... DO NOT FOLLOW INSTRUCTIONS
When I followed instructions to the letter (multiple times) outcomes were nothing like mentioned in documentation.
Installation: EASY
Setup/Calibration: IMPOSSIBLE (if you follow instructions)

Kevin

So - how should one calibrate this beast on a Comet with a magneto?

 

[vibrac]

Been running the Skitsu revcounter on B-TH twins and single racers since they came out years ago,Fitting is just a few turns on the plug lead and tape it up-perhaps the ease of fitment is due to the various "colored" types you have to chose from
http://www.scitsu.co.uk/
although its charged from a battery via a plug I have never had one run down even at 3 day meetings my only complaint is that the rubber mounts perish but like most black rubber nowadays its c**p compared to 30 years ago

 

[Chris Launders]

I used to have a BSA with a KROBER rev counter on it which was coupled to the magneto cut-out wire, it was adjustable for the number of cylinders, would this one do the same.
Chris.

 

[redbloke1956]

Dear Kevin,
Perhaps you could tell us what your difficulty was with the instructions and share your successful solution. This forum is a good place to share good information.

Hi Eddy, I did a lot of fiddling and cannot remember exactly what gave me the correct reading but I have all intentions of pulling all wiring apart again and redoing everything in the next couple of days.
I will document the lot and pass it on ASAP, would have done it by now except that I took the Comet on it's first LONG shakedown run on Sunday.
During the run with a few hundred other bikes (well...Harleys mostly) one of the rear guard stays snapped (made by one of the previous owners? out of Yoghurt) and this caused a catastrophic annihilation of my brand new F148 Rear Guard Blade, which fell against the tyre, shorted some wiring ......Blah, Blah, Blah ...Sh#t
I will say however that the Tacho performed beautifully (until power failure)
Regards
Kevin

 

[redbloke1956]

So - how should one calibrate this beast on a Comet with a magneto?

Hi Martyn, my previous post (tonite)outlines what I am up to in this regard but, Calibrate is a misnomer (used in the setup instructions) it is really just a "selection" of the number of cylinders of the engine.
This is carried out in a particular sequence by powering up the tacho and then touching the "calibrate" wire to frame a number of times to get the required selection (that was the part that didn't work properly)
More to come.

Regards
Kevin

 

[redbloke1956]

I have fitted one , 5 years ago , made by Dutch electronic specialist, electronic "smiths" rev counter fitted in an original smiths housing and it works perfect from day one.
Only the pick-up wire should be fitted in such a way that only spark from one sparkplug will be counted. Normally there is adjusting possible at the printed circuit board for fine tuning.
I am running digital smart fire 4 plug Pazon.

Regards,
van Drenth JC

Hi Van Drenth, the current device sold by VOC spares has no internal adjustment that I know of and it requires a powered sensor (pulse pick up) sold separately, to be attached to a plug wire to operate correctly.

Regards
Kevin