Tacho options.

[philmill]

Just a quick couple of questions, will an older FZR tacho work on a 31k, or does it need to be from a 2 cyl bike?  I'm using FZR clock housings on my Hybrid and wondered if I can just use that tacho. And which wire is the take off to run and electronic tacho??

Thanks. Phil

[philmill]

Anybody??

[midlifecrisisrd]

Sorry, saw this late last night and forgot to message this morning

The ypvs tacho does not use a pulse, it uses the pv signal so won't work I'm afraid

Also the rd's use a wasted spark so if you took a pulse signal from the coil for a 4t tacho it would show double the rpm as 2 pulses per rev instead of 1

If you have a Zeel or an ignitech fitted these have a 1 pulse per rev signal on them which could drive a 4t tacho

Steve

[philmill]

Thanks Steve, so would a TZR one work? And isn’t just a case of taking a wire from the CDI somewhere? Or I see you mention coil!

Thanks, Phil

[midlifecrisisrd]

If you want an elec tacho on an lc2 you can use an f/n/r/tzr2ma rev counter with the power taken from the temp gauge and the trigger from the signal wire from cdi to pv controller

Some later 2 strokes use a combined cdi/oh controller so signal is a pulse from the coil

Later tzr's and the 3hm1 rz250 are like this

Steve

[philmill]

Cheers Steve. I’ll keep an eye out for one, shame as I like the position of the needle on the FZR tacho. There’s a couple of TZR ones on eBay at the mo.

[midlifecrisisrd]

I likes the far needle position too

I did make one up once with an fzr face and ypvs guts

Steve