Hi all , i have changed the stadard dash set out for a nice mychron 4 2t setup what i need to know is where can i get an RPM pickup from ? i used to run it on a 2 stroke where i could just rap around the coil lead , there is a yellow wire that is used for the standard tacho but this did not seam to work with the mychron

Are you building a go-kart?

There nice with all the sensors the provide but ive only ever seen them used in karts before.

Anyway..

How many times are you wrapping the wire around the lead? Two strokes only need it wrapping aroudn once or twice, a 4 stroke will need it wrapping around many times to get a signal.

I take it you tried to set the RPM up too in the RPM menu

Do they even work with multi cylinder / multi coil engines though as your taking the feed from only one of the coils..

http://aim-sportline.com/download/doc/e ... EU_eng.pdf

Here is the manual, it details how to wrap the wire on 4 stroke engines.

yeah i have changed the rpm setup, i have only tried to use the yellow wire that was for the original tacho set as the bike is still not complete so i can't fully start it (has no exhaust on it atm) so though i'd just put this out there , also i asked the Au importer if i can run it on the nc30 & he said yes no probs so just a matter of trying a few things i guess

oh yeah no not building a go kart lol

The tacho wire won't work mate, give one of the coil wires a go.

Cammo wrote:The tacho wire won't work mate, give one of the coil wires a go.

ok cheer cammo will do mate

Hi cammo is there any particular cylinder that is best to use ? 1, 2, 3 or 4 ?

Hopefully they'll all be running at the same rpm... I guess the one that's closest will do, I presume the software on the unit can be altered to take into account the number of cylinders, although given that there's a wasted spark on each coil I guess you have to tell it a different number of cylinders or you'll be running 30K rpm? lol

Neosophist wrote: Do they even work with multi cylinder / multi coil engines though as your taking the feed from only one of the coils..

"RPM Factor: available options are x1, x2, /2, /4."

speedy231278 wrote:

Neosophist wrote: Do they even work with multi cylinder / multi coil engines though as your taking the feed from only one of the coils..

"RPM Factor: available options are x1, x2, /2, /4."

Ah yes, the NC30 is wasted spark so yes it will work on a x2 factor.

I was thinking of NC24 which has 4 separate coils and would need a x4...

Sometimes there can be some interference which f**ks up the reading so try all the Cylinder HT leads :-)