R.P.M gauge

[Anonymous]

hey yall...my bike didnt come with a speedo and then i misplaced the r.p.m gauge i am wondering instead of finding another gauge and fitting the cable and all that if i had a tach of any size and it was electric how could i use that in my bike?

[kz]

I use a Sigma 800C as speedo, has both mph/km/h, max speed 299 km/h

clock, distance and some more features, i think there has been earlier posts on how to mount bike computers. Costs approx. US$ 15.



For the tacho it is just to connect the wires to the coils, be sure the tacho can handle the GS signals, firing every turn.

[Anonymous]

That looks cool...thanks, just one more question tho......would a electric tach need a positive to activate it and then the grounds from both coils or does it depend?

[kz]

That looks cool...thanks, just one more question tho......would a electric tach need a positive to activate it and then the grounds from both coils or does it depend?

Normally you need +, you can see the diagram for my GS1150 and check.

http://karl.zellner.com/gsx1100e%20ritning.jpg

[Anonymous]

ohh ic what u mean now...it will need a positive and probably also a ground from a coil...since it sparks every revolution even tho its a 4-stroke by getting a ground signal every revolution it can determine how many rpms a minute

[kz]

This gauge could also be an alternative http://www.acewell-meter.com/pro4.asp?id1=10