Sorry mate, mind expanding on that?pidjones said:Ok, think about it. The engines spin near 10 k. Do you think they want the cable spinning 40k RPM?
Yeah, it's crazy pills time. What's thrown me is that I bought a 1:4 tach from Dime City for another DOHC Honda (they list all their tachs 1:2, 1:4, 1:7 etc etc), and yet I contacted the seller of the Triumph repro tach (in the image a few posts ago) that told me it was a 4:1 ratio, and that 4:1 and 1:4 were not the same thing. He told me the tach would not work on my bike for that reason.teazer said:Are we sure that any tacho runs faster than engine speed? That makes no sense. I suspect that 1:4 means one tacho cable revolution per engine revolution and 4:1 means 4 engine revolutions per tacho revolution. The same thing.
The Jimbonaut said:Yeah, it's crazy pills time. What's thrown me is that I bought a 1:4 tach from Dime City for another DOHC Honda (they list all their tachs 1:2, 1:4, 1:7 etc etc), and yet I contacted the seller of the Triumph repro tach (in the image a few posts ago) that told me it was a 4:1 ratio, and that 4:1 and 1:4 were not the same thing. He told me the tach would not work on my bike for that reason.
WTF?
That. Then maybe I can finally answer the question pidjones keeps asking me :advCo said:I think you need to buy and test them both so we can figure this out once and for all ;D
irk miller said:Or get a Speedhut and it won't matter.
The Jimbonaut said:Thanks for the suggestion Mike, I'll look into them. Does yours have a digital display? Do all the electronic tachs have digital displays?