Larger rear sprocket.

[ferraiolo1]

Yes, but it’s incorrect

 

[Max Kool]

Sorry bud, you’re wrong. Do the math please.

 

[Timps27]

Yeah, not sure where you’re getting that. Even if you calculate the system change going from 16:49 to 16:47 is a 4.25% change and to 17:49 is a 6.25% change.

 

[motocroft]

Interesting read.

V-twins can certainly benefit from a ratio change to even out lumpy characteristics or flat spots that's that's sure. I had done a 15T counter-shaft sprocket on the Aprilia for this very reason.

Question. Is the speed calculated from gearbox rpm or wheel sensors on the FTR? I haven't looked. Any speed readout issues with ratio change?

 

[ferraiolo1]

Speed is taken off the front and rear abs ring. Only thing that changes the speedo would be a overall tire diameter change

 

[motocroft]

Ch

Speed is taken off the front and rear abs ring. Only thing that changes the speedo would be a overall tire diameter change

Cheers fella.