[old$parts]

After searching for some info regarding the yamaha 2UR-GSE and its exploits, the IS-F can actually hit 205 mph up another 35 from its limited 170 mph which incidentally is far and away best in its class! I wonder what the rpms are at 170 in 8th gear?

There should bee a simple way to do the math on this question:

The rear end in the ISF has a 2.937 and the 8th gear ratio is 0.685
Now at 170 MPH what would be the rpms.

Lets just see who can come up with the right answer and how they obtained the answer.

Any real gearheads out there. Who will be the first with the correct answer?


old$parts

 

[old$parts]

Flipside909,

Congratulations you are the winner!
Great information!
Thanks for your input and diligent efforts.

old$parts

 

[old$parts]

Now how can one go about unlimiting the speed limiter. 200mph would be nice!