15-01-13, 07:44 PM
(08-10-12, 08:14 AM)Lumpy link Wrote: [quote author=anyone]those nice people at Yamaha spend ages getting the speedo to read 10- 15% high, much like most manufacturers it seems.
As for the gearing, those nice people at Yamaha have spent a lot of time and trouble getting things right so unless you are using it as a stunt bike then personally i wouldn't bother touching it!
Remember, these bikes are ALL made to a compromise, for joe average, for many reasons as well as emissions regs and performance. There is no good reason to tailor a bike to suit YOUR requirements, if average is okay then avarage is good for you. I have changed my gearing to make it rev less at motorway speeds and above as the standard gearing feels as if you are in 5th or 4th all the time. 8k at 100mph now. Reaps 60mpg ridden hardish. Acceleration is still very good. I have also gone up 10mm on the front tyre to give a bigger footprint and NOT ot run off the edge of the tyre at the front. I also went to the 2002 type fairing as the lights were better. Did My Mitsui spend all that time making awful headlamps on the Mk1 that were fit for use? COmpromised suspension very budget, and so on. Many things can be improved on but on the other side there are many ways to screw it up. If you don't know what you are doing, LEAVE IT ALONE.
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I agree with Lumpy, Yamaha just put a 600 engine inside a 400cc bike. They changed almost nothing else. The only engineeing it took was modifying the engine to squeeze it inside the frame.
I put a 14t sprocket but a larger diameter 170 tire too, so the gearing is just a bit lower than stock. What I do not understand is how Lumpy had to go with a 16t to have 100mph at 8000. That was what my bike did with the stock gearing and tyre (160km/h).
