So you don't believe my bike ran better when hotter?
I did not say that. I only assumed, that you as a almost all of the time riding in circles guy, are knowing about the little differences, that can reduce or rise highspeed on straightlines, better.
Or did you do the 'run' to redline in 6. and 14T on a dyno? At 20 and 40 degree centigrade?
And if not, which racetrack has part of the eyre highway included, to get to redline in 6. with the CBR250?
Or was it a downhill section of some public road in WA?
Anyway, we talking about which difference, in the speed?
171/2 to 168/9ish, maybe?
Was me owning it for over 2 yrs, knew my bike better than most would ever hope to.
Good for you. Good for your bike
20-30 Fahrenheit is far away from the 20-40 degree centigrade, we have in the ring, here.
Or is your bike driving better @ 104, as it is @ 68 degree Fahrenheit?
The 'thing' with the torque is:
You create the torque with the right hand.
The rpm is only giving you a max possible torque option, if throttle is in 'full'.
And because you can't drive constant rpms in the middle of the band with a full open throttle, your driving in 50/80% torque won't be possible. Without using the brakes!
Maybe we talking about different things here. But in case, you wanna drive in 50 or 80% max. torque area, you can do so in every gear.
But you can do that for a long time only, if you drive in a gear, where 50 or 80% torque is partial load.
I would say, ~6-7k rpm is about the strongest option, to save fuel. With any sprocket, I think. Only the 15 could be in need for a bit more throttle (torque), to stay on 6-7k in 6, as the 14T.