Re: 24 m.p.h.???
It could be a little of both and the wider tires.
I have a little formula when thinking about wheel size just a quick approximation of percentages
If you think about a wheel, say a 26"  then there are four factored to 100
so any 1 inch change in size is roughly equal to a 4 % change,
the dif between 24" and 26" is 2 inches, or roughly 8% then
so then you can expect an 8% gain then in changing from 24 to 26, (or 12% to 27"), it's like putting on a sprocket 8% larger
For sprockets:
Then, since there is (even more roughly) a three factor for the sprocket (3 x 33 teeth)
a change of a tooth is a roughly 3% difference in either direction
3 teeth makes about a 9% dif
so if you went to 26" wheel, you get 8% gain
and if you went to 36 instead of 40 teeth (4 x 3%) you get 12% gain
and so with both these things you get approx. 20% gain in top end gearing
your 24 mph now (aprrox 4 to 100) is increased 4% with every mph 20% would be 5 mph roughly, on paper, at least
Wheel width and total weight are not so quantifiable, but I've found great dif in wheel width especially
and then there is engine performance.
Last edited by Nashville Kat; 12022010 at 12:49 PM.
