is there an easy way to work out number of teeth on front &rear sprockets needed for a given wheel & tyre size,

Just use the chart on this website

http://www.afamusa.com/gear-ratio.html

Ooops - pressed submit too soon.

Once you know the ratio you want, you can use the calculator here http://www.locostbuilders.co.uk/~mk9r/ to determine your speeds according to any wheel/tire size.


Steve

[Edited on 4/17/05 by sgraber]

what it soow difficult in

saying Engine = 10 Wheel = 50

Soow RPM is going down with factor 50/10 = 5??

i always go to the Cycle example??

if you change to bigger in the back then you have more force but less speed...

soow rpm is diveded.... else it is multiplicated...

TKS