what does rpm measure??

[ah789454]

is it the srevolutions of the crank? if it is this means when your decking it the wheels are spinning at 8000 prm. that doesnt sound right.

[wynode]

Bascially the crank.

Number of revolutions per minute.

The wheels don't spin at the same speed because of the gearing.

[ah789454]

thanks wynode. cos that got me thinking

[ah789454]

so for the gear ratios, if it is 3, then for ever 3 revolution the crank turns the wheeels will turn one??