Junior Cassette

[Elvis]

Can anybody tell me about the gear ratios on a junior cassette. My son is 11 years old.

[oldie]

Big Front chainring must be a 52 tooth or smaller - nothing bigger. The rear cassettes smallest sprocket must be an 18 tooth. In other words when  you have the chain on the biggest front chain ring and smallest sprocket at the back, roll the bike backwards making one full revolutuion of the crank. Measure from the start to end point.This must be no longer than 6.227m. This reffered to as the roll in for under 12 gearing.

 

hope this helps you

[wheelz]

U12 : 52-18

U16 : 52-16

U18 : 52-14

 

I think this is what it is. its been some time since i had these restrictions.

[scotty]

If you looking Solomons in Woodmead have some junior shimano cassettes.