Tuesday, January 19, 2010

2010 rule book and JR gearing

From our local top official we have our USA cycling 2010 rule book here.

Specifically for the JR - The 2010 rules for Junior Gears can be found on pages 53-54




This is track specific ratios by age.

Also Nick G. noticed that probikekit.com sells ultegra 10sp cassettes in 14x25, 15x25, and 16x27 for $89 (January 2010).

Roll out process - is discussed here rules as of 2007 "Blocked gears".

1M6. Junior Gears. The maximum chaingear ratio for Junior riders is based on age and discipline. Blocked gears will be allowed, except in National Championships. All tests for compliance shall be done using the "roll-out method.” There is no restriction for cyclocross or MTB races. For road and track the limits
Road
17-18: 7.93 meters (26‟)(52x14)
15-16: “
13-14: “
10-12: “
Track
17-18: Unrestricted
15-16: 6.78 meters (22'3")(48x15)
13-14: 6.36 meters (20'10.5")(48x16)
10-12: 6.00 meters (19‟8”)(48x17)
The gear limit for a rider is determined by the age of the rider and the discipline, and applies in all events in that discipline subject to the notes shown below:
(1) For Juniors 16 and under who are competing in Championship team sprint, team pursuit, keirin, or Madison the 17-18 (unrestricted) gear limit applies.
Note that the gear combinations listed are merely suggestions – the distance rolled out is the governing standard.

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