Gearing for the Roller Derby.
As usual the maximum gear that can be used is 80 inches, i.e.20ft.10¾ inches per revolution.
The chainring / rear sprocket combinations permitted as per gear chart are :- 32 x 11, 36 x 12, 39 x 14, 45 x 15, 45 x 16,
51 x 17, 54 x 18, 57 x 19, 60 x 20.
All gears will be checked prior to the start of competition.