Restrictions for Junior & Juvenile racing

Equipment restrictions

All bicycles in competition must comply with the UCI regulations as outlined in Annexure 6 of the Cycling Australia technical regulations, which are available on the Cycling Australia website www.cycling.org.au

Junior categories U/17 and below

The following equipment restrictions apply for both road and track.

  • For all events, a standard triangular frame may only be used.
  • Frames shall consist of standard tubing of dimensions no more than 80mm maximum and no less than 25mm minimum.
  • Handlebars shall be of a standard or classic style. A handlebar extension whose sole purpose is to place a rider in a structural aerodynamic position is prohibited.
  • Only high pressure detachable tyres and tubes shall be used. A detachable type tyre means that the tube is detachable from the tyre casing. The high pressure tyre shall be beaded.

Gearing for juvenile and junior cyclist

Gear restrictions apply to all junior cyclists in events conducted under Cycling Australia regulations on the road and track.

The restrictions referred to is the distance one revolution of the crank arm will propel the bicycle, this is known as the 'roll- out'.

The gear restrictions apply to each of the following member categories:

  • Junior Under 19 = 7.93 metres
  • Junior Under 17 = 6.50 metres
  • Junior Under 15 = 6.00 metres
  • Junior Under 13 = 5.50 metres
  • Junior Under 11 = 5.50 metres

To restrict the roll-out distance, blocking off access to certain cogs by the adjustment of the derailleurs or other means is permitted.

Formula to calculate roll out

Distance travelled in one crank revolution is equal to :-

number of teeth on chainwheel x Wheel circumference in mm
Number of teeth on rear freewheel cog in use x 1000.

Note: Wheel circumference can vary significantly with different tyre size and tyre pressure.