Junior Class

 

Junior Class Specifications
This is for young drivers from 12 to 17 years old on unmodified mowers with
engine sizes no higher than 13hp and must be a single cylinder.
Upon the year beginning of their 12th birthday, they can start racing and upon
the year beginning of their 17th birthday they are allowed to move up to senior
classes.
This is subject to committee approval/authorisation, and parental consent,
although they are not required to and are allowed to complete the season in
junior class first.
Juniors must wear an orange bib at every event, a parent or legal guardian must
be present at all times and will be required to sign a parental consent form

Class specification:
Designed to offer an easier transition into racing for 12–17-year-olds, open to
domestic garden tractors up to 13hp.
Mowers must retain the original gearbox/trans-axle and they must remain
standard as manufactured with the following exceptions:
Pulleys in the drive system between engine and gearbox may be changed to
improve gearing.
Controls, for example pedals, may be modified or fabricated.
The driver must be able to reach and use all controls easily.
Any domestic single cylinder lawn mower engine up to 13 HP may be fitted with
no modifications.
Particular attention should be paid to the fixing of the front wheels to the axles.
These must be bolted, not split pinned.
The footplates must remain in the standard position.
Foot protection bars are compulsory.
Seat height can be lowered for safety.
Pulley sizes front = no larger than 170 rear = no smaller than 100
Mowers will need to comply with all of the basic safety features listed.
Steering:
A standard mower type front axle with standard steering must be fitted and
used.
As standard the front wheels have a positive camber and the axle pivots in the
centre, the front axle may be cut and welded to alter the wheel camber, the axle
must be welded or bolted to the chassis.
Interchanging between manufactures is allowed and can help with sourcing
replacement parts, for example Westwood front axle fitted to a Murray mower.
Any steering wheel is allowable but must be securely fitted to the standard
column.
Steering must allow the driver to control the mower in a safe manner.
Rear Axle:
The rear axle must remain fitted in its original position & bolted to the original
chassis mounting points, the only axle lowering allowed is removal of axle
spacers if fitted.
The axle must have an open differential.
Interchanging of types of standard axle is permitted to help with sourcing
replacement parts, as long as the mounting points are the same and not
modified to suit.
Brakes:
If brakes are removed from the original position on the gearbox, and fitted to
the differential there must be 1 fitted either side.