www.northernbritishbikechampionship.co.uk

NBB Pre65_Classic dirt bike_Rock Oil2017) IMG_3414

Rules

 

MAIN FRAME LOOP

 

Main frame loop to be retained as original.

 

ALLOWED ALTERATIONS

 

Additional strengthening.

 

Repositioning of oil/fuel tanks.

 

Replica frames are accepted.

 

FRONT FORKS

 

Later parts may be used internally but must appear to be original externally. No Ceriani or BSA 4-Stud fixing will be allowed,

 

BSA 2-stud is acceptable

 

YOKES

 

Only British or British replica yokes can be used.

 

HUBS

 

Hubs must be of pre 65 pattern

 

WHEELS

 

No Tubeless Rims allowed

 

ENGINE AND GEARBOX

 

Engine and gearbox must be original or of the same type manufactured for the appropriate class. No Twin plug heads or Reed Valves will be accepted

 

CARBURETTORS

 

Must be of British manufacture and the type originally fitted to engine ie

 

Amal mkI. concentric allowed Not mk2.

 

BRAKES

 

Front and rear brakes must be fitted and working.

 

Only hub brakes may be used (no disc brakes).

 

Any linkage for rear brake may be used i.e. rod or cable.

 

Brake shoes may be fitted with any type or make of lining.

 

Please make sure your machine is suitable for the class you have entered and it is in keeping with the spirit of the event. If you deviate from the above standard it will affect the points you gain in championship events you enter.