Regulations:

■ All machines must comply with AMCA, organising club and Greeves Series rules.

■ All machines must have original Greeves frames.

■ All machines must have appropriate or period hubs, forks and engines.

■ Period hybrids such as Tri/Greeves and NSU/Greeves are acceptable, with no loss of bonus points. For others please check to save disappointment.

■ Electronic ignition and non-standard clutches are acceptable.

■ Cylinders must conform externally to the original dimensions as outlined in AMCA rules. ■ New cylinders must be cast with the original port design.

■ Starmaker engines Mk1 only, wide fin. No Stormer engines.