27 October 10. New Gearbox and stuff
The Comet engine's maximum revs are lower than the 650cc BSA so the bike could do with slightly longer legs. I made some enquiries with a company called Nova Racing who offer a 5 speed gear cluster with a choice of ratios but none higher than the 4 speed's 4th gear. The engine is not short of torque and I won't be thrashing around a track on it so I'll pass on the 5 speed for now.