That number in invalid, but then never ever something goes wrong with the magneto chain, so why alter it?? if they would do a conversion with the primary chain, and the dynamo chain.i might be interested (somewhat)
Cheers,
Lex
email (option): welbike@welbiXX.net (think about it!!)
never had any probs with magneto chain on ajs/match singles, however i have done away with dynamo,blanking off hole in chaincase and fitting 12v burglar alarm 2.8 amp hr battery and changing bulbs to LED and so far completed 160 miles with headlamps on full beam and still the battery has,nt gone flat! plus it gives me an extra 1hp!!!