not even vaugely inthe same league of devistation as the mighty AJS suffered, but my old girl went bang on the last lap on the pre 70, sounded way rattly a few time and till it terminated in the last lap of the last race..... then stopped , no comp when i tried to restart it....
Pulled it apart the other night, looks like the ring snapped and went for a bounce around, not sure what startedit but maybe got tight in the groove and twisted.