I’d be most interested to know whether any forum members have experienced issues with rear wheel spoke breakage when running horizontal single cylinder Aermacchis on the Mountain Course?

Hello BSA, just sent you a PM.

Good Morning BSA, I raced an Aermacchi on the Isle of Man for four years and never had a problem with rear wheel spokes breaking or coming loose. Your thread intrigues me!!!

Rear wheel problems are not unheard of. My friend had a 350 Aermacchi which use to loosen the rear wheel bearings in the hub which meant a loctite bearing fit job every day. The 250 rear hub cracked nearly all the way around between the spoke holes. I think the 250 broke down with an ignition problem around about the 11th......