- Dec 20, 2011
That BSA motor is pretty trick with a twin plugged head and an aftermarket side cover, but with an 84mm stroke, as marked on the label for noise testing it isn't an A50.The MZs were good actually as was all of it
Two of my mates were racing in the desmo due class
The 8-13 yr old kids were amazing on their 70cc ?? race bikes
The sidecar racing was brilliant
And the scooter racing
I didn't really take many photos but there was an A50 outfit and a triumph twin outfit that I really liked
A65 and A50 stroke is common at 74mm, capacity difference is by bore only. But an A10 has an 84mm stroke. A trick back in the day with A65s was to use a Devimead 750 conversion and an A10 crank to give 840cc.
Great sidecar engine. Used in a couple of solos that went pretty well too.
Today SRM will satisfy a need for these parts.