Thanks Ty
Reason i was asking as i was thinking of having a go at taking the electric motor off the base and fitting it on an 18" base.
I wont ever find a catcher for it so put it on something with a catcher.
I see Reed valve there in the last pic. At 85cc with a reed valve it should have gone OK on a 16" base. The twin would have a bit of poke too.
Bob.