on a ts1 225, building another engine , have a 58 mm indian webs with uprated bearing and rod, or maybe a mec 60mm.
Bear in mind i'm looking at a tourer type engine, running gp 200 gearbox on 4.8 ratio and jl3 with a vhsh 30mm delly flatslide and sil flywheel lightened to around 2kg.
Cheers Baz
60mm seems the choice of some but i say go for that extra cc and TORQUE and get a 62mm,
plenty of them out there, replay scooters, Jb, Mb they all have them
TS1 and PX stay in the garage (future barn finds) out on the GTS 300 when I go out on a scooter.
I know I’ll get there and back