That is Marnix's ex 73 Bol d'Or machine.
You’re right Paul…and a load of other bits: very different camshaft, 7mm valves, tiny rockers on needle bearings, all aluminium head, unique prototype crank webs, pistons, unique C/R gearbox, hybrid frame combining aspects of the high drum and low disc brake frames, magnesium front hub with prototype Brembo discs, prototype rear pump etc etc, the list goes on and on..
12 mm main studs, different head machining to accommodate shorter rockers, different valve angle,
7mm valves probably
Single row cam chain isn't a big problem, H profile rods 1mm thick.
Cycle parts is simple, standard drum SFC frame with an add on for the rear master cylinder. 3 SFC rear discs might prove more elusive nowadays.
A lot of work.
Paul
Forks and wheels from an early Gixxer, Jim? Larry Strung used to do this conversion - on his SFC racer and his wife's SF2 (from memory). We used to be in touch via letter! I bought his original Mg SFC hub, rear disc and several sprockets.
Marnix also has Larry's SFC. One is therefore one of the many fake SFCs around.He sent me a pic of his wife's bike - looked stock save the forks, wheels and I think rear swingarm (converted to box - also for early Gixxer i think).
When i bought his rear hub he also offered me the SFC swingarm but i didn't need it. Wolfgang now has Larry's SFC so he knows it came with bits missing (or converted!). I enjoyed his forays into rivet counter sacrilege in the interests of improving the breed - a man after my own heart
Could easily be my mistake ... whoever has it, we've chatted about it on here or via a PM. I plead old age memory loss.
