Newly registered to the forum, figured I'd stop in and say hello.
I recently inherited a 75 750F and I ran into this corner of the web looking for info about it.
This was my father in law's bike. He passed away in '92 and it sat in the top of my brother in law's barn since. He gave it to me after deciding he'd never ride it again, and would rather see someone have it that would get some use out of it. I'm working on restoring it now. (I told my wife I'd do my best to make this bike like it was when her dad bought it new.) I'll post some pics when I can get out to the garage.
My other bike is a '65 BSA Lightning that I bought as a rolling basket case, and this is the one that's never gonna be finished. New head with valves, guides, etc., complete rewire front to back (freakin' Lucas electrics!!) and the list goes on. When she's running, she's a blast, but this bike has been quite the "educational" experience.