Two thoughts for speedad-dik [only jokin]
I have seen lots of young blokes ride like they've never come off -for a while-'.till they do!
I rode a rigid T100 at Moorebank one meeting mid 60's and one meeting only. When I got home that day I got a hacksaw and cut the back off the frame.
The next day I was suffering from 'motorcyclists constipation', for the uninformed that is when the turd is riveted over at the end.
cheers pancho.