Back in my misspent youth, an older friend of mine had a 360 challenger (1968) used it in the local scramble club near where i grew up, it was 1973 fueled by last nights beer input he awoke bright and early one Saturday and decided to go out and do a little practice and get ready for Sundays racing. That greaves was a beast as i remember it although i never did ride it as i was far too young. The bike sadly met its end that very morning buried in the unnamed railway crossing gates at the end of the lane leading to the practice field. Rider broke his collar bone and left thema, the bike was left damaged at his fathers farm in a shed unloved for ten or more years. And was sold at the farm auction when they closed the farm, i was at the auction buying a ford tractor, that bike made 22 pounds , and at the time i simply did not have enough money left to buy it. Wish i had.