Originally Posted by Aussie Bruce
1 there is no cush drive in the back end of these bikes its done in the transmission drive line with a cam and spring arrangement very robust set up and un-burstable.
OK, fine--there's no cush drive. I'm going by Ebay pictures of the drive flange. It's the same thing...in fact, even easier now that I've seen a picture of the actual wheel: it's a cush-drive flange that's just bolted to the wheel:
Mating to a custom hub just can't get any easier than that. The huge diameter of the flange area on the wheel is due to the drum on the other side, not anything else in there is that big. IE: a turned hub would not need to be much bigger than the drive flange--if that large.