Bought a bit of 30mm BDS bar for the rear axle shaft. The plan is to turn the ends to 25mm dia to suit the rear hub taper roller bearings (both sides will be lockable at will) and then flame harden them. The main shaft will run in 30mm bearings mounted on the frame ala hardtail style. The sprocket will be mounted on a flange and I’ve been told by my biker buddy that the rubber bushes on the original sprocket mount are there to take the shock load and to stop the sprocket ending up with hooked teeth. I have some nylatron that I will use to make some new somewhat harder bushes that will be inserted into the flange and then the sprocket will be bolted to bolts that run through the flange and by using loctite and locknuts allow the sprocket to be secured in place whilst having a little radial float so that the bushes and not the sprocket take the shock.
Progress maybe slow this week but we’ll keep pushing on part by part, gotta go here comes the postman 😉