The sprocket was not threaded. It has a hole I ground in it just larger than the threads. I slipped it on the hub, screwed the ring on untill it seated, and tacked it. Then I removed it to add more welds.
I considered welding a ring on each side for more strength, but I have tried similar things (like welding two nuts together while on a bolt), and the threads always seem to bind.
What type of threads are on your hubs left hand side? Are they the same size and pitch as the right hand side just reversed? What parts besides the BGF sprocket have you found that fit? I could not find anything on the staton site (so much to look through there, I did not even know where to look). If it is slightly smaller than the freewheel side it may be the same as a fixed gear cog lockring.
I considered welding a ring on each side for more strength, but I have tried similar things (like welding two nuts together while on a bolt), and the threads always seem to bind.
What type of threads are on your hubs left hand side? Are they the same size and pitch as the right hand side just reversed? What parts besides the BGF sprocket have you found that fit? I could not find anything on the staton site (so much to look through there, I did not even know where to look). If it is slightly smaller than the freewheel side it may be the same as a fixed gear cog lockring.