Can someone identify this rear hub

[Topdad]

A mate of mine is trying to source a 47 ridgid B31 rear hub he mentioned something about a "thin" spindle type  and a "large" spindle type does any of that make sense to you guys or good you give any ideas as to what he needs to look out for. Oh anyone got one to sell ?

[limeyrob]

I have an idea that the '47 has a fixed spindle like a bicycle wheel that goes into forks on the frame.  The later wheel (49/50?) is the same as the '48 A series with the pull though parallel spindle and holes in the frame.
Here's a rigid wheel on e-bay, but the problems are, it could be M series not B and I suspect the difference is the sprocket which is integral with the drum and hub so its hard to identify.
Given that these are 80 years old most sprockets will be worn so i think it wil be a case of machining off the old teeth and having a ring welded over.
https://www.ebay.co.uk/itm/387618413540?_skw=BSA+B31+rear+wheel&itmmeta=01JD71K6KCZ161DRFZRPW7WG0K&hash=item5a3fdb9be4:g:5Q4AAOSwL6Bl1Qq~&itmprp=enc%3AAQAJAAAA0HoV3kP08IDx%2BKZ9MfhVJKkC9SCXzfuYnrNhlfC4c5xC2q9Ee5Fzt%2FZt0eKBVoNlYpokA%2Bz3vcUVkG4G7RYa2zfEFhWSjEgUIXaWcPUVhN0BKfSQpvitG%2FR2A4jITVVzzsjkqf78rt%2Fv5uBVpg2WGLjaO7uDaZHtGPYnedQRCAueFvnnHH%2BGPvu1JjZla38JAFyB0%2BPnT29v7hQWgUgSK5bG0yTfVzeWZu0VHsBHT3t3W43O79wom2FvhxffAes87zmu8Ko%2FPF3vcyx%2FqzzW%2BCY%3D%7Ctkp%3ABk9SR-LpzOHpZA

[Topdad]

Thanks for that I'm getting him to take pictures cheers Bob 

[Brian]

That wheel on e-bay is the correct one for a 47' B31. I had a B31 and modified the whole axle set up, they have snail cam adjusters and cup/cone bearings. Rather than try to explain what I did I'll add some photos.

[Rex]

Looks the same as my old 1936 Empire Star.