Print Page - B21 Clutch parts

Title: B21 Clutch parts
Post by: K Walton on 01 Jul, 2025, 18:25

Does anyone know where i can get replacement clutch parts for my 1937 B21

Title: Re: B21 Clutch parts
Post by: Y13 Alan G on 02 Jul, 2025, 18:59

I am not familiar with the B21. Does it have a BSA 6 spring clutch as fitted to many BSA's from at least 1929 until 1939 including 1929 Sloper & 986 Vee twins until 1939 & BSA Y13 1936 to 1938. If so I may be able to help you.

Title: Re: B21 Clutch parts
Post by: Greenfield on 02 Jul, 2025, 19:35

It depends on what you're looking for.
The basket is the same as on a C10 but a quick look didn't find one
The metal plates are common with many BSAs and are readily available
The driving plate is also a common part and available
The chainwheel is the same as on a C10 and Burtons have them.
Hope that helps

Title: Re: B21 Clutch parts
Post by: K Walton on 03 Jul, 2025, 19:06

Thanks Guys , that is useful info, I have sorted the friction plates out but have just realized that the chain wheel has corks inserted, so need to sort one of those,

Title: Re: B21 Clutch parts
Post by: K Walton on 03 Jul, 2025, 19:10

Hi Y13 Alan G, yes the bike does have the 6 spring clutch, what I am after now is either the corks for the chainwheel or a complete chainwheel, If you are able to help it would be great.

Kevin

Title: Re: B21 Clutch parts
Post by: Y13 Alan G on 04 Jul, 2025, 22:34

Hi Kevin, the clutch as fitted to the 1929 Sloper, 1932 G12 986 Vee Twin & the Y13 & G14 has 6 springs in a circle with alternate steel and fibre plates, no cork inserts. So unfortunately I am unable to help as I only have clutch spares for the above bikes

Title: Re: B21 Clutch parts
Post by: Greenfield on 08 Jul, 2025, 13:26

Hi Kevin
I think the clutch chainwheel is 65-3919 available on ebay today.

BSA Owners' Club Workshop Discussions

The BSA Workshop => Pre War => Topic started by: K Walton on 01 Jul, 2025, 18:25