Author Topic: M21 clutch choice for sidecar use?  (Read 72 times)

0 Members and 1 Guest are viewing this topic.

berniej

  • Blue Star
  • **
  • Posts: 89
    • View Profile
M21 clutch choice for sidecar use?
« on: 12 February, 2019, 10:47:00 »
I have a 4 spring clutch in the M21 that I've just built to pull a sidecar. It's slipping and may just need new plates or adjustment.

However, I also have the single spring - AA? - clutch in another solo M21 and wonder if this would actually be the better clutch to use for hauling the chair in which case a clutch swap might be the best way to go?

Cheers,
Bernie
'49 M21/B31 hybrid
'56 M21 combination
Bantam D7
C15 project
B40 Sportsman project

DEAN SOUTHALL

  • Silver Star
  • ****
  • Posts: 343
    • View Profile
Re: M21 clutch choice for sidecar use?
« Reply #1 on: 12 February, 2019, 17:08:01 »
I've lugged a sidecar (two up and camping, flogging up M1,  to work daily) on a four spring with no problems. IOf you are havinmg problems it's down to clutch set up. If you already have single spring you don't need me to tell you these can be a real pita awhe they decide to play up. I'd deffo stick with the 4 spring and just get it sorted.
BSA: turning ordinary men into mechanics since 1910

berniej

  • Blue Star
  • **
  • Posts: 89
    • View Profile
Re: M21 clutch choice for sidecar use?
« Reply #2 on: 12 February, 2019, 17:43:43 »
Thanks Dean - I'll strip and see - probably just needs new plates and a proper setup.
I'll check springs too as the whole bike has spent the last thirty years or so in a bog before the restoration!

Cheers,
Bernie
'49 M21/B31 hybrid
'56 M21 combination
Bantam D7
C15 project
B40 Sportsman project