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Title: Pre-unit gearbox sprocket nut
Post by: rightfoot_shifter on 24 Mar, 2018, 08:00

Hi Guys
I have a couple of questions concerning the ringnut that secures the gearbox sprocket.
Firstly can anyone confirm the thread form eg TPI?
Secondly has anyone had problems with the SRM replacement part (st stl hex with built-in seal) fitting their sleeve gear; what was the problem and what did you do about it?

Cheers
Russ

Title: Re: Pre-unit gearbox sprocket nut
Post by: AWJDThumper on 24 Mar, 2018, 09:10

I believe the nut is 1 3/16" x 24 TPI; essentially, a BSC thread.

Title: Re: Pre-unit gearbox sprocket nut
Post by: AWJDThumper on 24 Mar, 2018, 09:37

I don't know whether it is relevant but I noticed that the SRM replacement nut is not supposed to be suitable for non swinging arm models for some reason.

BSA Owners' Club Workshop Discussions

The BSA Workshop => Singles => Topic started by: rightfoot_shifter on 24 Mar, 2018, 08:00