BSA Owners' Club Forum

The BSA Workshop => Pre War => Topic started by: Mike Farmer on 01 December, 2017, 08:25:15

Title: 1931 Sloper threads.
Post by: Mike Farmer on 01 December, 2017, 08:25:15
 :)

Hi. What would be the normal(expected) threads on a 1931 550 sloper. BSF, BSW, CEI ??????????????

Advice appreciated.

Mike 8) 8)
Title: Re: 1931 Sloper threads.
Post by: Hoppe30 on 01 December, 2017, 11:08:16
all of the above, CEI 20TPI and BA. Typically BSW for threads in alloy, CEI 26 TPI as standard thread, BSF in cylinder, BA for electrical (switches on combination levers (5BA), magneto etc), CEI 20 TPI on footrest rods and bigger studs. :D
Title: Re: 1931 Sloper threads.
Post by: Mike Farmer on 01 December, 2017, 16:04:18
 :)

Thank you

Mike