The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Gearbox, Clutch, Primary => Topic started by: Lightningpower on 22.07. 2010 04:38

Title: Another Gearbox Question
Post by: Lightningpower on 22.07. 2010 04:38

On another semi-unit gearbox, I have a B 20 stamped onto the lug.  What could this mean?  Thanks again!

Title: Re: Another Gearbox Question
Post by: Lightningpower on 22.07. 2010 05:53

Another Question,
Why are these gearbox cases different?
It means somthing....  but what?

Title: Re: Another Gearbox Question
Post by: muskrat on 22.07. 2010 10:46

Very interesting, just a guess, one could be off a longstroke rigid the other off a plunger. The sprockets are different, it looks like a 530 on the left and 520 on the right.
Cheers