BSA swingarm transmission chart.

[Pollock]

I found this in my pics and thought it might be handy to a few.

[LJ.]

I'll probably not have any use for it, but never the less... Interesting reading. Thank you for posting it.

[bsa-bill]

This is interesting and solves a little mystery
I'm building up my gearbox and as it has been some weeks since I was last at it, I chose to check the gear positions/ no of teeth against the part book.
The problem came when I got to the first gear on the Layshaft ( 1st gear - nearest the kickstart ?) part number on the parts book diagram is 67-3199, this number is not listed amongst the parts descriptions though and in fact it probably should be part number 42-3097 as in the chart above .

So thanks for that

All the best - Bill