Author Topic: Gearbox identification  (Read 2072 times)

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Offline Rob

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Gearbox identification
« on: 23 Sep 2012 at 11:15 »
I have a gearbox with the prefix "FG" followed by 3 numbers (708)

What is it off? I could not see it on Doug K's very helpful charts. I believe it to be for an S1.



Offline Reg

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Re: Gearbox identification
« Reply #1 on: 23 Sep 2012 at 17:45 »

Have had a quick look through Jeff Clew's book 'The Best Twin' and found in Appendix 3 for gearbox symbols 1919-37 the prefix FG states 3 1/2hp ohv (with new pattern support arm and kickstart support) The S1 was a 3 1/2ho model 494cc. The previous prefix for this model was AG. I'm sure some one else out there can enlightening us further!