austin6728 Posted March 31, 2021 Report Share Posted March 31, 2021 I have just purchased what I've been told is a 1968 BSA B40 Otter Military with engine number B40 GB 1123 can anyone help with confirming the age of the bike? I'm also looking for a manual and want to make sure i purchase the correct one Many thanks in advance Quote Link to comment Share on other sites More sharing options...
b40rt Posted April 1, 2021 Report Share Posted April 1, 2021 http://www.ratiopublishing.co.uk/The-Rupert-Ratio-Unit-Single-Manual-Volume-1 1 Quote Link to comment Share on other sites More sharing options...
jon v8 Posted April 1, 2021 Report Share Posted April 1, 2021 (edited) The Otter frame is one thing,made later than the engine which was originally fitted into a BSA frame. Not sure if you can date an Otter frame,has it got any numbers on it ? The engine can be dated from the factory dispatch records, the BSA owners club can help with that. You might find this interesting; http://www.bsaotter.com/2020_a_new_decade.html Edited April 1, 2021 by jon v8 1 Quote Link to comment Share on other sites More sharing options...
kickstart0748 Posted April 2, 2021 Report Share Posted April 2, 2021 Hello I see you are asking for details of the machine you have just bought if you look on the otter website you will see picture of the bike along with what I did to it i is on the website above under bikes for sale cheers Hughie 1 Quote Link to comment Share on other sites More sharing options...
austin6728 Posted April 4, 2021 Author Report Share Posted April 4, 2021 On 4/2/2021 at 11:08 AM, kickstart0748 said: Hello I see you are asking for details of the machine you have just bought if you look on the otter website you will see picture of the bike along with what I did to it i is on the website above under bikes for sale cheers Hughie Many thanks Hughie that was great to get that info and see the pictures of the bike. Can you possibly confirm the age i was told it was a 68 and when i look up the engine number it is a little confusing to me and think it might be 67 screenshot below if for year 67 i don't seem to bee anything in 68 for B40GB Any info would be very much appreciated Cheers, Austin PS I'm new to these old bikes Quote Link to comment Share on other sites More sharing options...
austin6728 Posted April 4, 2021 Author Report Share Posted April 4, 2021 On 4/1/2021 at 5:54 AM, b40rt said: http://www.ratiopublishing.co.uk/The-Rupert-Ratio-Unit-Single-Manual-Volume-1 Thank you 👍 Quote Link to comment Share on other sites More sharing options...
austin6728 Posted April 4, 2021 Author Report Share Posted April 4, 2021 On 4/1/2021 at 8:11 AM, jon v8 said: The Otter frame is one thing,made later than the engine which was originally fitted into a BSA frame. Not sure if you can date an Otter frame,has it got any numbers on it ? The engine can be dated from the factory dispatch records, the BSA owners club can help with that. You might find this interesting; http://www.bsaotter.com/2020_a_new_decade.html Thank you i haven't seen any numbers on the frame but to be honest i haven't had a real good look and if there were they may have been painted over at some point Cheers, Austin Quote Link to comment Share on other sites More sharing options...
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