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Douglas 1913 Model P motorcycle

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Douglas 1915 3 Spd-Gearbox and Clutch

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Lat Fuller

2025-07-20, 02:39:50
I am pretty desperate for a rear cylinder for my veteran Douglas 1917 2 3/4hp "W" model.   I there is anyone who may have one of these that can be re-sleeved or know where I may find one I would be very pleased for the help.  I have a number of engine parts that I can exchange such as matching crankcases, conrods, crankshaft, flywheel etc. Any help appreciated.

Lat Fuller

2025-06-04, 05:57:00
Does anyone have the specifications for the oil inlet valve spring for early 2 3/4 engines - Part number 424.   I have tried to order one from the club spares but apparently Jeff Swan is indisposed at the moment.

skapoor

2025-05-19, 09:23:12
I am looking for a carburettor for veteran Douglas motorcycle engine-13651. Could you please help me with this?

F/G31 threads

Started by alexd912, 05 Dec 2013 at 10:52

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alexd912

05 Dec 2013 at 10:52
HI all,

Firstly I have tried searching the forum but I was unable to find the correct answer.

Does anyone have a list of Nut & Bolt and TPI for the F/G 31 engine/Frame?

I have the common 7/15 25TPI.

Thanks in advance.

Regards

Alex
Best regards
Alex
1930 Douglas G31
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