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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?

600cc side valve replacement pistons

Started by Dave, 01 Jun 2007 at 22:57

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Dave

01 Jun 2007 at 22:57
Rossco kindly sent in the following information and photos.

QuoteHi all. The replacement pistons fitted to my D33 were from a Briggs & Stratton, Rover mower engine. The crown needed to be machined to suit the old piston, gudgeon pin to crown measurement. Gudgeon larger diam, also circlips not end pads. Regards Rossco.



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