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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?

Mk Gearbox shims

Started by NeilR, 19 Apr 2022 at 16:25

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NeilR

Hi,

Unfortunately the LDMCC spares don't have any of the shims that fit between the gearcase and final drive housing. Can I ask if anyone knows what material are they made with - or is there something better? This joint has always leaked a bit - any recommendations to stop that?  Cheers,  Neil

tck

My shims were brass shim as befits 1948

Clive

Hi Neil
I fitted a sealed bearing the last time the G/Box was striped, dont be perswaded to remove the inner seal  these bearings are lubed for life  ,new shims where made from standard brass shin stock i am sure you can still buy this stuff from a motor factors sometimes sold in a tin with differant thicknesses rolled up in  the container ,assemble with standard sealant
hope this helps
Clive

NeilR

Thanks Chaps, as luck would have it I had a quick look on fleabay and someone had 9 up for sale so got them and they are various thicknesses and used, but quite reasonable. Four came off so I think I will have enough to complete the job (to fit an extra washer to the kickstart ratchet shaft in the hope it fixes the poor engagement issue - it's quite a sod of a job).