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Douglas 1913 Model P motorcycle

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Douglas 1915 3 Spd-Gearbox and Clutch

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Dave

2024-06-11, 20:02:05
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Dave

2024-06-08, 18:30:04
For Sale
xman has two very nice 1950's machines available - a green 1950 mk4 and black 1951 mk5 - both in good condition and running well.

Dave

2024-06-07, 02:13:36

Dave

2024-06-03, 08:23:05
For Sale
Duncan has just listed his green and cream 1957 Dragonfly for sale with spares and documents.

Dave

2024-06-02, 08:34:05
Parts avalable
alistair still has parts available - barrels, carburettor, castings - see all listings.


Dave

2024-06-01, 18:33:27

Dave

2024-05-28, 00:09:46
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1923 Douglas frame

Started by Spike, 09 Jun 2020 at 08:57

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Spike

Hi everyone
Can someone tell me what the bottom engine lug is for, I've never seen one before. Frame is 1923.



Image converted to linked file - Dave, 16Sep2021

carl denton

all the pre 1919 frames ,, the frames with a goose neck all had them . think they were just trying to use them up a few of my frames have them .

yours carl

Hutch

Spike,

As Carl says this lug was used on the earlier 2 3/4 hp frames and it is so you can take the front barrel off easily. By taking out the top bolt, but leaving the bottom one in place (but slightly loose) and then slacking off the rear engine clamp bolts you can slide the engine back in the frame. This way there is enough clearance for the front barrel to clear the front frame down tube for removal and saves you taking the engine out of the frame just to take the barrel off.

I guess you could do the same thing with the later frames by taking both front bolts out and sliding the engine back and doing the rear clamp up again to stop the engine flopping about without too much effort so is probably why they simplified the design?

-Ian

Spike

Thanks Ian that seems to make sense. I thought it might be a sidecar mount.
Thanks Darren