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Douglas 1913 Model P motorcycle

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Douglas 1915 3 Spd-Gearbox and Clutch

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


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


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


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six douglas crankshafts --yes 6-- for sale.

Started by alistair, 22 Apr 2024 at 11:21

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can you identify these douglas crankshafts and rods.
another lot from the massive hoard of bits recently acquired but not needed so for sale.
number them 1to 6 from top left to bottom right.
identify them for me.
buy them. individually or as a lot.
the rods all turn freely.
they have been stored oily.
so are probably useable.
let me know.


Hi how much for the 23/4 crank left side bottom  thanks



How much for the bottom left no 6 crank .
Cheers clark 



Hi Alastair, do all the top row cranks have oilway passages through the centre of the shaft, Regards John


Crankshaft #1 I can see the flat on the timing side journal to drive the crankcase breather disk. That would make it 1931-37, 250 or 350cc. At some point between 1931 and 1935 they changed the conrod design from a press in race (that was prone to work loose) to a integral case-hardened surface for the bearing rollers.

I cannot see if #2 & #3 have the flat. But the center web is less finished and the throws have the earlier look of the EW. So 1926-1930 350cc.

I could use a crankshaft for my 1931 350cc A31, but the several examples I have acquired and disassembled was heavily worn on the center web due to the rollers walking sideways and i just don't see my luck changing!