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Dave

2024-06-11, 20:02:05
Have you tried the new Drafts feature yet? I just lost a long message today and learned my lesson. It is a good idea to save a draft of any long post you are writing. You can then just keep writing and keep saving a draft, knowing you have a backup if there is a glitch. The draft is automatically deleted when you post the message.

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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Ew350 non return oil valve

Started by Neilj, 23 Oct 2021 at 16:04

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Neilj

Evening all.does anyone have the drawings to make the oil valve that goes into the front cylinder or even better one they can sell me.Thanks Neil

cardan

Hi Neil,
I'm sure I have one spare, but postage from Australia to the UK is a complete lottery at the moment - somewhere between a week and three months (from experience!). But we can try is you can't source one locally.
Cheers
Leon

Neilj

That's great I'll hold on see if anyone in the uk comes back with one otherwise that would be brilliant.thanks Neil

cardan

Hi Neil,

After a brief moment searching for the lost tin of oil fittings... I came up with two different non-return valves. The short one screws into a 7/16-20 thread, the long one has a much smaller thread, which seems to be tapered - something like 24 tpi on a diameter of about 0.300".

The long one is certainly DOuglas, as it is stamped with the DK monogram.

Is one of these correct for the EW?

When used on a vintage JAP engine, where oiling relies on crankcase vacuum, there is usually no spring on the flapper valve, but I think Douglas tended to use a very light spring to hold the flapper valve up against its seat.

Leon

Neilj

Think its the longer one read somewhere the shorter one fits 2 1/2 hp and the long one EW to clear the fins or some reason?

Neilj

looking at the thread again its defiantly the long one. Thanks Neil