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Find, Fix, Restore, Ride - Douglas motorcycles
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Aero 250 for sale
by Col
[Yesterday at 21:59] -
LEFT OVER PARTS FROM DOUGLAS RESTORATIONS FOR SALE.
by LATDOUGNUT
[01 Apr 2025 at 16:54 ] -
douglas aero 600project bike for sale.
by alistair
[29 Mar 2025 at 12:09 ] -
Cw and Ew Fork Blade
by karri
[24 Mar 2025 at 10:55 ] -
Parts looking for good home
by Sunbeam36
[18 Mar 2025 at 14:50 ] -
aluminium casings for you to identify and buy!
by alistair
[19 Feb 2025 at 11:46 ]
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petrol tank cap
by roger h
[Yesterday at 22:14] -
Bike wanted - Douglas Dragonfly
by theyard
[07 Apr 2025 at 14:38 ] -
Douglas S6 Gearbox
by cbranni
[07 Apr 2025 at 07:11 ] -
Douglas Aero Clutch
by Hutch
[03 Apr 2025 at 05:24 ] -
Parts wanted
by Hutch
[03 Apr 2025 at 05:06 ] -
Douglas Aero 1936 - Mag drive gear
by Bruce Shadbolt
[25 Mar 2025 at 22:40 ] -
B&B 123-5 btm feed float bowl top
by Mike Catling
[02 Mar 2025 at 18:24 ] -
luggage rack wanted for 80 plus
by simon.d.hewitt@gmail.com
[15 Feb 2025 at 16:48 ] -
1913 Douglas Parts wanted
by oldtimerlover
[25 Dec 2024 at 20:46 ] -
80 or 90 Plus
by Neville Heath
[05 Dec 2024 at 11:52 ]
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Dave
2025-01-07, 19:16:39Forgotten your password?
Click the 'Log in' button in the main menu, then use the 'Forgot your password?' function to create a new one.
The new password will be sent to your email address. If your email address has changed since your last login, that method won't work as the email will go to the old address in your profile.
In this case, use the 'Contact' option in the main menu to send us a message and we can issue a new password.
Click the 'Log in' button in the main menu, then use the 'Forgot your password?' function to create a new one.
The new password will be sent to your email address. If your email address has changed since your last login, that method won't work as the email will go to the old address in your profile.
In this case, use the 'Contact' option in the main menu to send us a message and we can issue a new password.
Dave
2024-06-11, 21:02:05Have 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, 19:30:04For 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.
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, 03:13:36
Dave
2024-06-03, 09:23:05For Sale
Duncan has just listed his green and cream 1957 Dragonfly for sale with spares and documents.
Duncan has just listed his green and cream 1957 Dragonfly for sale with spares and documents.
Dave
2024-06-02, 09:34:05Parts avalable
alistair still has parts available - barrels,carburettor, castings - see all listings.
alistair still has parts available - barrels,
Dave
2024-06-01, 19:33:27
Dave
2024-05-28, 01:09:46Welcome to the new site!
Recommended viewing for a fast start...
- Quick Tour of the Front Page
- Quick Tour of the new Attachments
Learn all about attaching photos in the User Guide. Any problems with anything please Contact us Faulty links fixed - 01June2024
Recommended viewing for a fast start...
- Quick Tour of the Front Page
- Quick Tour of the new Attachments
Learn all about attaching photos in the User Guide. Any problems with anything please Contact us Faulty links fixed - 01June2024
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Recent posts
#21
General Douglas Discussion / Re: DOUGLAS GENERATOR(?) ENGIN...
Last post by graham-xrfx - 09 Apr 2025 at 19:15OK - It may be there is not much it can still give, but at least we have to get a look. It might help another get to look like this =>
#22
General Douglas Discussion / DOUGLAS GENERATOR(?) ENGINE - ...
Last post by Vitesse - 09 Apr 2025 at 17:57A friend of mine is clearing his father's house in Argyllshire and has found this in the basement. If anyone wants it he will put it in the van on Friday when he returns home to Buckinghamshire.
He doesn't want anything for it (though I doubt he'd refuse a drink!), he'd just rather not scrap it. It has been in the basement a long time!
Message me if you want me to put you in touch.
He doesn't want anything for it (though I doubt he'd refuse a drink!), he'd just rather not scrap it. It has been in the basement a long time!
Message me if you want me to put you in touch.
#23
General Douglas Discussion / Re: Douglas MkV 1951 carburett...
Last post by Pallijen15 - 09 Apr 2025 at 00:18Thanks Eddie, I'll add that to the list
#24
General Douglas Discussion / Re: Douglas MkV 1951 carburett...
Last post by eddie - 08 Apr 2025 at 12:56Check out the float chamber. In the bottom of the chamber there is a central boss with a guide hole for the bottom of the needle. Carefully clean it out with a sharp drill. Debris can accumulate in the hole and drag on the needle, causing an erratic fuel height (Severe cases can cause total fuel starvation!).
Regards, Eddie.
Regards, Eddie.
#25
General Douglas Discussion / Re: Emgineer Required
Last post by EW-Ron - 07 Apr 2025 at 22:13Engines that use drip feed lubrication don't actually have oil rings as such.
They burn or blow out any and all surplus oil
So as your previous enquiry thread on this has suggested, the problem is much more likely
to be a crankcase full of oil, for whatever reason.
Investigating the lube system is more likely to pay dividends.
Leaving the oil tap turned on while standing, perhaps ?
Using too thin an oil maybe, so its all leaked down into the 'sump' ?
Damaged or blocked sump drain maybe ?
Someone has twiddled the drip feed rate up to MAX ??
Hopethishelps !
They burn or blow out any and all surplus oil
So as your previous enquiry thread on this has suggested, the problem is much more likely
to be a crankcase full of oil, for whatever reason.
Investigating the lube system is more likely to pay dividends.
Leaving the oil tap turned on while standing, perhaps ?
Using too thin an oil maybe, so its all leaked down into the 'sump' ?
Damaged or blocked sump drain maybe ?
Someone has twiddled the drip feed rate up to MAX ??
Hopethishelps !
#26
General Douglas Discussion / Emgineer Required
Last post by B.Shepherd - 07 Apr 2025 at 15:39Does anyone know an engineer who can work on a 1926 EW 350.
I think the piston rings are broken and the engine is smoking a lot.
I live in the GREATER MANCHESTER area if England but don't mind if the engineer is anywhere in England.
Brian Shepherd
brian.shepherd28@virginmedia.com
I think the piston rings are broken and the engine is smoking a lot.
I live in the GREATER MANCHESTER area if England but don't mind if the engineer is anywhere in England.
Brian Shepherd
brian.shepherd28@virginmedia.com
#27
General Douglas Discussion / Re: Excessive smoke and oil co...
Last post by B.Shepherd - 07 Apr 2025 at 15:33Quote from: B.Shepherd on 25 Mar 2025 at 11:36 I recently had my engine overhauled on my 1926 EW 350 and the engine was running fine until recently when lots of white/grey smoke and oil started coming out of the exhaust to the extent that I had to shut the engine down as the whole road outside my house was disappearing in the smoke. I think the engine might have a broken Piston ring as the oil is getting onto the plugs. Has any members experienced anything similar and if so what is the cure.
Reply to: brian.shepherd28@virginmedia.com
#28
Douglas Motorcycles and Parts Wanted - Private / Bike wanted - Douglas Dragonfl...
Last post by theyard - 07 Apr 2025 at 14:38Hi,
I am looking for a Douglas Dragonfly, this is for my personal use and ideally in working condition but not worried if scruffy as will be happy to restore/repair out of season each year. This is a purchase to look after/preserve an old bike, so not looking to break the bank.
I am based in the UK (midlands).
I am looking for a Douglas Dragonfly, this is for my personal use and ideally in working condition but not worried if scruffy as will be happy to restore/repair out of season each year. This is a purchase to look after/preserve an old bike, so not looking to break the bank.
I am based in the UK (midlands).
#29
Douglas Motorcycles and Parts Wanted - Private / Re: Douglas S6 Gearbox
Last post by cbranni - 07 Apr 2025 at 07:11Hi Phil
I have been looking for a replacement gearbox for my T6, (preferring the four speed) for over a year and have now given up looking, the gearbox on my T6 is very noisy in third but having the box apart three or four times I can find nothing wrong so I am riding the bike as it is but I try to avoid the use of third gear.
I did buy a set of shafts and gears from a forum member but they were rusted rubbish and only good for door stops, I wish you good luck with your search.
Kind regards Colin
(Swansea)
I have been looking for a replacement gearbox for my T6, (preferring the four speed) for over a year and have now given up looking, the gearbox on my T6 is very noisy in third but having the box apart three or four times I can find nothing wrong so I am riding the bike as it is but I try to avoid the use of third gear.
I did buy a set of shafts and gears from a forum member but they were rusted rubbish and only good for door stops, I wish you good luck with your search.
Kind regards Colin
(Swansea)
#30
General Douglas Discussion / Re: Douglas MkV 1951 carburett...
Last post by EW-Ron - 06 Apr 2025 at 21:48Quote from: Pallijen15 on 06 Apr 2025 at 10:55 If one of the carburettor were flooding would there not be a constant leak when taps open and engine off? Mine don't do this.Sounds like the flooding is not an issue then.
The fuel/float level would be the next thing to check.
Just removing the float chamber tops and comparing things could be instructive.
Don't run it or do any sparking like this !
OR, could be helpful if the floats could be swapped, side-to-side. ?
See if the problem changes sides ...
Comparing gaskets between the carbs still sounds a possibility also.
Have fun ....
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