Dear Matt,
Welcome to the Douglas web site and welcome as a new owner of a Douglas machine!
Hopefully over time you will realise what you have been missing from your fine classic stable and keep hold of your new purchase.
Your first port of call should be to register with the London Douglas Motorcycle Club via Reg Holmes
www.douglasmcc.co.ukFrom there, you may access spare parts from Eddie Turner and also correct dating of your machine.
If you look on the left side of your headstock on the tube running down from the headstock (toward the top) to the lower left frame rail, you will find your model and engine number stamped.
Look on the crankcases on the left side just below the magneto platform and you will find the engine number.
This may or may not match the frame number by now.
From this we can give you further info as to what you have.
Next, if you can post some pictures, your bike can be identified as to correct parts for the year.
Most parts on the post war series are interchangeable so mods may have been made over the years.
The colour scheme of the paint and things like correct toolboxes, mudguard's & subframes can be identified for you.
Slipping clutch is no real problem. They are a car type and it will probably be worn friction plate or the oil seal at the back of the crank or both!
I have one in the garage the same at the moment. I covered 2K miles on it last year though. I rode from Huddersfield to Portsmouth and the clutch started slipping near Oxford on the way down. I made it to portsmouth and all the way back to Huddersfield.
Took it easy and as long as I did not rev it through the gears and backed off the throttle when the engine note picked up she continued happily.
I kept it between 55 and 60 all the way home!
To access the clutch the engine and gearbox will have to come out and be split.
These bikes are great, even for touring. At 60 on the M1 everything goes past you.
Don't let people tell you old bikes are no good for modern traffic. It is only the rider who maybe unwilling these days.
As for the prices of these machines, you are probably the best placed to comment as you just bought one!
For UK, prices have been moving back up steadily for a while now.
You can find anything from £1,000 to £3,500 depending on condition.
1 to 1.5K will get a restoration project.
2 to 2.5 oily rag to good restored and 3 to 3.5K mint, correct and original parts for the year. (in my opinion)
There are many enthusiasts that can help you on this site.
Give a little more information and pictures and you will be enlightened!
Best regards
Tom