Help for a Douglas fan in Argentina

[raul]

Hello there.!, I'm Raul from Argentina and I'm close to buy a Douglas motorcycle, but I need some help to understand model, where are the engine and frame numbers an any other tips to identify the motorcycle. I would really appreciate any help. I'm attaching a photo.... thanks in advance..
Raúl

[Doug]

Hello Raul,

It looks to be a Mark 3 Sports model. Frame and engine numbers can be found as per the marked up image below.



It has the early sub-frame mounting (A) indicating a Mark 3 or earlier frame. The clips at (B) are for the panier toolboxes as fitted to the Mark 3 Sports model. The appropriate frame codes and numeric ranges can be found via the link in this post:

https://www.douglasmotorcycles.net/index.php?topic=490.0

For example a Mark 3 Sports should be stamped on the engine and frame from T35/S/4001/S to  T35/S/4001/S6589/S. The engine and frame numbers would have matched upon leaving the factory.

-Doug

[javito86]

raul buenos dias!
Soy Javier de Argentina, de Cordoba!
tengo una Douglas hace casi 2 años y la estoy restaurando, te paso mi mail asi nos comunicamos!

Saludos!

jiso86@gmail.com

[Doug]

Raul,

Pictures of a Mark 3 Sports restored to original condition (except for finned faux exhaust nuts) can be found in this post:
https://www.douglasmotorcycles.net/index.php?topic=1995.0

-Doug

[tck]

Mk 3 indeed but is that an induction tube I can see?
Has it been fitted with a manifold to run from 1 carburettor like the dragonfly? I did not think its for an air filter as the bore is small and it looks like a flange with vertical holes to match the cylinder head 'carb' fitting

[raul]

Doug, thanks a lot for your help, because of you I was able to check frame and motor serial numbers!! Right now I'm listing spare parts such as piston rings, gaskets, seals, carburetors, etc to buy up there in a dealer, if you have any suggestions will be welcome..
Again thks a lot!!!
Best regards!
Raul

[raul]

Tck, excelent catch!! Is a manifold to feed both cylinders with one non original carburator. It is Mk III the serial numbers confirm that.
Regards

[tck]

that has got to be a real power sapper. two separate carburettors would be first on my list I actually wince when I see the bend in the pipe just before the cylinder head