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Lat Fuller

2025-07-20, 02:39:50
I am pretty desperate for a rear cylinder for my veteran Douglas 1917 2 3/4hp "W" model.   I there is anyone who may have one of these that can be re-sleeved or know where I may find one I would be very pleased for the help.  I have a number of engine parts that I can exchange such as matching crankcases, conrods, crankshaft, flywheel etc. Any help appreciated.

Lat Fuller

2025-06-04, 05:57:00
Does anyone have the specifications for the oil inlet valve spring for early 2 3/4 engines - Part number 424.   I have tried to order one from the club spares but apparently Jeff Swan is indisposed at the moment.

skapoor

2025-05-19, 09:23:12
I am looking for a carburettor for veteran Douglas motorcycle engine-13651. Could you please help me with this?

Exaust pipes / Silencers for T35 - 90Plus

Started by douglas1947, 06 Jul 2015 at 17:50

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douglas1947

Has anyone an idea for 90Plus ex pipes and silencers (my one had original high level, I would prefer! But I can also live with normal one.)

Michael

AndyH

Hi

You can buy them from feked.com online, I am pretty sure they are all the same size Mk V and Plus 90.

I have a set of Plus 90 pipes and they are exactly the same size as the header pipes on my 350 comp.

Regards Andrew

eddie

Hi,
     Most of the postwar exhaust pipes were bent to the same radius - just the length of the tails varied from model to model. The pipes for the Mk1 and Mk3 machines also had a twist in the bends to suit the wafflebox silencer. Plus series and Dragonfly pipes had a collar at the front end (for the screwed ring on the Pluses, and to retain the copper/asbestos washer on the Dragonfly). The only oddities were the pipes fitted to the Mark 4 Sports machines that took various routes around the pillion footrests.

     Regards,
                   Eddie.

douglas1947

Hi,

the difference to the MK3 to 5 pipes is the ring welded on the pipes for the nut to hold the pipe to the cylinder head.

Armours offers only the standard MK pipes without a ring.

I hope anyone can help.

Michael

douglas1947

I`m still looking for pipes for 90+.
They are different to the normal MK pipes, because they have a ring welded on for the exaust nut.

Has anyone an idea?

Michael