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Douglas 1913 Model P motorcycle

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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?

Dave

2025-01-07, 19:16:39
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Dave

2024-06-11, 21:02:05
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Dragonfly front engine spacers

Started by Sgtbiro, 21 May 2020 at 22:03

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Sgtbiro

Hi can some kind sole please tell me What the widths of the two Front engine mounting spacers on a dragonfly Are.
Cheers Kevin...

patrickwhitty

On the near side my Dragonfly has a 1.4mm spacer (6 in plate 22 of the spare parts catalogue) followed by a nut, then the exhaust pipe clamp and a second nut.
On the off side the exhaust pipe clamp is under the head of the bolt followed by a 2.1mm spacer (5 on plate 22).
I've attached a couple of photographs, I should have cleaned the engine first.
Patrick

eddie

 Hi, Just checked the spacers on my 'Fly - they are 14mm on the nearside and 21mm on the offside. Wasn't it good in the old days when our bikes were built and everything was imperial (9/16" and 13/16") - you couldn't get it wrong by misplacing the decimal point!

   Eddie.

patrickwhitty

Thank you, that's more embarrassing than revealing the grubby state of the engine.

Sgtbiro

Thanks guys that`s brilliant, i am just happy you can still order a good old fashioned pint (when the pubs are open that is)

Cheers Kevin..

EW-Ron

I recall a letter to the local rag, when things were first being metrified, or is that metrificated.

Local put out a note with the milk bottles, asking for 1136 ml of milk
In the morning, nothing.
Another note, asking where is the milk, thats 2 pints.
Answer with the milk, "I didn't know how much that was".

With Brexit, will cows go back to producing pints ?
And yet engines have been in cc for many a century.
With horsepowers coming a close second for a while there...

We may have strayed here, a little..