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Douglas 1913 Model P motorcycle

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Douglas 1915 3 Spd-Gearbox and Clutch

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Dave

2024-06-11, 20:02:05
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Dave

2024-06-08, 18:30:04
For 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.

Dave

2024-06-07, 02:13:36

Dave

2024-06-03, 08:23:05
For Sale
Duncan has just listed his green and cream 1957 Dragonfly for sale with spares and documents.

Dave

2024-06-02, 08:34:05
Parts avalable
alistair still has parts available - barrels, carburettor, castings - see all listings.


Dave

2024-06-01, 18:33:27

Dave

2024-05-28, 00:09:46
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Throttle lever friction adjustment

Started by Simon Giles, 03 Apr 2016 at 20:48

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Simon Giles

Hi all,

I have an operating/adjustment question regarding the throttle lever on my 1926 EW.

Could you please advise how Douglas intended the throttle friction to operate?

Was the throttle designed to return to idle under spring tension when the rider's hand is off the throttle or should it be set to hold position? - an early form of cruise control!

Was it a matter for operator preference or did the manufacturer have a recommendation?

With thanks,
Simon

Doug

Simon,

You tighten the friction adjustment so that it holds the lever position. Operators probably had a preference as to how stiff or free the action was, but I think it was a general convention for lever action throttles of that time. Hence Douglas never saw fit to comment on it.

-Doug

Simon Giles

Great, thanks very much for you quick response Doug.
️Cheers,
Simon