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Douglas 1915 3 Spd-Gearbox and Clutch

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Dave

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

2024-06-11, 21:02:05
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Dave

2024-06-08, 19:30:04
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, 03:13:36

Dave

2024-06-03, 09:23:05
For Sale
Duncan has just listed his green and cream 1957 Dragonfly for sale with spares and documents.

Dave

2024-06-02, 09:34:05
Parts avalable
alistair still has parts available - barrels, carburettor, castings - see all listings.


Dave

2024-06-01, 19:33:27

Dave

2024-05-28, 01:09:46
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MkV Tappet adjustment

Started by Pallijen15, 08 Jun 2019 at 19:44

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Pallijen15

Hi, so I have the right side spark plug out and the piston is at TDC. The right side valves are now closed as there is correct clearance between tappet and valve end. In the manual it says "the valves of the other cylinder will be 'rocking' "(page 4 under Tappet Adjustment). What does this mean? The valves of the other cylinder are open. Help appreciated, thanks, Paul

Jonathan Hewitt

Hi Paul, with the one piston on TDC ready to start its power stroke, ( your RH cylinder ) the other piston will have just finished its exhaust stroke so the exhaust valve will be closing and at the same time the inlet valve will be opening, this is the point known as being on the rock.
Jonathan

Pallijen15