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War-time Sunbeam motorcycles
Sir, I refer to the following item: "A 1916 Sunbeam motorcycle with a twin MAG engine, made for export to Russia, has turned up in the Midlands", which you published…
Brief Specification.
Brief Specification.
Engine : 6 cylinder, 57 x 83 mm. bore and stroke, capacity 1,271 c.c. Tax £12. 2 S. U. carburettors, battery and coil ignition.
Clutch : Single plate.
Gearbox : 4 speeds, central change. Ratios, 17.5, 10.5, 6.64, 4.89. Reverse 17.5. Suspension : Semi-elliptic front and rear, hydraulic shock absorbers. Brakes : Lockheed hydraulic type,
with 12 inch drums.
Steering : Worm and wheel.
Dimensions: Wheelbase 7′ 61″. Track 3′ 9″. Overall chassis length Hy 9r, overall chassis width 4′ 8°, road clearance 61-, turning circle 39N, chassis weight 10 owls. Tyre size 27″ x 4.75″. Tank capacity 5 gallons.
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