Triumph 1916 549 cc Model H frame # 5546MS engine # 42571 RTP
The model H is announced late in 1914 as a logical development of the famous veteran “ Trusty”.
But it isn’t just a 1914 model with a countershaft gearbox: the engine differs from the veteran engine in various ways.
It has a single cam wheel with 2 cams instead of separate cam wheels for the inlet and exhaust valve.
The casting for the cylinder is entirely new, the valve head diameter is enlarged by ¼ inch and the valves are spaced further apart.
A great improvement over the 1914 style 3-speed hub is the Sturmey Archer countershaft gearbox.
The primary chain drive is enclosed by a neat aluminium cover; secondary drive is by belt.
The model H becomes a very successful model: some 30,000 are supplied to the British and allied forces during the War; total production till 1923 amounts to a grand total of 57,000.
This matured and venerable H, assembled in February 1916, is utterly reliable, full of character and a pleasure to ride; what more can you want from a vintage machine?