AJS 1927 “4.98 HP Overhead Valve Model H 10 498 cc OHV single frame # 6056 engine# H89860
The four Stevens brothers had been in motorcycle manufacturing since the final years of the 19th century, but only in 1911 their first complete “AJS” motorcycle, a 298 cc two speeder, was marketed. For the 1912 season their first V- twin, the model D, was brought out.
In the 1914 Junior TT a magnificent first and second place was scored.
From 1925 on prefixes were used to the numbering system: E=1925, G=1926, H=1927 K= 1928.
The 500cc OHV model was introduced for the 1925 TT races; it made a big impression by making the fastest lap in history ( till then that is) at a speed of 68.97 mph.
It was first catalogued for the 1926 season as the Model G 8.
1927 was the last year of the “goalpost” setup to secure the cylinder & head to the crankcase.
New features for the year were among others a roller bearing supported crankshaft and a new Pilgrim mechanical oil pump with sight feed.
For 1927 eight models were catalogued, ranging from a 350 cc side valve to a 799 cc V- twin.
The H10 was the fastest pushrod ohv in the range, it was specially tuned and weighs only 250 lbs.
Bore and stroke dimensions are 84×90 mm, carburettor is racing type Binks with twist grip control.
This unrestored machine comes in fantastic authentic condition and is fitted with the optional 3 ½ gallon TT type tank.