AJS 1916 4½hp 550cc 2 cyl sv 2612



AJS    1916    550 cc  “ Model A”  4 HP  side valve  V-twin     frame& engine# 8058

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.
The company moved to new premises at Graisely House, Wolverhampton.
The 1916 range consisted out of three models; the sporty  2 ¾ HP single, the  medium weight 4 HP ( 550 cc) twin  model  A  and as top of the range the 6 HP model D. 
A new feature on all 1915 models was the so called “AJS scientific frame”  with straight top tube sloping from head to seat lug, eliminating the use of bent tubes.
This gives the petrol tank a slightly wedged- shaped appearance. 
Brampton patent spring forks are used on both V-twin models.
Some other features are:  three speed countershaft gearbox, completely enclosed chains and internal expanding rear brake.
The Model A has bore x stroke of  65 x 83 mm and the cylinders are set at 50 degrees. 
The 1916 range was similar to the models brought out in 1915.
A British “Hill Bristol”  magneto takes care of the ignition: the renowned  Bosch device was not available anymore for British manufacturers.
This  charming machine is a nice older restoration.