Sunbeam 1930 Model 9 500cc 1 cyl ohv 2611



Sunbeam  1930  Model 9     493 cc OHV  frame #  7486  engine #  LL 4620

The first OHV production  Sunbeams were listed as the model 8 (350cc) and 9 (500cc) in 1924.
The model 8 with bore/stroke dimensions of 70×90 mm was an excellent sporty  tourer, but stayed  somewhat in the shadow of its  more glamorous big brother, the 80×98 mm Model 9, which stayed in production till 1939.
From 1932 on a 600 cc version  ( Model 9A) was marketed , with engine dimensions of 88×98 mm, giving 599 cc.
For model year 1929 the appearance of Sunbeam machines changed completely because the firm had finally decided to adopt  a saddle tank.
Apart from that  an entirely new frame was designed.
Further refinements were enclosed pushrods and  valve gear on the OHV units.
The clutch was also modernised, it got six springs instead of the single central spring that was used in previous years.
Because of this 1929 update there were hardly any changes in specifications for 1930.
This well-sorted  two-port touring machine  comes complete with Lucas electrics and steering damper.