Win a dashcam

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 70x90 mm was an excellent sporty tourer, but stayed somewhat in the shadow of its more glamorous big brother, the 80x98 mm Model 9, which stayed in production till 1939.  From 1932 on a 600 cc version  (Model 9A) was marketed , with engine dimensions of 88x98 mm, giving 599 cc.

New features for 1932 were:

• Sunbeam 4 speed gearbox
• a new fork
• revised brake
• a tank top panel which holds Smith clock and oil pressure gauge
• new rocker box - with feed pipe from the oil pump - with fully lubricated rocker gear.

The clutch is now operated with a quick thread on the front chain case, doing away with the typical Sunbeam bridge over the output sprocket. 
The 9A has 26 x 3.50 tyres, the Model 9 is  standard equipped with 26 x 3.25.