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1920
SUNBEAMS

 Model Range
The three model range from 1919 continued with minor variations to the 3½ h.p. models.

Cycle Parts
A new, Marston patented, leaf spring suspension was introduced for the front forks of the 3½ h.p. models along with a rear drum brake. The front wheel retained a bicycle-style stirrup brake.

The 3½ h.p 'Sporting Model' was differentiated by lower handlebars, footrests rather than footboards, and a higher compression engine.

Engine and Gearbox
The magneto drive cover takes on its traditional lozenge shape. The engine was given larger cooling fins.

Sources:
* Robert Cordon Champ, 1980, 'The Sunbeam Motorcycle'. Haynes Publishing.

 

  

 

T H E   Y E A R ' S   M O D E L S :  1 9 2 0  
3½ h.p. Standard model

 

  
3½ h.p. Sporting model - no photo  
8 h.p. (996cc) JAP v-twin model - no photo

 

  
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