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Lot 441: 1930 Sunbeam 348cc Model 8

Collectors' Motorcycles, Bonhams (16 October 2005)

Sunbeam introduced overhead-valve engines in the mid-1920s having established its sporting credentials with sidevalve machines. Subsequent changes to the overhead-valve engine were confined mainly to its top-end. The early flat-tankers featured a straight-ahead exhaust port, a peculiarity which necessitated the adoption of a bifurcated down-tube, then later on in the 1920s Sunbeam followed the then-fashionable trend to twin-port ’heads before reverting to a single-port design in 1934. Push-rod enclosure had arrived by 1930 to be followed a couple of years later by partial enclosure of the rocker gear. Owned by the vendor since 1992, this Model 8 is preserved in highly original condition and presented in good order throughout. Benefiting from a recent re-wire, the machine comes with a new-old-stock Sunbeam piston (+0.020”). Offered with old-style Swansea V5 (pre-V5C) registration document, the machine is expected to be freshly MoT’d and taxed at time of sale.

Lot Details
Auction Collectors' Motorcycles
Bonhams, Classic & Motorcycle Mechanics Show, Stafford
TypeMotorcycle
Lot Number441
Estimate£3200-£3500
Outcome SOLD
Hammer Price£3800
Hammer Price (inc premium)£4370
Year1930
Condition rating
Registration number
Mileage-
Chassis number
Engine numberK3129
Engine capacity (cc)
Engine - cylinders
Number of doors