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Lot 377: 1930 BSA 493cc Sloper

Sale of Collectors' Motorcycles, Bonhams & Butterfields (12 November 2005)

Introduced for the 1927 season, the influential Sloper started a trend which saw many of BSA’s competitors adopt inclined motors. The Sloper featured a trend-setting saddle tank that afforded a low seating position, and for 1930 gained chromium-plated brightwork and a new frame with forged steel spine. Models with the 493cc overhead-valve engine came with twin-port cylinder heads. For 1930 the Birmingham firm offered no fewer than 18 models, six of which had inclined engines. The Sloper range remained essentially vintage in character until its demise in 1935, by which time the line-up had shrunk to just two models: one overhead-valve, the other sidevalve, both of 595cc.

The vendor advises us that this example was in running condition when taken off the road.

Lot Details
Auction Sale of Collectors' Motorcycles
Bonhams & Butterfields, Petersen Museum, Los Angeles, CA
TypeMotorcycle
Lot Number377
Estimate$2500-$4000
Outcome SOLD
Hammer Price$2400
Hammer Price (inc premium)$2760
Year1930
Condition rating
Registration number
Mileage-
Chassis number
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Engine capacity (cc)
Engine - cylinders
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