A virtual tour of the classic motorcycle collection on display at the Barber Vintage Motorsports Museum in Leeds, Ala.
1954 BSA B34 “Alloy Clipper”
Country: Great Britain
Engine: Air-cooled single-cylinder 4-stroke
Ignition: Lucas magneto with manual spark control
Power Rating: 28hp @ 5,500rpm
Bore x Stroke: 85mm x 88mm
Valves: Overhead, pushrod activated
Fuel System: Single Amal Monobloc carburetor
Suspension: Front telescopic forks, rear twin shock
Brakes: Front and rear drum
Top Speed: 70mph
Sold in the U.S. for trail or enduro use, the Alloy Clipper is often mistaken for a Gold Star, but is an export version of the B34 observed trials machine. The alloy cylinder and cylinder head are of the small fin style from the earlier ZB model, used to reduce weight. The modest power that this motor produces doesn’t require a lot of cooling fins.