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BSA A28, A29, A30

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Make Model

BSA A28 - A30-2

Year

1928 - 30

Engine

Two stroke, single cylinder 3-Port

Capacity

174 cc / 10.6 cub in.

Bore and Stroke

60 x 61.5 mm
Exhaust Single, stainless steel
Ignition Magneto
Battery 6V
Starting Slip on kick starter

Max Power

1.25 kW / 1.7 hp

Transmission 

2-Speed

Final Drive

Chain

Clutch

Dry clutch

Frame

duplex

Seat height

Upwards adjustable from 711 mm / 28 in. lowest setting
Front Suspension Single spring girder fork
Rear Suspension None, spring loaded saddle

Front Tyre

2.375 x 24

Rear Tyre

2.75 x 24

Front Brakes

None

Rear Brakes

Hand lever and foot pedal working independently on rear wheel dummy rim, drum, internal expandable

The model description in the catalogue is very promising indeed: “ It’s a  machine that anyone can learn to ride in a few minutes, and ride with confidence, because it is so light, comfortable and easy to handle. The two stroke engine is easy to start and very economical to run.

This machine is fully capable of doing long distance journeys at a good average speed and  it is backed  by the B.S.A. reputation for consistent  reliability.” 

Introduced for the 1928 season, the A28 was BSA's first production two-stroke.

In terms of its specification, the little BSA was a cut above the (predominantly) Villiers-engined opposition, boasting unitary construction of the engine/two-speed transmission, a dry clutch and primary drive by gears. The engine/gearbox unit was carried in a bolted-up duplex frame and there were two brakes, both of which operated on the rear wheel. Priced at £28 10s, the A28 comfortably undercut BSA's cheapest four-stroke model, the 249cc B28 De Luxe, which cost a comparatively hefty £37 15s.

 

 

 

 

 


Any corrections or more information on these motorcycles will be kindly appreciated.
 
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