The 1933 threewheeler was a much improved car, a water cooled four cylinder 9 h.p. version being offered, with the same engine as the T.9, but with some changes. The body was also changed significantly together with new wings and longer bonnet. The Vee Twin models continued in production alongside the 4 cylinder version until 1936, and were mechanically unchanged to the end, with the exception of minor improvements.

BSA produced a bewildering variety of detail changes and no two BSA’s seen at a rally today are identical. The curve of the boat tail seems to have varied considerably, some being sharply pointed and others relatively rounded, and windscreen styles, whilst according to the brochure were of a fixed flat screen type or a split screen variety, could include “specials” ordered by the customer. In a 1930’s with economic recession, any detail which sold a car was available on request, it seems.

 

Whilst many cars were painted a single colour, two-tone paint designs were common and again varied. For some, the two-tone line followed the bonnet and boot lid sides, on others a sweeping line from the radiator filler to the lower point of the tail was followed. These two-tone schemes were very distinctive, and included black/ivory, green/black, red/black, dark grey/light grey and lilac/grey. The wings were generally stove-enamelled black and wheels were originally also black, although later a variety of colours were introduced.