She was noted for being the first woman to compete in a TT race for solo motorcycles on the
Isle of Man TT course, a rare occurrence to this day on one of the world's most famous races held on closed public roads. This 1962 upset led the male-dominated world of motorcycle racing to revoke her international licence via the introduction of a minimum weight limit which she could not meet, due to the perception of the sport being too dangerous for women, and the resulting ban on female entrants persisted until
Hilary Musson competed in 1978. Swain finished 22nd on a
50 cc race-prepared
Itom after two laps of the
Mountain circuit in the
1962 Race. Her average speed was 48.3 mph after her bike lost top gear (of the three-speed transmission) on the second lap. This was the first time a 50cc event had been included in the Island's programme as from 1962 the class carried World Championship points. ==Motorcycle Grand Prix results==