Triumph Tigress/BSA Sunbeam

The Triumph Tigress, also sold as the BSA Sunbeam, was a scooter designed to have good performance and handling for the motorcycle enthusiast.

The 250 cc model would have a cruising speed of 55 to 60 mph (89 to 97 km/h) and petrol consumption of 120 miles per imperial gallon (2.4 L/100 km; 100 mpg‑US).

[2] The design by Edward Turner drew on Triumph's long experience of building fast motorcycles, and was sold under two brand names to take advantage of established distribution networks.

The two-stroke was a development of the BSA Bantam engine but the four-stroke was a completely new parallel-twin with gear rather than chain drive to the gearbox.

[3] The only problem was build quality: it was sometimes said that a Tigress was a joy to own so long as someone else was paying the repair bills.