Here Is Some Information On The 150cc - 250cc Bikes
T15 Terrier 1953-56, 149cc, ohv single, 180lbs, 105mpg, 50mph
In the fifties this was the first unit construction single with a four speed gearbox. Quite advanced for the time but let down by poor materials. Formed the basis for the later, more popular Tiger Cub. The chassis was built down to a price.
T20 Tiger Cub 1954-65, 199cc, ohv single, 230lb, 85mpg, 65mph
Developed from the Terrier the Tiger Cub was a great learner bike. Suffered from wiring problems, poor brakes and big end problems. 1957 saw the swinging arm frame come in which had graced the bigger bikes in 1955.
T20 Bantam Cub 1966-1969, 199cc, ohv single, 230lb, 100mpg, 65mph
In 1965 the Cub engine fitted into BSA Bantam frame and tank. This was named the Bantam Cub, and gave improved handling.
T20 Super Cub 1967-1969, 199cc, ohv single, 230lb, 100mpg, 65mph
Basically a Bantam Cub, but with modified brakes and fittings, selling alongside the Bantam Cub.
TS1 Tigress 1958-1965, 172cc, 2-stroke, 236lb, 90mpg, 55mph
Introduced to compete with the prevailing Italian threat, this was based upon the trusted BSA Bantam engine.
TW2/S Tigress 1958-1965, 249cc, ohv twin, 236lb
Basically the same as the TS1 Tigress, but fitted with a 250cc Twin Four-stroke engine, the S model having electric start.
T10 Tina 1962-1970, 100cc, 2-stroke, 143lb, 100mpg, 45mph
Introduced to compete with the Japanese C50/90 step through model which were so successful. A new engine was designed and modified by Bert Hopwood with an automatic transmission based upon the centrifugal force of large ball bearings acting upon the vee drive belt, which in the main performed well, but could jam at fully open. Initially named the Tina it was revised in 1965 and named the T10.
Street scrambler based on the BSA B25. A good practical bike which is fun to ride and has reasonable performance for it’s size. Good handling and braking (in post ’69 bikes which had a TLS front drum) were its main attributes but let down by exploding gearboxes, weak con-rod and big-end.