Lot 272 - 1953 Tri-B.S.A Special
|Estimate||£2,000 - £4,000|
The Tribsa, or Tri-B.S.A was a custom built cafe racer or off road motorcycle of the 1960s and 1970s. Its name was an elision of 'Triumph' and 'BSA' and the purpose was to combine the best elements of each marque to give a superior bike to either. A Tribsa involved a Triumph parallel twin engine installed in BSA motorcycle frame. Although both the BSA A65 and the Triumph 650 twins engines were overhead valve units, only the Triumph had twin camshafts which facilitated tuning for greater power output. The BSA frame was a duplex-cradle design which was considered stiffer and stronger than the Triumph's single downtube item hence the best of both.nA Tribsa was built experimentally at Meriden by Triumph in 1973 using surplus BSA A65 frames which led to a 'factory Tribsa' which was to use the BSA A65 frames with the 650cc TR6 engine. Not many of these hybrids were produced and factory records are vague.
This TriBSA has BSA frame, forks, wheels, Gold Star Catalina petrol tank, alloy oil tank with Triumph T100 and an all aluminium engine running through a Norton AMC gearbox and clutch. This period vintage racer circa 1953 is not only a rare find but a rare opportunity to collect a piece of Triumph and BSA history.
Interested parties should satisfy themselves as to the description and condition of each lot prior to the sale. Buyers are advised to inspect the car in person or use a professional to carry out this service.