1970 BSA Rocket 3,
Lot 501
1971 BSA 740cc Rocket III Frame no. PC00633 A75R Engine no. PC00633 A75R
Sold for £4,830 (US$ 7,557) inc. premium

Lot Details
1970 BSA Rocket 3,
1971 BSA 740cc Rocket III
Frame no. PC00633 A75R
Engine no. PC00633 A75R
Essentially a 'Tiger-and-a-half', the Triumph and BSA 750cc Triples were launched in the UK in 1969. Differences between the Triumph Trident and BSA Rocket III were more than just cosmetic: the two models used different frames and in BSA guise the motor's cylinder block was slightly inclined. BSA-Triumph had learned a lot about engine development from racing the 500 twins, and the Triples were the most powerful machines in their class. Dynamometer tested by the American publication Motorcycle Buyer's Guide in 1970, the Rocket III produced a maximum of 55.4bhp at the rear wheel, slightly down on its Triumph Trident sibling's 58.8 horsepower but 1.5bhp better than Honda's four-cylinder CB750. Meanwhile, back in the UK, Bike magazine wound their road test Rocket III up to a top speed of 128mph.

Only the Trident survived the BSA-Triumph Group's collapse in 1972, continuing as the T150V (with five-speed gearbox) and later the heavily revised T160 (using the BSA-type engine). The number of important production race victories achieved (notably by the works Triumph known as 'Slippery Sam') is eloquent testimony to how effective a high-speed road-burner a well-fettled Triple can be. Today the models enjoy an enthusiastic following worldwide and are supported by numerous recognised specialists and a first rate owners' club – the TR3OC – whose annual Beezumph Rally is highly recommended.

The unregistered Rocket III offered here was purchased by the current vendor in 1990 from All States Motorcycles, Reading, which had recently imported it from the USA. The vendor then restored the machine, completing the task in 1996, and describes the frame and cycle parts as in original 'showroom' condition and the engine and transmission as in good working order. No further work has been done since the rebuild's completion. Offered without reserve, the machine comes with State of Missouri Certificate of Title, 1990 bill of sale, and C&E Form 386 confirming import duties paid. A Triumph Trident air filter is the only notified deviation from factory specification.
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