The demand for a Sports oriented model Vincent introduced the Black Shadow . The model became so popular that the production of the Black Shadow exceeded the production numbers of the previous Rapide model. The Black Shadow was a "Stressed Frame" design. The engine, instead of being cradled in a set of frame rails, was suspended from above becoming an integral part of the structure. The Black Shadow as well as the other post Second World War Vincents featured several new technological innovations such as a unique and original alternative to the primitive telescopic front forks of the day, a sprung rear sub-frame, the extensive use of aluminium alloy and a unit construction stressed engine. It weighed in at a relatively light 458 lb which was about the weight of a pre-war 500 cc bike.
The reason for its name "Black" Shadow was due to the entire bike (including the engine) being coated with black paint. The reason for the black paint on the cylinder block is still disputed to this day. Some claim that the black paint was for looks, others claim that it had something to do with heat transfer and dissipation. Whatever the original reason behind the painting of the engine, it was very different from anything else at a time when everything was polished and chromed.
Fewer than 1,700 [2] Vincent Black Shadows were made, all hand-assembled . It is now highly prized by classic motorcycle collectors from around the world, and is valued in excess of £30,000 in today's market. In the 1960s Vincents were being sold for £100 to 3500 at then prices.
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