24th Apr, 2014 13:30

Imperial War Museum Duxford

 
  Lot 30
 

1951 Vincent Black Shadow Series C

Sold for £83,250

(including buyers premium)


Lot details
Registration No: RFC 447
Frame No: RC8069B
Engine No: F10/AB/1B6169
cc: 1000
MOT Expiry Date: Exempt

Vincent HRD were in the happy position of producing the worlds fastest production motorcycle in the form of the Rapide, however and despite the Rapide's performance potential in standard form, the company was subjected to requests for a higher performance machine. Most enthusiasts looking at the specifications of the Rapide power unit recognised that it was endowed with a mild state of tune, if 45bhp and 110mph was available from an engine with a 6.45:1 compression ratio being fed by two comparatively small 1 1/16 carburettors imagine the results that a higher compression ratio and larger carburettors would bring. These thoughts were also held by Phil Vincent, who viewed a machine that was possessed with an abundance of power as being his ideal, allowing the rider to set the pace rather than being constrained by the machines limitations.With a chassis approaching his ideal already there to be exploited the production of his "ultimate" motorcycle was a realistic goal, unfortunately other members of the Stevenage hierarchy disagreed, arguing that sales of the proposed machine would be achieved at the expense of the Rapide. Fortunately for enthusiasts PCV was not one to let boardroom opposition stand in his way, he told the press of the imminent release of the new model and authorised the production of prototype machines which used the experience gained with "Gunga Din", Cliff and George Brown's race machine, to achieve the desired level of performance for the new machine, dubbed the Black Shadow.The increase in performance over the Rapide was achieved with a higher compression ratio of 7.3:1 and 1 1/8th carburettors. Ports were polished and the engine was effectively "blueprinted" at the production stage ensuring optimum performance. Stronger ribbed front drum brakes were employed which also offered a greater surface area for heat dissipation. A five inch 150mph speedometer graced the top of the forks and the engine cases, primary drive case, gearbox and magneto cowl were finished in a high gloss black enamel.In all other respects the Black Shadow shared it's cycle parts with the Rapide, initially being offered in Series B form with Brampton girder forks before evolving into the Series C fitted with Girdraulic forks and offered alongside the B series machines during 1948/49 before taking over completely from 1950. When tested the new model proved to be capable of 125mph and could stop from 30mph in 22 ½ feet.
The example offered was first registered on the 2nd April 1951 in the name of the well known Oxford dealers, Kings Motors, who subsequently sold the machine to a Mr Robert Stanley. Inexplicably he did not take delivery of the machine resulting in it being sold to the present owner on the 4th January 1952 by Kings Motors. Described by the vendor as being in very good, original condition throughout it is offered with a Swansea V5C and an earlier V5, original buff log book, a parts list, riders handbook, instruction book, various cables and a tyre pump together with a dating certificate.
 

All successful bids must be paid in full by midday the day after the auction at the latest.

You can collect your new pride and joy from our venue until 1pm the day following the sale or our partners are on hand to help arrange safe transportation:

               

Auction: Imperial War Museum Duxford, 24th Apr, 2014

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