1963 GREEVES 250 Succession of Mr. X Type : 250 Frame... Lot 31

1963 GREEVES 250 Succession of Mr. X Type : 250 Frame n°24RCS13 Engine n°GRA5877 Bert Greeves' aim when he presented the Silverstone at the 1962 London Motor Show was to offer an economical racing motorcycle (4,000 F at the time) for the Junior formula. Thanks to Francis Beart's development skills, the prototype at the show went from 25 to more than 30 hp. The base, a Villiers engine type 36 A, had its lights reworked, the precompression ratio in the crankcase increased by filling it, while the diameter of the Amal GP carburettor increased from 31.7 to 35 mm. The exhaust was worked on and the ignition replaced by a battery/coil assembly, then by a Swedish Stefa flywheel. Due to a lack of tuning, the Silverstone reserved the best and the worst for its owners. Well prepared, it allowed, for example, G. Keith to remove the Manx GP Lightweight, but at the TT, out of 63 starters, only 8 finished! Each year brings its share of modifications: new front brake, full fairing, duplex primary drive train, new distribution diagram, etc.. But foreign competition was fierce and Bultaco TSS and other Yamaha TD1Cs, although much more expensive, condemn the Silverstone, whose ultimate 1968 version is increased to 350 cc without more success. We thank Mr François-Marie Dumas for his help concerning the general description of the model. Buyers are reminded that the entire collection consists of motorcycles that have remained static in the collector's private museum for several years. A discount in