Description
This motorcycle is Lot 116 to be auctioned by Bonhams at The Autumn Stafford Sale (The Classic Motorcycle Mechanics Show) on 12 & 13 October, please see the Bonhams website for full details.
Auction Timings:
Lots 1 - 176 are to be sold from 11:00 on Saturday 12th October 2024.
Lots 201 - 429 are to be sold from 11:00 on Sunday 13th October 2024.
Public Viewing:
Available 12th & 13th October 2024 from 09:00 until 17:00, at The Stafford County Showground (The Classic Motorcycle Mechanics Show).
Lot 116
c. 1950 BSA 348cc ZM33 Racing Motorcycle
Registration no. not registered
Frame no. none visible
Engine no. ZM33. 4032.
This handsome Historic racing 'special' appears to consist of a BSA ZM33 499cc engine dating from circa 1950 in a later BSA duplex swinging-arm frame. However, it should be noted that the primary drive cover has a riveted-on plate, required for historic/ classic racing, showing engine dimensions of 71x88mm bore/ stroke, meaning that the unit is in fact a '350' (the engine crankcases and crankshaft assemblies are basically the same for both engine capacities). Other notable features include an Amal GP carburettor, alloy wheel rims, alloy engine plates, Koni shock absorbers, Smiths Chronometric 8, 000rpm rev counter, megaphone silencer, and a large ducted and vented front brake. There is no racing history with the machine and it is not known when it was acquired or last used. Careful recommissioning, or possibly more extensive restoration, will be required before it is fit to return to the racetrack and thus the machine is sold strictly as viewed. There are no documents of any kind with this Lot.
All lots are sold 'as is/ where is' and Bidders must satisfy themselves as to the provenance, condition, age, completeness and originality prior to bidding. Visit the Bonhams Motorcycles website for all pertinent auction information.
