1921 ABC 400cc
Lot 373
1921 ABC 400cc
Sold for £4,830 (US$ 7,557) inc. premium

Lot Details
1921 ABC 400cc
Registration no. XL 4652
Frame no. 3051
Engine no. 3051
Built at Kingston-on-Thames by The Sopwith Aviation & Engineering Co. Ltd., Granville Bradshaw’s horizontally opposed twin was years ahead of its time and considered by some to be the inspiration behind later BMWs. The bike featured a fully sprung cradle frame, a car-type disc clutch and the lightweight steel cylinders reflected the aircraft manufacturing parentage. The horizontally opposed, twin cylinder, air-cooled engine featured overhead valves and had a bore and stroke of 69x54mm, displacing 398cc. The machine featured a four-speed, hand-change gearbox with chain final drive with leaf-spring suspension front and rear. A contemporary sales brochure claims of the ABC- ‘it calls for no technical skill ….. it keeps itself spruce and clean …… and ABC horsepower is obtained in the scientific way’ . The ABC was certainly technically way ahead of its time and is today much sought after by those seeking an early machine with a comfortable ride and a nimble turn of speed for vintage road runs.This machine is presented in maroon and black livery and is equipped with electric lighting, nickel-plated fittings, a hand klaxon and a Type MD2 magneto. It is recorded in the VMCC Register of Machines, however at the time of cataloguing, further history relating to this machine is not available. The registration documents have not been located and prospective purchasers are advised to check with the auction office at the sale regarding an update on availability of DVLA Swansea paperwork.

Saleroom notices

  • There are no documents with this machine and the DVLA have no record of this number. The bike is however recorded under this registration number in the VMCC Register of Machines.
Auction information

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