1925 Sunbeam 3½hp Model 3, Frame no. 17413 Engine no. 159/17026
Lot 9
1925 Sunbeam 3½hp Model 3 Frame no. 17413 Engine no. 159/17026
Sold for £7,762 (US$ 12,459) inc. premium

Lot Details
1925 Sunbeam 3½hp Model 3, Frame no. 17413 Engine no. 159/17026
1925 Sunbeam 3½hp Model 3
Registration no. BF 5774
Frame no. 17413
Engine no. 159/17026
Already established as makers of high-quality bicycles, the Wolverhampton-based firm of John Marston Ltd introduced the first Sunbeam motorcycle, a 350cc sidevalve single, in 1912. The marque quickly established a reputation for sporting prowess, achieving second place in the 1914 Isle of Man Senior TT and winning the 1920 race. Overhead-valve engines were introduced in the mid 1920s but early successes were achieved with sidevalve machines, most notably the famous 77x105.5mm 492cc 'Longstroke' that secured a debut win at the 1921 French Grand Prix in the hands of Alec Bennett. In road-going form this remarkable engine remained in production right up until WW2. Manufactured under a variety of model names, the Longstroke had gained drum brakes by the mid-1920s and in lightweight guise with low handlebars and reduced equipment was known as the 'Model 6' or 'Model 5 Light Tourist' after 1926. An ideal 'Banbury' bike, this Model 3 Longstroke benefits from a 'last nut and bolt' restoration completed in 2011. Works undertaken include an engine rebuild, repainting and re-plating the cycle parts, rebuilding the wheels and rewinding the EIC magneto. Ridden since completion and described as in generally good condition, this high-quality Vintage tourer is offered with VMCC dating certificate, current road fund licence and Swansea V5C registration document.

Saleroom notices

  • Please note the images in the printed catalogue are not for this lot. Please refer to the online images only. It has not been possible to positively identify the exact model of this machine. The frame is correct for 1925. The vendor confirms that the engine is of the Longstroke (77x102mm) pattern, a much more rideable engine than the original Model 3 and is believed to be of 1923 manufacture – a most desirable combination. Close inspection advised.
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