1934 S.O.S. 250cc Model E.W. 'Villiers Water-Cooled'

"Vale-Onslow's motorcycles were considered to be more exclusive and of higher quality than the stock Villiers powered bikes so common in the 1930s." – Mick Walker, Villiers.

Founded in Hallow, Worcestershire by Len Vale-Onslow, S.O.S. (Super Onslow Special, later So Obviously Superior) is best remembered for its stylish two-strokes of the 1930s. The company offered JAP-powered four-strokes at the beginning of the decade but these were soon dropped and production relocated to Birmingham in 1932. The following year Onslow introduced the first of the models that would forge the marque's reputation, a Villiers-based two-stroke fitted with S.O.S.'s own water-cooled twin-port cylinder barrel and detachable 'head. According to their maker, these were 'Magnificent all-weather, mile-a-minute machines which have not lost their sporting appearance, appeal or performance.' S.O.S.'s range of up-market 'strokers' was steadily expanded and continued in production under its new owner - Brooklands racer turned motorcycle dealer Tommy Meeten - until 1939.

The 'RY' engine prefix indicates that this E.W. example is most likely fitted with a Villiers 14A 250cc water-cooled unit. Originally supplied overseas, the machine was first registered in the UK on 1st August 2022. It was acquired at auction by the late owner in 2024 and has not been used since purchase. The machine has been the subject of an older restoration by a former owner. The work is understood to have included the following:

Stainless steel rims and spokes
Professionally finished paintwork
Water-cooling system
Predominantly stainless steel fasteners
Rebuilt engine with new bearings and crankshaft lip seals
Mercury brake light switch
4-speed gearbox
12-volt electronic ignition
T.G. Meeten 'Shannon Corner' tyre inflator

It is offered with the following:

• V5C document
• 1933 Motor Cycling photocopy article on the marque
• 2024 auction purchase invoice
• Albion gearbox information
• 2022 British Two-Stroke Club dating certificate
• Photocopy Villiers spare and replacement parts list
• Pre-restoration image
• Rebuild notes (date unknown)
• S.O.S. Model brochure
• S.O.S. pin badge

Following a period of inactivity, this motorcycle will require recommissioning and/or restoration to a greater or lesser extent before returning to the road and thus is sold strictly as viewed (the engine turns over). Prospective purchasers should satisfy themselves with regard to this motorcycle's completeness, history, authenticity, originality and mechanical condition prior to bidding.
Key not required