The overhead cam 350 cc Velocette engine came into being in 1925, and within twelve months had won it's first Junior TT, fitted in a new frame designated KSS. The effect of the win made the machine so popular and demand so phenomenal that Velocette had to invest in a new factory to keep pace. Situated at Hall Green, the Birmingham facility then became the home of Velocette for many years to follow. K series engines were produced here at the rate of around 1000 a year until the thirties depression so affected sales of luxury and performance bikes that the company had to refocus efforts on the less expensive 2 stroke and overhead valve powered roadsters. Over the years these GTP (2 stroke) and MAC (ohv) machines became almost equal in performance to the 'cammy' models which had to be upgraded to Mk2 form in 1935 to maintain the performance edge. Always expensive to manufacture and not easy to maintain the KTS (touring) and KSS (sporting) versions continued in production subsidised by sales of the less expensive models, but giving the company a broader range of products to offer the public.
This unregistered Velocette KSS 350 OHC is one of the last Mk 1's and was discovered in Wales in 2010. A 1934 model it looks to be in pristine condition and has been subjected to a comprehensive restoration over the last two years, having many new parts fitted including piston, oil pump etc. and is stated to be in good running order. The vendor reports that the machine is all good and a competition gearbox has been fitted which is stamped with the original identifying numbers. This historic motorcycle is recorded to have been sold by distributors Vic Challenor Motorcycles of Stoke to first owner Mr W.S.Platt of Burslem. It would seem an ideal opportunity for a new owner to experience the joys of vintage motorcycling on a most excellent product of the pre-war British Motorcycle Industry.