The first issue of the new American Auto Sportsman contained an article on the secrets of the Mercedes-Benz racing department, where they claimed to have taken the first photographs in 20 years. Facts about the 300SL, revealed in this feature by Kurt Wörner are that in spite of o.h. camshaft valve gear the valves are vertical, closed by springs of 144 lb. pressure, the seven main bearing caps are dowel located and the undershield is sound-proofed and secured with aircraft fasteners. But no output figures were given. Mercedes acknowledged building ten 300 SLs, and it is thought that nine more may have been constructed.
COMPARISONS ARE . . .
Auto Course last month carried an article on the new Sunbeam Alpine, in which the winning G.P. Sunbeam of 1923 was recalled, the statement being made that the new car is probably faster than this old G.P. car Segrave drove to victory. This may he true of the special version Rootes used for record-breaking, as one would expect after 30 years' progress, but not of the normal model, for the 2,267-c.c. engine gives 80 b.h.p. at 4,200 r.p.m. whereas the Bertaroine G.P. 2-litre engine developed over 100 b.h.p., and while the racing Sunbeam cannot have weighed more than 19 cwt. today's sports version scales at 26 1/2-cwt. Verb sap.
Latest lubrication chart to be added to the Castrol library covers the Singer SM 1500. Copies of this chart, covering 22 in. by 17 in., may be had free on application to C. C. Wakefield & Co., Ltd., Grosvenor Street, London, W.1.
NEW AUSTIN SEVEN
There is now a lubrication chart for the Austin A30. It has been published by the Castrol Company, and copies, measuring 22 in. by 17 in. are available free on inquest to C. C. Wakefield & Co., Ltd., Grosvenor Street, London. W.1.
FREE AND EXCELLENT.
Shell-Mex •nd B.P. Ltd. have published four miniature guide books - Lontion, Royal London, London Art Treasures, and Oxford University. Each contains 20 pages, principally of photographs. They may be obtained free on written request from Shell-Megx and B.P. Ltd. (Touring Service), Shell-Mex House, Strand, London, W.C.2.