From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Letter from Automotive Products Company about brake drum rigidity and requesting an 11-inch drum for dynamometer testing.
| Identifier | ExFiles\Box 121\1\ scan0341 | |
| Date | 31th October 1940 | |
| AUTOMOTIVE PRODUCTS COMPANY LTD European Distributors & Spares Depots for- HERCULES ENGINES TIMKEN AXLES "LOCKHEED" HYDRAULIC BRAKES FULLER TRANSMISSIONS BORG & BECK CLUTCHES LAVINE STEERING GEARS "PUROLATOR" THE OIL FILTER THOMPSON ECCENTRIC TIE RODS G & K "AUTODUCT" LINK-V-BELTING (Logo: THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS) DIRECTORS: E B BOUGHTON, W EMMOTT, D T BROCK Tachbrook Road Leamington Spa TELEPHONE: LEAMINGTON SPA 1400 TELEGRAMS: AUTODUCTS, PHONE LEAMINGTON SPA REG OFFICE: BROCK HOUSE LANGHAM ST.{Capt. P. R. Strong} LONDON W.1 SCANDINAVIA: SVEAVAGEN 77, STOCKHOLM, SWEDEN CH/MF. 31st October, 1940. Messrs. Rolls-Royce, Limited., D E R B Y. Dear Sirs, For the attention of Mr. Robotham, In the course of tests, we find, as would be expected, that the rigidity of the brake drum is a very important factor in determining the pedal travel. This is particularly the case with two leading shoe brakes, in fact a drum which is quite satisfactory with ordinary brakes will show up very badly when two leading shoe brakes are fitted. This being the case, we suggest it is desirable that we carry out dynamometer tests with the actual drum to be used on the vehicle. This would eliminate one item which might give us trouble on the road. Would it therefore be possible for you to make and lend to us an 11" drum of the type you propose to use? We should also be glad if you would advise us when we may expect some castings from the Wheel Cylinder Pattern we sent you, and also when it would be convenient cont'd.... [Left Margin Text]: Quotations and Contracts are subject to revision of Duty, Transportation Costs, and to acceptance by the Factory, also to unforeseen events arising from strikes, lockouts, transportation, war &c., and [illegible]. | ||