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 Adamant Engineering Company regarding the selection of a suitable steering gear for a Bentley car, discussing different gear types and referencing drawings.
| Identifier | ExFiles\Box 28\2\ Scan175 | |
| Date | 2nd May 1933 | |
| X4094 Telegrams: "ADAMANT, Phone, Luton." CONTRACTORS TO H.M. ADMIRALTY, WAR OFFICE & AIR MINISTRY. Telephone: LUTON 1818 (2 Lines). ADAMANT ENGINEERING COMPANY, LIMITED (Incorporating J.{Mr Johnson W.M.} C. TREADGOLD & SONS. Established 1878.) Engineers and Founders. SPECIALISTS in the DESIGN and MANUFACTURE of HIGH PRECISION TOOLS, JIGS, FIXTURES, etc. SPECIAL MACHINES, SPECIAL MACHINE TOOLS, and ACCURATE PRODUCTION WORK. SOLE MANUFACTURERS and SALES AGENTS for the MARLES and MARLES-WELLER STEERING GEARS. Directors: S. CARLTON SMITH, A.M.I.MECH.E., M.I.P.E. ENGR. LT.-COMMANDER F.{Mr Friese} G.{Mr Griffiths - Chief Accountant / Mr Gnapp} MATRAVERS, R.N., M.A. (CANTAB), A.M.I.MECH.E., A.M.I.E.E., M.I.A.E., M.I.P.E. O.{Mr Oldham} CARLTON SMITH, M.A. (CANTAB), F.I.S.A., M.I.P.E., Secretary. ALFRED SLATTER, M.I.E.E. J.{Mr Johnson W.M.} W. HAZEL, F.I.S.A. Your Refs / Rm.{William Robotham - Chief Engineer}8 / KT Our Ref. FGM/AGS/CB. Head Offices, Works and Design Dept. : DALLOW ROAD, LUTON. 2nd. May, 1933. Messrs. Rolls-Royce Ltd., DERBY. Dear Sirs, We beg to thank you for your favor dated the 1st instant, together with the enclosed two drawings Nos.FB.151 and FB.61. We have duly noted the contents of your letter, which are quite clear to us, but you have omitted to state on the Bentley car you have in mind, what the front axle weight will approximate, although you have given us the weight of the car as 30 cwts. With the usual distribution of weight on a car, the total being 30 cwts. we think possibly the next smaller size of Steering to that which you have been experimenting with on your 40/50 Phantom may possibly be of interest to you. This is our "J" Type Steering, as shewn on the enclosed general arrangement drawing GA.2450. You will note that this gear is precisely the same in design as the larger "O" type Gear, being only a smaller edition of the same, and we would draw your attention to the 1" diameter Inner Tube and 1" diameter Rockershaft particularly, although we believe that with a 1" diameter tube your Controls will go through quite easily. As regards the matter of gear ratio, we have to say that this "J" Gear is being made with 2 standard ratios, one having - 1 - | ||