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 to Rover requesting vehicle component weights and discussing engine torque.
| Identifier | ExFiles\Box 127\3\ scan0266 | |
| Date | 21th November 1938 | |
| 1091 Experimental Dept. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}3/MH.{M. Huckerby} 21st. November 1938. M.Wilks, Esq., The Rover Co. Ltd., New Meteor Works, COVENTRY. Dear Wilks, With regard to our telephone conversation about body weights, could you let us know (1) The weight of the Vauxhall body and integral frame including and excluding all 4 wings. (2) The weight of the 1939 Rover 12 complete sports body including and excluding wings. Are the dash and running boards part of this weight? Does it include the body mountings ? Are the wings alum or steel ? (3) Does the Vauxhall Starter really weigh 300 lbs. or the gearbox 287 ? (See your letter of Nov. 1st.) With regard to the piston torque on a two-cylinder 90° V engine, this can be got from the attached blue print by adding to the graph for one cylinder another at 90°. This gives a shape of roughly [Hand-drawn sine wave diagram with 0 and 360 marked at the start and end of the x-axis] i.e. a two per rev almost sine wave torque | ||