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 Overdrive Gears Ltd. regarding oil suitability for an overdrive gearbox and hydraulic operation.
| Identifier | ExFiles\Box 136\2\ scan0074 | |
| Date | 31th March 1939 | |
| 1153 PLEASE REPLY DIRECT TO "ORMIDALE" THE AVENUE, HATCH END, MIDDX. 'PHONE: HATCH END 1221 Overdrive Gears Ltd., DIRECTORS A.C.WICKMAN. WALTER JENKS. C.D.GAY. E.J. de NORMANVILLE. 76, VICTORIA STREET, LONDON, S.W.1. TELEPHONE AND TELEGRAMS VICTORIA 6291 EN/KA 31st March, 1939. S. H.{Arthur M. Hanbury - Head Complaints} Grylls, Esq., Messrs. Rolls-Royce Ltd., D E R B Y. Dear Mr. Grylls, I have been going into the question of an oil suitable for our Overdrive job, in any cases where it might be desired to use the same oil supply for the gearbox as for the Hydraulic operation. I was going into this matter with Mr. Chamberlain (Wakefield) and found that my impression did not coincide with his as to the viscosity of the oil you use in the ordinary way for gearbox lubrication. Would you kindly let me have information in this respect. I am expecting to be in The Midlands again just after the Easter recess and shall hope to run up to see you one day. Yours sincerely, OVERDRIVE GEARS LIMITED. Edgar de Normanville. Managing Director. | ||