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 R.C. Hughes of Humber Ltd. requesting an opinion on the De Normanville overdrive.
| Identifier | ExFiles\Box 126\2\ scan0095 | |
| Date | 4th February 1939 | |
| 1069 Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}4/MH.{M. Huckerby} 4th. February, 1939. R.C.Hughes, Esq., Messrs. Humber Ltd., COVENTRY. Dear Hughes, Very many thanks for your assistance about our helical reverse gear. It is greatly appreciated. May I ask a question about another matter. What do you think of the De Normanville overdrive as regards operation, reliability and stresses on the rest of the chassis? I understand you did a lot of development work on it. If you would rather not answer this one for "political" reasons, just say so. Apologies for wasting your time, Yours sincerely, | ||