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 discussing the suitability of Hypoid gear oil for an axle, following a customer's complaint about noise.
| Identifier | ExFiles\Box 89\4\ scan0358 | |
| Date | 21th October 1938 | |
| on a Hypoid Gear Oil & that they know all about Wakefield's Hi-Press, but they don't agree with it, as they say it is out of date for Hypoid diffs. Now having had so much trouble with the axle, & when Kingsbury have put it right I want to be sure the oil is the best possible for this type of axle. I should like to know if there is any reason why a Hypoid gear oil should not be used, if the oil is changed every 5,000 Miles, as we all know Hypoid oil must not be left in too long. Yours faithfully N.Y. Franklin RM{William Robotham - Chief Engineer} / Gry.{Shadwell Grylls} Present owner bought this car 2nd-hand in August this year, the mileage then being about 20,000. Has since complained twice to Kingsbury of a noisy rear axle on the overrun. Will you please reply, in view of owner's remarks re Wakefield's Hi-Press, & let us have a copy of your letter. [STAMP] RECEIVED 21 OCT Hd.{Mr Hayward/Mr Huddy} | ||