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).
Suitability of Michell thrust bearings and recommending alternative 'deep race' or 'New Departure' types for high-speed use.
| Identifier | ExFiles\Box 49\2\ Scan041 | |
| Date | 27th October 1921 | |
| X4150 To BY. {R.W. Bailey - Chief Engineer} from R. {Sir Henry Royce} c. to CJ. c. to Hs. {Lord Ernest Hives - Chair} c. to E c. to Da. {Bernard Day - Chassis Design} c. to EP. {G. Eric Platford - Chief Quality Engineer} _ _ _ _ _ _ _ _ _ _ _ _ R2/G27.10.21. X.4150 - RE MICHELL THRUST BEARINGS. X.547. With reference to your memo. BY5/P25.10.21, I quite agree that these bearings are wonderful. Ordinary ball thrusts are not good for high speed. I am now recommending either "deep race" or "New Departure". Michell type depend so much on a good and constant supply of clear oil, which we cannot rely upon on a chassis, but I agree we must cease to use present standard for high speed. R. {Sir Henry Royce} | ||