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).
The unsuitability of ordinary ball thrust bearings for the Goshawk 11 engine at high speeds.
| Identifier | ExFiles\Box 20\7\ Scan090 | |
| Date | 26th October 1921 | |
| To Hs.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} c. to CJ. c. to Wor.{Arthur Wormald - General Works Manager} c. to Rg.{Mr Rowledge} c. to EP.{G. Eric Platford - Chief Quality Engineer} c. to BY.{R.W. Bailey - Chief Engineer} X3550 RS{Sir Henry Royce's Secretary}/F26.10.21. GOSHAWK 11. THRUST BEARING. X.3550 The high speed demonstration at Thetford convinced me that the ordinary type of ball thrust bearing is not suitable for the high speed now in vogue. We must now use deep groove journal, or something like "New Departure" or plain Michell type for all high speed work. R.{Sir Henry Royce} | ||