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 ball thrust bearings for the high-speed Goshawk II engine.
| Identifier | WestWitteringFiles\G\October1921\ Scan80 | |
| Date | 26th October 1921 | |
| To HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} Copy to CJ. [struck through] " " WOR.{Arthur Wormald - General Works Manager} [struck through] " " RG.{Mr Rowledge} [struck through] " " EP.{G. Eric Platford - Chief Quality Engineer} [struck through] " " BY.{R.W. Bailey - Chief Engineer} [struck through] ORIGINAL. [stamped] X 3550 [handwritten] RE "GOSHAWK II" - THRUST BEARING. RECEIVED [stamped] [Inner circular stamp: OCT 28 1921] 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} | ||