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 replacement of roller bearings with ball bearings on the 'Condor' engine's epicyclic gear due to scoring.
| Identifier | ExFiles\Box 38\6\ Scan070 | |
| Date | 4th October 1918 | |
| To R.{Sir Henry Royce} from EH. c. to E.{Mr Elliott - Chief Engineer} c. to By.{R.W. Bailey - Chief Engineer} c. to CJ. EHL/LG4.10. 18. 4th Oct. 1918. X.3383.C. RE+ "CONDOR" ENGINE+ We have fitted Hoffmann Ball Bearings in place of the Roller Bearings to the "Condor" Epicyclic Gear. The Roller Bearings we took out, although they had only run for 2 or 3 hours - light running, shewed signs on the outer race of scoring. EH. | ||