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).
Modifications to the 'Condor' reduction gear, specifically replacing bearings and referencing drawing LeC.1008.
| Identifier | ExFiles\Box 38\6\ Scan095 | |
| Date | 10th October 1918 | |
| COPY. To DA.{Bernard Day - Chassis Design} C. to BY.{R.W. Bailey - Chief Engineer} " " EH. " " EFC. X.3389 10th Oct. 1918 SFP1/G1010181 RE "CONDOR" REDUCTION GEAR+ I send you herewith drawing No. LeC.1008 shewing the planets for the .666 Reduction Gear having roll or baerings replaced by ball bearings. To replace these bearings the planet cages will only require a very slight modification in the nature of removing the face in the housing of the rear half of planet cage, so that the bearing will be free endways, the planet wheel being located at the other end. I have given on the drawing some comparison figures between the "Eagle" planet pinion ball bearing and the bearing on the "Condor", which will be noticed vary very little. The oil retainer shewn on this drawing is the one which should be used for this gear if standardised, but for the experimental test the one shewn on LeC.1004 could be used. I have made a slight modification to the propellor shaft flange which is cut away to clear the bearing retaining washer, so thst this will now clear the inner race of the bearing. The above modification should be carried out on the gear already sent you. SFP. | ||