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 successful testing of a New Departure No. 306 rear axle bevel pinion thrust bearing.
| Identifier | ExFiles\Box 20\7\ Scan114 | |
| Date | 13th October 1925 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. BJ. c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} X3607 Hs{Lord Ernest Hives - Chair}3/LG13.10.25. 20 HP. REAR AXLE BEVEL PINION THRUST BEARING. X5350 9-G-111 car which recently ran 10,000 miles in France is fitted with a New Departure No. 306 bearing and bevel pinion thrust. The condition of this bearing at the end of the run was excellent. We have sent standardisation sheets round for signatures so that this bearing can be adopted. We have previously tried a small New Departure Bearings No. 207. This did not give as good results. Attached are comparative results taken with different thrust races on a test rig. Hs.{Lord Ernest Hives - Chair} | ||