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).
Main bearing failures and requesting new sets for testing purposes.
| Identifier | ExFiles\Box 114\2\ scan0171 | |
| Date | 10th July 1935 | |
| To RHC.{R. H. Coverley - Production Engineer} +1020 HS{Lord Ernest Hives - Chair}/RM.{William Robotham - Chief Engineer} 7/KW.10. 7.35. Main Bearings. In view of the failure of the bearings on the endurance running on B-15 unit, will you please make us 2 sets of close clearance lead bronze main bearings, and 2 sets of Hall's type main bearings. With a view to establishing the minimum clearance at which the Hall's main bearings can be run, we should like you to prepare 2 big end and 2 main bearings having white metal clearances, which we will fit to the test rig unit at the completion of its present endurance run. With regard to the wide centres stud engines which you are at present building up, these will of course both have lead bronze big ends, but we should like one set of the main bearings to be in Hall's metal. HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||