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).
Endurance test results defining diametrical clearances for Large Bore Bentley solid metal bearings.
| Identifier | ExFiles\Box 115\1\ scan0018 | |
| Date | 18th February 1936 | |
| To By.{R.W. Bailey - Chief Engineer} c. to E.{Mr Elliott - Chief Engineer} c. to Mx.{John H Maddocks - Chief Proving Officer} X1020 Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}14/KW.18.2.36. Large Bore Bentley. Endurance tests carried out on the above units with Hall's solid metal bearings have shewn that the following diametrical clearances give satisfactory results - Big end bearings to have a clearance of .00175 + 1/2 limit. Main bearings to have a clearance of .00275 + 1/2 limit. The details of the bearings and the crank should come within the above limits in the specification for production. White Metal Hs{Lord Ernest Hives - Chair}/L.H.Swindall. Big Ends As above Mains 1/2 less clearance than above. | ||