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 oil grooving specifications for Bentley Main Bearings.
| Identifier | ExFiles\Box 85\5\ scan0033 | |
| Date | 24th May 1933 | |
| X217. To BT.{Capt. J. S. Burt - Engineer} from E/JNR.{Charles L. Jenner} E/JNR.{Charles L. Jenner}8/HP.24.5.33. c. Hs.{Lord Ernest Hives - Chair} re Bentley Main Bearings. We send you herewith: LeC.3503, showing the oil grooving to the bearings, similar to the 20-HP. - that is - front, central and rear have continuous oil grooves, and the intermediates having no grooves. E/JNR.{Charles L. Jenner} | ||