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 Bentley Semi-Split Piston to prevent seizing, due to oil shortage and incorrect clearance.
| Identifier | ExFiles\Box 86\2\ scan0075 | |
| Date | 10th October 1933 | |
| K236. To Hs.{Lord Ernest Hives - Chair} from E/JNR.{Charles L. Jenner} E/JNR{Charles L. Jenner}2/HP.10.10.33. c. RHC{R. H. Coverley - Production Engineer} <strikethrough>Hs{Lord Ernest Hives - Chair}/Mr Salt</strikethrough> Bentley Semi-Split Piston - LeC.3493. Owing to the seizing of one of these pistons, which we think is partly due to the shortage of oil and incorrect clearance between it and the cylinder, we think it is necessary to modify the shape of the eccentric grinding by extending it above the scraper groove. Another improvement is to cut away the skirts at the bottom of the cylinders on one side only, the side opposite the tappets. We send you herewith blueprint LeC.3667. Print to Hs{Lord Ernest Hives - Chair}/Mr Salt. E/JNR.{Charles L. Jenner} | ||