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).
Supply and fitting of Bentley pistons and their impact on oil consumption.
| Identifier | ExFiles\Box 131\2\ scan0059 | |
| Date | 21th September 1937 | |
| By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} 1113 Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}17/N.21.9.37. Re: Bentley Pistons & Oil Consumption. ------------------------------------ The question of the supply of pistons to Depots has again arisen. You will remember my conversation with you regarding the latest type piston being sent to the Depots when replacements are necessary. Kingsbury have had one batch of the old type, then the next batch are the latest type. Now the latest type piston seems to be standard. In dealing with the cars where the modified oil pump is fitted, the Kingsbury Depot have had to plug up the lubricating hole in the con rod, and in some cases fit the high pressure scraper ring to obtain good oil consumption. The question arises that if the tight fitting skirt piston is fitted, the rods must not be stopped up. Is it possible to let Kingsbury know whether the supply of pistons from now onwards will have the tight fitting skirt or not, so that they will have some data to work on. We do not want to stop up the rod, if later, a tight fitting skirt piston will be fitted. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||