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).
Weights of piston components for the 3.500 ball engine.
| Identifier | ExFiles\Box 88\3\ scan0163 | |
| Date | 2nd May 1935 | |
| C O P Y. x258 To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from RHC.{R. H. Coverley - Production Engineer} c. to Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} c. to Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies} RHC{R. H. Coverley - Production Engineer}/ETM.2.5.35. Bentley Weights. We give below the weights of piston details used in connection with the 3.500 ball engine :- 1 - Aerolite Piston (base) 1.156 lbs. 1 - Piston set & Rings .109 " 1 - Gudgeon Pin .281 " 2 - Spacing Washers .093 " RHC.{R. H. Coverley - Production Engineer} | ||