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 87\2\ scan0061 | |
| Date | 2nd May 1935 | |
| Copy for wt files x236 To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from RHC.{R. H. Coverley - Production Engineer} c. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} c. Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies} from RHC.{R. H. Coverley - Production Engineer}5/ETM2.5.35. 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. 18 1/2 oz. 1 - Piston set of Rings .109 " 1 - Gudgeon Pin .281 " 2 - Spacing Washers .093 " 1.639 = 1 Lb. 10.2 Oz. RHC.{R. H. Coverley - Production Engineer} | ||