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).
Laboratory report on the analysis of a failed 25 HP piston.
| Identifier | ExFiles\Box 82\1\ scan0061 | |
| Date | 27th March 1933 | |
| To E.{Mr Elliott - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} XJS.S'3W HL1/AG.27.3.33. Laboratory. Report No.L2656. RE - FAILED 25 HP. PISTON. Analysis showed this to be similar to the old crankcase alloy, containing about 10% Zinc and 2% Copper. It is unsuitable for use as piston material. RECEIVED MAR 27 H1. | ||