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).
The modified grinding of E.84546 semi-split pistons for Spectre.
| Identifier | ExFiles\Box 87\2\ scan0026 | |
| Date | 20th March 1935 | |
| Hs{Lord Ernest Hives - Chair}/Mths.{Reg Matthews}13/KW.20.3.35. Modified Grinding of E.84546 Pistons. Attached is sketch B.V.81 showing the proposed grinding of E.84546 semi-split pistons for SpectreCodename for Phantom III in order to increase the bedding surface. These figures shown on the sketch of the gradual relief should we think approximate to those of the Aerolite No.10 Cam, but no doubt the Light Production Co. can verify this. The dimensions of course apply to the skirt before sawcutting. Hs{Lord Ernest Hives - Chair}/R.Matthews. | ||