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 positioning of 14mm spark plugs on a small plug Peregrine head.
| Identifier | ExFiles\Box 169\4\ img209 | |
| Date | 7th July 1932 | |
| RHC.{R. H. Coverley - Production Engineer} From Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}8/MA.7.7.32. SMALL PLUG PEREGRINE HEAD. We want to get the position of the 14 m.m. plug points on the small plug head, as near the same position as the points of the 18 m.m. plugs having .350 reach as possible. Will you please get what you can on the head and the plug, .400 is the ideal/aim at as they are that much further out at present. We want to run the altered head before it goes in the car. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||