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).
Requesting a set of 'Perfect Circle' piston rings for a Phantom engine, with a preference for a 45° joint.
| Identifier | ExFiles\Box 15\3\ Scan022 | |
| Date | 31th August 1928 | |
| 47040 To H.H.C. from Hs{Lord Ernest Hives - Chair}/Rn{Mr Robinson}7 Hs{Lord Ernest Hives - Chair}/Rn{Mr Robinson}7/LG31.8.28. PISTON RINGS. We want to try a set ( 1 ring/piston) of Perfect Circle rings on the Phantom modified according to present practice on F.{Mr Friese} engines. Will you therefore please supply a set as per sketch. We presume you will modify F.76612. We prefer the 45° joint to the radial one. .035 Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||