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).
Anodic oxidation of RR.53 pistons and the durability of American anodic coatings.
| Identifier | ExFiles\Box 87\2\ scan0007 | |
| Date | 18th January 1935 | |
| 4236? To H.L. (Laboratory). c. to Wor.{Arthur Wormald - General Works Manager} c. to By.{R.W. Bailey - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} 9/KW.18.1.35. Re Anodic Oxidation of RR.53 Pistons. Replying to H.L.1/AG. 3.1.35. We hope to have the opportunity of looking at the Cadillac pistons in the immediate future, and these should tell us a great deal as to the durability of the American anodic coat when applied to their low expansion alloys. If the coat appears to have lasted for 20,000 miles, then we may reasonably hope to get the same results. If, on the other hand, it has worn off, then the Americans apparently are using this coating only for getting an initial bedding on the pistons. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||