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 chrome plating of tappets.
| Identifier | ExFiles\Box 127\3\ scan0046 | |
| Date | 1st May 1935 | |
| May 1st 1935. COPY OF REPORT ON CHROME PLATING OF ROLLS-ROYCE TAPPETS. MARK. THICKNESS OF PLATING. SUBSEQUENT TREATMENT. 1.-B ) .0005" approx. Polished only 2.-B ) " 3.-B ) .. .. .. .. 4.-B ) .. .. .. .. 5.-B ) .. .. .. .. 6.-B ) .. .. .. .. X 2.-A ) .002" approx. Ground to clean up. 4.-A ) .. .. .. .. .. .. 5.-A ) .. .. 1.-A ) .004" .. .. .. .. 3.-A ) .. .. .. .. .. 6.-A ) .. .. .. .. .. X Tappet marked 2.-A chipped slightly on edges during grinding and has been retained for examination. The remainder as above have been handed over for despatch to Messrs. Rolls-Royce. We still retain in our possession a further 12 of these tappets untreated, and we suggest that Rolls Royce should pass an opinion on the above as soon as they have tried them. The remainder can then be plated under different conditions if found necessary. | ||