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).
Suggestion to increase the coil clearance on SS valve springs by altering the bottom washer.
| Identifier | ExFiles\Box 17\6\ Scan055 | |
| Date | 8th November 1928 | |
| X7060 HIVES. WW. 8.11.28 X290 REGARDING SS.{S. Smith} VALVE SPRINGS SUGGEST YOU TRY INCREASING COIL CLEARANCE OF BOTH SPRINGS POINT TWO OF AN INCH BY ALTERING BOTTOM WASHER. ELLIOTT+ | ||