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).
From Royce to Hives regarding piston ring solutions for Twenty HP and Phantom models.
| Identifier | ExFiles\Box 15\3\ Scan017 | |
| Date | 23th July 1928 | |
| Hives, Roycar, Derby. WW. 23.7.28. X. 741 X. 7040 X 5040. VERY N ANXIOUS ABOUT PISTON RINGS. UNDERSTAND PLAIN RING WILL BE USED AT ONCE ON TWENTY HP. PRODUCTION BUT PHANTOM STILL DEPENDING ON OUR L. SHAPE. SUGGEST PISTON LEC. 2554 WITH BOTTOM SCRAPER MIGHT BE A SOLUTION. IF REQUIRED TO BE MORE EFFECTIVE USE TWO PERFECT CIRCLES OR FACE RELIEVED RINGS. ALTERED OILY GROOVES IN BEARINGS AND BIG ENDS SHOULD HELP ALSO RINGS C. D.{John DeLooze - Company Secretary} & E.{Mr Elliott - Chief Engineer} LeC. 2577 EARLY REPLY DESIRED. ROYCE. | ||