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).
Crankshaft damper issues and required treatments for cotton duck washers on 25/30 HP engines.
| Identifier | ExFiles\Box 103\3\ scan0201 | |
| Date | 12th January 1938 | |
| [Handwritten] This is interesting. CHm [Handwritten] Wem Sud DL To By.. [Strikethrough] from Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} c. to Rm.{William Robotham - Chief Engineer} [Strikethrough] c. to Mx.{John H Maddocks - Chief Proving Officer} [Strikethrough] c. to LA.{L. A. Archer} ---------------- [Handwritten] 517. Re: 25/30 HP. Crankshaft Damper. ---------------- Cricklewood are having trouble with the 25/30 h.p. engines. The crankshaft damper becomes too heavily loaded causing timing gear rattles, and bad crank period. The condition of the dampers when dis-assembled are similar to those you have seen on Phantom III i.e. the pattern of the cotton duck on the steel surfaces. I understood when I enquired what was being done to the Phantom III cotton duck washers, that you had instructed an oil treatment before fitting. Would you please send Cricklewood or instruct a Depot Sheet for the same treatment to be used when they are changing the cotton duck washers on the 25/30 h.p. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||