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).
Adjustments to front dampers causing a grunting noise and brake thumps on a Phantom III.
| Identifier | ExFiles\Box 91\1\ scan0327 | |
| Date | 15th June 1936 | |
| 69 +300a HOTEL DE FRANCE. CHATEAUROUX. Indre. France. Les.{Ivan A. Leslie} GWH{George W. Hancock - Head Chateauroux}/HFH{Hoppy F. Hamilton}/3/JAB. Expecting you to get 36.E.X. to a condition where we can judge silence of front dampers Rm{William Robotham - Chief Engineer} 10. Hs{Lord Ernest Hives - Chair}/Pm. 32.EX - PHANTOM III We have reduced the washers under the front damper valves by .015" as suggested by Leslie. This has given us the required damping on the front of the car, which we must have, but has set up a grunting noise when the car rides over rough roads. This merely confirms what Leslie said would happen. We find that slacking of the friction damper on the servo swinging arm has produced front brake thumps. ---------- H.{Arthur M. Hanbury - Head Complaints} Hamilton GWH{George W. Hancock - Head Chateauroux}/HFH.{Hoppy F. Hamilton} | ||