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).
Clarifying the specifications for holes in shock damper high-pressure valves across different chassis models.
| Identifier | ExFiles\Box 16\5\ Scan015 | |
| Date | 2nd September 1931 | |
| Hs.{Lord Ernest Hives - Chair} X7 520. BY.5/G.2.9.31. SHOCK DAMPERS. r235. x5-5-20. 276. MR. HANCOCK'S REPORT 5.8.31. With regard to the fact that Mr. Hancock points out that the .038 holes in the high pressure valves were deleted, we would like to remind you the present position, which is as follows :- 1/- R.H. 40/50 HP. No leakage holes in the valves. 2/- L.H. CHASSIS. .038" holes in front and near damper valves. (one hole front and two holes rear). 3/- 20 HP. CHASSIS. .031" hole in the rear damper valves only. The above refers to high pressure valves only, low pressure valves being undrilled. 73.5- 5.83- 5.65- BY.{R.W. Bailey - Chief Engineer} B4 | ||