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).
Blueprint detailing hydraulic shock damper tests with various restriction configurations and performance results.
| Identifier | WestWitteringFiles\S\March1928-May1928\ Scan080 | |
| Date | 30th March 1928 guessed | |
| HYDRAULIC SHOCK DAMPER TESTS. HIGH PRESSURE - EQUIVALENT PISTON VELOCITY 14" / SEC. PORT IN CYLINDER OPENED OUT TO .500" DIA: 2.500" DEEP. RESTRICTION "A": Diagram showing a single-hole restriction. Dimensions: .201" DIA, .500" DIA. RESTRICTION "B": Diagram showing a two-hole restriction. Dimensions: .125" CTS{C. Trot Salt - Carburation}, .201" DIA, .500" DIA. RESTRICTION "C": Diagram showing a two-hole restriction with a guide pin hole. Dimensions: GUIDE PIN HOLE, .218" DIA, .110", .500" DIA. ALL RESTRICTIONS .150" THICK. DISTANCE PIECES: Diagram of a distance piece. Dimensions: .500" DIA, .437" DIA, E.{Mr Elliott - Chief Engineer} TEST 1.H. SIX RESTRICTIONS :- A & B. ALTERNATE E = .200" PRESSURE 500 LB/D" Dimension: .250" TEST 2.H. SEVEN RESTRICTIONS :- "C" E = .250" PRESSURE 725 LB/D" TEST 3.H. SIX RESTRICTIONS :- "C". E = .300" PRESSURE 675 - 700 LB/D" Dimension: .150 TEST 4.H. THREE RESTRICTIONS :- "C" E = .600" PRESSURE 475 LB/D" Dimension: .300 TEST 5.H. SEVEN RESTRICTIONS:- "C" E = .200" PRESSURE 725 - 750 LB/D" Dimension: .250" TEST 6.H. EIGHT RESTRICTIONS :- "C". E = .200" PRESSURE 825 LB/D" Dimension: .250" DESIRED RESULT. TEST 7.H. SAME AS FOR 6.H. BUT WITH E = .300" PRESSURE 800 LB/D" PRESS. TEMP TEST 7.H. TABLE: | T1. OIL TEMP C° | T2. AIR TEMP C° = T1. - 10°C | PRESS. LBS/D" 6.H.A | PRESS. LBS/D" 7.H.A | |-----------------|--------------------------------|----------------------|----------------------| | 11°C | 1° | 825 | 800 | | 23° | | 825 | | | 33°C | 23° | 825 | 760 | | 43°C | 33° | 820 | 750 | | 58°C | 48° | 800 | 750 | | 70°C | 60° | 775 | 720 | ALL TESTS COMPRESSOR OIL. PRICES MOTORINE C AT 15°C = COMPRESSOR OIL AT 0°C OR AIR TEMP -10°C. PRESS. 7.H.A. = 825 LBS/D" | ||