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).
Indicator card record for Luvax shock absorbers showing maximum pressure readings at various temperatures.
| Identifier | ExFiles\Box 152\1\ scan0077 | |
| Date | 4th January 1933 | |
| LUVAX SHOCK ABSORBERS - INDICATOR CARD RECORD (43) LENGTH OF LEVER ARM ... 8" TYPE RMP. (Rolls-Royce) No. I. DATE 4.1.33. Card No. | Speed revs | Stroke ins. | Reg. Screw turns | Temp. °C. | Side | Indicator Spring lbs/sq" | Piston sq" | Valve Springs Turns Open B | Valve Springs Turns Open F | Max. Pressure lbs/sq.in. | REMARKS ---|---|---|---|---|---|---|---|---|---|---|--- 371 | 70 | 4 | - | 20 | RH {R. Hollingworth} | 350 | 1/8 | 2 | 1.7/8 | 730 | " 372 | " | " | - | 25 | " | " | " | " | " | 720 | " 373 | " | " | - | 30 | " | " | " | " | " | 710 | " 374 | " | " | - | 35 | " | " | " | " | " | 690 | " 375 | " | " | - | 40 | " | " | " | " | " | 670 | " 376 | " | " | - | 45 | " | " | " | " | " | 670 | " 377 | " | " | - | 50 | " | " | " | " | " | 660 | " 378 | " | " | - | 55 | " | " | " | " | " | 640 | " 379 | " | " | - | 60 | " | " | " | " | " | 640 | " 380 | " | " | - | 65 | " | " | " | " | " | 620 | " | ||