Specification sheet detailing the displacements and dimensions for various shock dampers.
| Identifier | ExFiles\Box 99\3\ scan0171 | |
| Date | 23th February 1940 | |
| HH2 v 1792. Copy for EV {Ivan Evernden - coachwork} and General Damper File. c to Rm {William Robotham - Chief Engineer} /Gim. Rm {William Robotham - Chief Engineer} /FJH. {Fred J. Hardy - Chief Dev. Engineer} 5/DT.23.2.40. SHOCK DAMPER DISPLACEMENTS. R.R. G.A. Front Damper. Arm = 10" Max Stroke at arm. = 8" Rocking Lever length = 2.125" Max piston stroke. = 0.85" Piston Dia. = 1.500. Piston Area. = 1.767 Sq. inch. Volume Displaced = 1.50 cu. ins. Displacement per inch of wheel movement. = 0.1875. G.A. 1 1/2 Piston Damper. Arm = 10" Max stroke at arm = 14.25 Rocking lever length = 1.875. Max piston stroke = 1.335 Piston Dia. = 1.225 sq. in. Volume displaced = 1.635 cu. ins. Displacement per inch of Wheel movement. = 0.1147 ditto with 7.00 arm = 0.1639 R.R. Rear Damper. Arm = 10" cont'd. {John DeLooze - Company Secretary} | ||
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).