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).
Specifications for fixed and automatic cushion type cylinders, detailing bore, stroke, piston area, and allowable pull.
| Identifier | ExFiles\Box 128\2\ scan0197 | |
| Date | 12th October 1933 guessed | |
| CC.1/3 -3- A = Total Stroke B = Stroke before cushion point C = Stroke after cushion point D = Total extended length with piston in position A.{Mr Adams} FIXED CUSHION TYPE Cyl. type | Bore in inches | Total A | Before cushion B | After cushion C | Area of piston sq.inch | Max.allowable pull in lbs. ------------------------------------------------------------------------------------------------------------------ CA.1 | 3.5/8 | 2.11/16 | 1.1/16 | 1.5/8 | 10.3 | 40 CB.1 | 4.1/2 | 2.11/16 | 1.3/8 | 1.5/16 | 15.9 | 54 CB.2 | 4.1/2 | 2.11/16 | 1.1/16 | 1.5/8 | 15.9 | 54 CC.1 | 5.1/4 | 2.1/4 | 15/16 | 1.5/16 | 21.6 | 84 CC.2 | 5.1/4 | 3.1/2 | 1.5/8 | 1.7/8 | 21.6 | 84 CC.3 | 5.1/4 | 2.11/16 | 1.1/16 | 1.5/8 | 21.6 | 84 AUTOMATIC CUSHION TYPE Cyl. type | Bore in inches | Total A | Area of piston sq.inch | Max.allowable pull in lbs. -------------------------------------------------------------------------------------------- CB.1A | 4.1/2 | 2.11/16 | 15.9 | 54 CC.1A | 5.1/4 | 2.1/4 | 21.6 | 84 CC.2A | 5.1/4 | 3.1/2 | 21.6 | 84 CC.3A | 5.1/4 | 2.11/16 | 21.6 | 84 | ||