Graph showing acceleration at the end of a piston stroke versus the ratio of crank radius to connecting rod length for various engines.
| Identifier | WestWitteringFiles\L\Jan1924-March1924\ Scan170 | |
| Date | 7th March 1924 guessed | |
| Y-axis: 2, 1.5, 1, .5, 0 X-axis: 1, 2, 3, 4, 5, 6, 7, 8 X-axis Label: VALUES OF R {Sir Henry Royce} /L Y-axis Label (right): ACCELERATION & MEAN AT EACH END OF STROKE Center Label: INFINITELY LONG RODS Curve Formulas: (1 + R {Sir Henry Royce} /L), (1 - R {Sir Henry Royce} /L) Vertical Line Labels: CONDOR(Aero Engine) III, EAGLE(Aero Engine) GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) I, GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II, HAWK(Aero Engine), LM/50 | ||
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).