Cover letter for horsepower curves of the standard 40/50 engine with high and low compression.
| Identifier | Morton\M22\ img074 | |
| Date | 5th May 1921 | |
| PROP 40/50 POWER CURVES HIGH & LOW C/R To R. {Sir Henry Royce} from Hs. {Lord Ernest Hives - Chair} c. to CJ. c. to BN. {W.O. Bentley / Mr Barrington} c. to K. {Mr Kilner} c. to Da. {Bernard Day - Chassis Design} c. to BY. {R.W. Bailey - Chief Engineer} c. to EP. {G. Eric Platford - Chief Quality Engineer} c. to PN. {Mr Northey} c. to EWT. for R.R. Inc. ORIGINAL Hs {Lord Ernest Hives - Chair} 2/LG5. 5.21. HORSE POWER CURVES OF STANDARD 40/50 ENGINE. Y3056 ?, not filed Attached herewith are curves of high and low compression 40/50 engine giving the dynamometer and road wheel horse power with cut-out open and cut-out closed. We have plotted on these curves the different axle ratios so that a comparison of horse power at various speeds can be ascertained. The figures for these curves have been taken from average production engines. Hs. {Lord Ernest Hives - Chair} R.R. REV (100 J) (21 B 1917 10-12-20) C 2041 | ||
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).