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).
The performance data of a Hispano servo.
| Identifier | ExFiles\Box 180\M4\M4.1\ img032 | |
| Date | 1st March 1924 | |
| R.R. 493 (40 H) (SL 42 12-7-23). J.H. D.{John DeLooze - Company Secretary} X1557 EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} EP.{G. Eric Platford - Chief Quality Engineer} PN.{Mr Northey} OY. Expl. No. 4214 1559 REF. Hs{Lord Ernest Hives - Chair}/ACL1/LG11. 3. 24. OBJECT OF TEST. Data of Hispano servo. TESTER. A.{Mr Adams} C. Lovesey. CONDITIONS. Tests made with engine on test bench. SUMMARY OF TEST. Ratio of torque output to torque input. Experiments made over a range of loads equivalent to pedal pressures from 15 lbs. to 100 lbs. and an equivalent car speed of approx. 30 M.P.H. Torque output - In these results - Torque output = torque given by servo + torque input. RESULTS :- | | Ratio torque output / torque input | Value of μ from results. | |---|---|---| | Max. value reached. | 10 | .57 | | Min. value reached. | 3 | .28 | | Average value. | 4 | .36 | contd:- | ||