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).
Standard volt-ampere characteristics and resistance limits for starter motor batteries, leads and cables.
| Identifier | ExFiles\Box 61b\3\ scan0142 | |
| Date | 26th August 1921 | |
| X543 6027 26.8.21. X.543. STANDARD VOLT-AMPERE CHARACTERISTIC OF BATTERY AND LEADS FOR STARTER MOTOR TESTS. X.664. Amperes. Volts. 50 11.0 75 10.5 100 10.0 125 9.5 150 9.0 175 8.5 200 8.0 225 7.5 250 7.0 Limits ± .1 X.543. X.664. STARTER MOTOR CABLE AND BATTERY RESISTANCE LIMITS. Cable .005 ohm. Battery .015 ohm. Total .02 ohm. Loss of volts due to 100 amperes = 2 agreeing with specified volt drop. EFC. | ||