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).
Test report on endurance, circuit tests, and volt-speed curve performance.
| Identifier | ExFiles\Box 65\3\ scan0022 | |
| Date | 26th May 1927 guessed | |
| -3- Contd. W (6) Endurance test :- OK. Bakelite distributor gear wheel has high spot causing rather uneven meshing. (7) Short ~~endurance~~ circuit test :- OK. (8) Open circuit test :- OK. uneven sparking at the safety gap. (9) Open circuit primary volt-speed curve. Speed. Volts. Volts/Speed. 400 2.50 .00625 800 4.58 .00573 1200 6.90 .00575 1600 8.75 .00547 2000 11.57 .00578 2400 13.64 .00567 2800 15.48 .00553 3200 17.40 .00543 3400 18.32 .00539 Contd. Volt-ampere capacity at 2000 rpm = 21.4. Figure of merit = 1.57 (very poor). | ||