Test results for four RR1 type regulators adjusted by Messrs. Lucas, operating on an R.R. dynamo.
| Identifier | ExFiles\Box 166\2\ img238 | |
| Date | 7th January 1939 | |
| -4- Rm {William Robotham - Chief Engineer} /RC. {R. Childs} 10/JH. 7th. January, 1939. Results obtained on four RR1 type regulators, specially adjusted by Messrs. Lucas, to operate on an R.R. dynamo running at 4,000 r.p.m., at an open circuit voltage of 16.0 to 16.4 volts. Cold condition. Regulator. Amps. at 13.5 volts thro' A.1. Amps. at 15.5 volts thro' A. {Mr Adams} O.C. Volts. R.R.1. No.IV. 18.5 amps. 6.0 amps. 16.1 volts. LT.1736 No.IV. 21.8 amps. 12.1 amps. 16.7 volts. LT.1740 No.V. 19.4 amps. 9.8 amps. 16.4 volts. R.R.1. No.III. 20.0 amps. 12.0 amps. 16.6 volts. | ||
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).