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).
Graph of speed-output curves for the R.R. Sch 481 and Lucas C5H dynamos.
| Identifier | ExFiles\Box 60\4\ Scan225 | |
| Date | 4th July 1934 guessed | |
| AMPERE OUTPUT DYNAMO SPEED (R.P.M) R.R. SCH 481 DYNAMO LUCAS C5H DYNAMO LOW SPEED A--A HIGH SPEED B HIGH SPEED B SPEED - OUTPUT CURVES TAKEN IN THE FULLY HOT CONDITION WITH A CONSTANT TERMINAL VOLTAGE OF 13.0. CURVES 'A' INDICATE, IN EACH CASE THE MAXIMUM OUTPUT OBTAINED, FOR A TEMPERATURE RISE OF 55C°, RUNNING CONTINUOUSLY AT THE LOWEST SPEED, FOR AT LEAST EIGHT HOURS. CURVES 'B' ARE AS FOR 'A', BUT WITH THE SPEED CONSTANT AT A MAXIMUM OF 5,250 R.P.M. | ||