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).
Promising results of bench tests on an annealed copper commutator for a 20 HP dynamo and planning for further experimental use.
| Identifier | ExFiles\Box 50\5\ Scan299 | |
| Date | 25th March 1924 | |
| X4333 To EY. from EFC. {E. Fowler Clarke - Electrical Engineer} c. BY {R.W. Bailey - Chief Engineer} /RD. c. RHC. {R. H. Coverley - Production Engineer} EFC {E. Fowler Clarke - Electrical Engineer} 3/T25.3.24. X.4333 - ANNEALED COPPER COMMUTATOR FOR 20 HP DYNAMO. As will be seen from the attached report AC.9 of the 19th inst., the bench tests of the annealed copper commutator have shown a rather promising result. It is now intended to set this machine to the general specification of test and put it on experimental chassis 7GII. As previously explained, the output of the machine would be rather more in this condition than when set to the production test. In the meanwhile it is considered desirable to have a further commutator made up with this annealed copper. Will RHC. {R. H. Coverley - Production Engineer} therefore kindly put one in hand, and later we will allot an experimental dynamo to which this commutator may be fitted. EFC. {E. Fowler Clarke - Electrical Engineer} | ||