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).
Requesting experimental tests on a 28 slot armature for a 20 HP dynamo without central banding.
| Identifier | ExFiles\Box 165\6\ img101 | |
| Date | 1st September 1927 | |
| To EY/RD. from EFC. X5861 EFC3/116.9.27. 28 SLOT ARMATURE FOR 20 HP. DYNAMO. WITHOUT THE CENTRAL BANDING. Would you kindly instruct two such armatures to the above specification for experimental tests, the timing of the commutator to be precisely as arranged for new present standard. Also, further to our EFC1/T21.6.27, have you considered the provision of punched plates? We leave this in your hands to put through experimentally whenever you think circumstances are, or become, suitable. EFC. | ||