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).
Modifications for a two-rate charge scheme on car 22-EX.
| Identifier | ExFiles\Box 163\6\ img156 | |
| Date | 5th July 1931 | |
| X6016 RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Pgt. c. Hs{Lord Ernest Hives - Chair}/AJL. Hs{Lord Ernest Hives - Chair}/Pgt2/AD.5.7.31. TWO RATE CHARGE SCHEME. In connection with the change of dynamo on 22-EX, the switchbox and field resistance units on this car should also be modified to bring them up to present production standard. This involves altering the switchbox so as to give full output in the S & T position, and arranging the contacts so that the dynamo armature circuit breaks before the field circuit. The resistance unit should be replaced by a standard 23" unit. We should be pleased if you will have this done. Hs{Lord Ernest Hives - Chair}/Pgt. | ||