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).
The urgent need for a model switchbox for the 40/50 HP electrical system.
| Identifier | Morton\M11\ img245 | |
| Date | 22th October 1919 | |
| To DA.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} Copy to Sd. EN EFC. X.3618 UW ORIGINAL. S.D. RECEIVED 23 OCT 1919 RE SWITCH BOX - 40/50 H.P. ELECTRICAL SYSTEM. You will no doubt recollect that on the 13th August we sent to you drawing No. LeC.1127 shewing the above, and stated at the same time that a model switch of one unit only of the switchbox should be prepared in the Experimental Dept. and forwarded for Mr. Royce's criticism before the complete switchbox was proceeded with. Would you kindly say when we may expect this model. The matter is urgent, as the design will be required for the 501st chassis of the post-War series. Certain alterations will be required to the main design affecting the shape of the casing, but not the details of the switch units themselves. E.{Mr Elliott - Chief Engineer} | ||