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).
Minute from a conference in Derby regarding the decision to use two sources of supply for batteries and sparking plugs.
| Identifier | ExFiles\Box 33\3\ Scan082 | |
| Date | 16th September 1920 | |
| X.1812 l. 3 MINUTE PASSED AT MIDLAND HOTEL CONFERENCE, DERBY, ON SEPTEMBER 16TH 1920. 2 YC. AGREED - X.664 X607 X.979 Batteries and Sparking Plugs. X 1812 That in the case of units which are only expected to have a certain life, such as Batteries and Sparking Plugs that two sources of supply could be used on production cars at same time; for instance, chloride batteries and Tudor batteries might be fitted to production cars. The advantages of this scheme are that we shall have two sources of supply and that if one fails or gives trouble we can carry on. It also enables us to prove under service conditions which is the better. Hh | ||