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).
Extract from a memo discussing electrical work, including ignition tests, a switchbox design, and magneto specifications.
| Identifier | WestWitteringFiles\L\April1924-June1924\ Scan30 | |
| Date | 6th June 1924 | |
| ORIGINAL (stamp) TO EFC. FROM RS.{Sir Henry Royce's Secretary} SECRET RS{Sir Henry Royce's Secretary}1/M6.6.24. X9730 E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. 11. X9960 I send you below an extract from Mr. Royce's memo. (R3/M4.6.24.) relating to electrical work. x x x x x x "TO CJ. BJ. RG.{Mr Rowledge}" (SHEET 3.) R3/M4.6.24. " DA.{Bernard Day - Chassis Design} F.{Mr Friese} P." " HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} PN.{Mr Northey}" "IGNITION TEST. : X 9780 " We shall fit a small extra switch to earth the " magneto (in parallel with box) to test if the battery " ignition is OK. in positions 2 or 3. This can be anywhere " within reach of the driver, and of any suitable pattern, " and need not be locked. "R-R.{Sir Henry Royce} SWITCHBOX. X9730 " The switchbox 4. Magneto, no battery " should be like this ignition & charge. " which I think you 3. Magneto, battery " can arrange from ignition & charge. " parts in hand. 2. Magneto, battery " (Slightly different ignition & no charge. " to instructed.) 1. Everything off. ignition " Position 4. is required to test if the magneto " ignition is OK. and to save current in case of accumu- " lators being low. "MAGNETO. X9790 X4182 " This with the smaller type of governed " "Scintilla" magneto (type A-M-6A) completes the elec- " trical equipment until we change the starter motor. R.{Sir Henry Royce}" x x x x x x x x x x The remainder of R3/M4.6.24. concerns EAC.2. RS.{Sir Henry Royce's Secretary} | ||