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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. {E. Fowler Clarke - Electrical Engineer} 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}
  
  
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).


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