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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).
Instructions regarding the inefficiency and noise of Watford ROI magnetos on the 20HP chassis.

Identifier  ExFiles\Box 57\2\  Scan215
Date  31th December 1928
  
RR 238 (150 BKS.) (OB 461-8-12-24) MP 306975
X5790
ROLLS-ROYCE LTD.
INSTRUCTIONS.
To E.F.C.
Date 31 - 12 - 1928
Order No. WD{Mr Wood/Mr Whitehead}2A
Customer's No. X5790.X 5792.
Watford ROI. magnetos.
The test dept still complain of the inefficiency and noise of these magnetos on the 20HP Chassis. We reported in WD{Mr Wood/Mr Whitehead}13 on the 26th Sept last that these magnetos do not pass our specification, can we do anything in the way of getting Messrs Norths to improve this magneto?
We feel sure that with the range reduced to 40° a sleeve or a sleeveless magneto could be produced which would give a satisfactory electrical performance. This range is I think all we require on the 20HP as a standby.
Signed H.E.W.
This Sheet must be filed on completion of the work.
  
  


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