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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 detailing engine misfiring issues and diagnostic steps taken, including ballast replacement.

Identifier  ExFiles\Box 69\1\  scan0137
Date  8th December 1924
  
RR 23B (150 BKS.) (DB{Donald Bastow - Suspensions} 451-8-12-24) MP 306975

ROLLS-ROYCE LTD.
INSTRUCTIONS.

To______________________________________.19
Order No. (2)
Customer's No.________________

After the engine had been maintained at this temp for about 30 mins, the pick up was again tried and was found to be very bad misfiring occurring so much so as to prevent almost any acceleration at all.
Starting on B.I. was also poor.
The ballast was then replaced by an old std single ballast and the pick up again tried, which was found to have considerably improved being considered reasonably OK.
Replacing the double ballast we allowed the engine temp to drop to about 70°C, but the misfiring still persisted on the pick up,

Signed (Contd)

This Sheet must be filed on completion of the work.
  
  


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