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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).
Modifications to the hot throttle induction pipe to improve engine performance with poor quality petrol.

Identifier  WestWitteringFiles\G\August1921\  Scan4
Date  8th August 1921
  
To HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce}
Copy to CJ.
" " BJ.
" " WOR.{Arthur Wormald - General Works Manager}
" " BY.{R.W. Bailey - Chief Engineer}
" " R.R. of America Inc.
(For the attention of OY.)

ORIGINAL

X4305

RE HOT THROTTLE INDUCTION PIPE.

With reference to Mr. Olley's cablegram, though the translation is not quite clear I understand what he generally means. It appears that as regards to both starting and running with bad petrol, we have come to the conclusion that for the first move we ought to fit the small starting carburettor with its special pipe over to the spraying position and a new throttle valve of the present general pattern, but heated with exhaust gas.

These two items, combined with an efficient shutter arrangement to maintain the temperature of the water and under the bonnet in winter seems to complete the first move towards a better system, and should be adopted pending further work in this direction, such as moving the carburettor to a higher position or on to the induction side, or better still, an entirely new engine.

We are now awaiting Derby to produce working drawings and the actual parts as models for Springfield to work to.

R.{Sir Henry Royce}

Will Works inform Mr. Basil when these will be forwarded so that he can reply to OY's cablegram.

RECEIVED [STAMP]

H'K' 5297 (100 L) (2'H 198' 11-8-20) C 1200
  
  


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