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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).
Alternative proposals for air silencer arrangements on the Bentley 111.

Identifier  ExFiles\Box 152\3\  scan0241
Date  12th March 1938
  
RV/ES.
G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Rm.{William Robotham - Chief Engineer}
C. [REDACTED]

1297

DA.{Bernard Day - Chassis Design}5/G.12.3.38.

F.{Mr Friese} Dodd. Perhaps you will consult Coyman & get something made up for test Rm{William Robotham - Chief Engineer}
BENTLEY 111. AIR SILENCERS.

ON account of the difficulty of fitting the standard Bentley Silencer on Bentley 111 due to its projection into the dash, we have considered what could be suggested to give us a more convenient arrangement, and herewith are two proposals E.CD.516 and E.CD.530.
No doubt there are others which could be considered and these two are susceptible to modifications in dimensions, which can only be determined by trial. We suggest that they may form a basis for investigation.

We do not think any detailing is required yet, as no doubt Experimental will make them up from the scheme in the most convenient way.

E.CD.516 shows a single silencer compartment, with two outlets arranged so that the flow of air in the air inlet pipes is not reversed.

E.CD.530 shows a double silencer compartment, each bank of three cylinders having its own silencer.

In both cases the silencers are arranged for two S.U. carburetters.

ECD 530
wanted

Instructed
to scheme to be made up.

Rem/FD{Frank Dodd - Bodies}
DA.{Bernard Day - Chassis Design}
  
  


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