Rolls-Royce Archives
         « Prev  Box Series  Next »        

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).
Experiments with duplex exhaust systems for the Bentley Corniche to achieve maximum performance.

Identifier  ExFiles\Box 97\3\  scan0046
Date  9th February 1939
  
400C.

By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer}
c. Da.{Bernard Day - Chassis Design}
c. Da{Bernard Day - Chassis Design}/Jnr.{Charles L. Jenner}
c. Ba/MOS.

Rm{William Robotham - Chief Engineer}4/R.9.2.39.

BENTLEY CORNICHE.
Rm{William Robotham - Chief Engineer}/CPS3/R.9.2.39.

In order to allow the maximum performance from this car, we have either got to have a duplex exhaust system or a cut-out. The cut-out will be cheaper and lighter. Also we may not be able to get the duplex exhaust system quiet with a common manifold. Our initial experiments are, therefore, directed to getting the most efficient cut-out. Up to date, a duplex downtake seems worth while. Experiments are continuing, however.

We do not want any design work to be done until we have completed our tests.

Rm.{William Robotham - Chief Engineer}
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙