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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).
Induction, exhaust, and fan noise levels, with a comparison to the Phantom model.

Identifier  ExFiles\Box 4\1\  01-page130
Date  9th October 1934
  
-6-

Induction, Exhaust & Fan Noise.

We have not as yet done any work on the induction, exhaust or fan noise. There is a certain amount of carburetter roar, but we do not think we shall have any difficulty in getting rid of this by our usual tuning methods. Considering it is the first attempt, the exhaust is commendably quiet, but this may be due to the fact that it is definitely restricting the power output. The fan is not obtrusively noisy. We hope that we shall shortly be able to bring this car up to a better standard than the present Phantom with regard to mechanical and resonance noises.

Hs{Lord Ernest Hives - Chair}/Rs.{Sir Henry Royce's Secretary}
  
  


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