Rolls-Royce Archives
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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).
Performance impact of increasing compression on a 20 HP engine.

Identifier  ExFiles\Box 57\1\  Scan241
Date  1st May 1926
  
contd :-

-2-

to the manifold the cutout is hardly worth while.

The slight increase in compression on the 20 HP.
gives it a very definite increase in performance. The
increase is greater than the impression one gets from
the power curve. We cannot say that this power is obtained
without any sacrifice in smoothness. From our experience
so far we think the difference is only a small amount. We
feel however it is advisable to run experimental cars giving
a good performance, and then tackle the problem of still
maintaining the same smoothness.

We propose sending this car to WW. and letting
the driver bring away 8-G-111 car.

Hs.{Lord Ernest Hives - Chair}

(Curves attached to Hs{Lord Ernest Hives - Chair}/ACL1/LG1.5.26.)

WATERMARK: 1304 ORICOMB MADE AT CROXLEY
  
  


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