Rolls-Royce Archives
         « Prev  Box Series  Next »        

Oil consumption tests on a Bentley unit with and without modifications to the connecting rods.


Identifier  ExFiles\Box 86\1\  scan0105
Date  2nd November 1934
  
-3-

With the engine standard in every way before modification to the connecting rods we obtained an oil consumption of 1.975 pints/hour at 4000 r.p.m. on a Bentley unit. With the rods modified the oil consumption was found to be 1.950 pints/hour, which is, as will be seen, for all practical purposes approximately the same.

We have also, since carrying out the above tests on Bentley, applied this scheme to C.14 (20/25) unit, and also run comparative oil consumption tests with and without the scheme in operation. In this case the test was run at 3000 r.p.m. and the consumption figures were :-

(1) Without the scheme (normal engine) - .500 pints/hour.
(2) With the scheme applied - .525 pints/hour.

Attached are sketches E.V. 29, 51 & 52 showing the modifications carried out during the experiments.

Hs {Lord Ernest Hives - Chair} /R. Matthews.
  
  
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).


Copyright Sustain 2026, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙