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).
Results of a power test comparing two different sized copper asbestos washers for the throttle chamber joint.

Identifier  ExFiles\Box 38\4\  Scan028
Date  26th October 1920
  
HS.{Lord Ernest Hives - Chair}
c. to BY.{R.W. Bailey - Chief Engineer}
X3436
FR
EP{G. Eric Platford - Chief Quality Engineer}/Mx{John H Maddocks - Chief Proving Officer}1/F26.10.20.

RE. COPPER ASBESTOS WASHER FOR THROTTLE CHAMBER JOINT.

We have taken a careful power test on an engine to determine whether the 48 x 58 m/m washer specified for the above joint has any effect on power if used in the exhaust drop pipes instead of the 49 x 58 m/m washer specified.

We find there is no difference in performance with either washer fitted.

In view of the similarity of the two washers, and the marked disadvantage if the 49 x 58 size is used in the throttle body, will you please consider the advisability of delating the 49 x 58 washer and instructing the use of the 48 x 58 for both the exhaust pipe and throttle chamber joints?

EP{G. Eric Platford - Chief Quality Engineer}/Mx.{John H Maddocks - Chief Proving Officer}

[STAMPED]: RECEIVED OCT 26 1920 HS{Lord Ernest Hives - Chair}
  
  


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