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).
Letter from the Experimental Department regarding issues with piston rings and pistons.

Identifier  ExFiles\Box 148\1\  scan0142
Date  20th May 1939
  
c RHE/RP Inspection file
1256
EXPERIMENTAL DEPARTMENT.
Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}4/JH.
20th. May, 1939.
The Light Production Co.Ltd.,
60/66 Rochester Row,
LONDON.S.W.1.
For the attention of Mr. Brooks.
Dear Sirs,
The 'L' section rings arrived safely, and have been fitted to the necessary pistons.
Our inspection dept. have now reported on the 14 pistons EB.4740 received as the beginning of our production order.
There are one or two points as follows :-
Piston Rings.
Our drawings No.EB.4747-8-9 do not show a chamfer on the inside corners, but your rings are chamfered.
This is of course our mistake, and the chamfer is correct, so in order that our detail drawings may be brought in line, will you please supply prints of your working drawings.
Pistons.
It is reported that the inside core dia. is plus, from .015 to .025 thus leaving the walls thin to this extent on the skirt.
  
  


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