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).
Copy of a telegram from Mr. Royce regarding a solution for piston tightness due to carbon deposit.
| Identifier | ExFiles\Box 77\3\ scan0163 | |
| Date | 15th March 1920 | |
| X.8757a. COPY. COPY OF TELEGRAM RECEIVED FROM MR. ROYCE. 15.3.20. CLAUDE JOHNSON ROLHEADRolls-Royce telegram address REG LONDON. WE HAVE APPARENTLY FOUND DEFINITE SOLUTION FOR MADDOCKS COMPLAINT AS TIGHTNESS OCCURS THROUGH CARBON DEPOSIT ABOVE SPRING STOP PISTONS HAVE TO BE TURNED WITH EXTRA CLEARANCE OR ANOTHER RING FITTED HIGHER UP LATTER IS PREFERRED AND RECOMMEND KINDLY ADVISE DERBY OF YOUR APPROVAL OF THIS MODIFICATION WHICH AT LEAST IS BETTER THAN THE RISK OF CARBON DEPOSIT MAKING TIGHT PISTONS UNDER HEAVY LOADS AFTER LONG RUN ROYCE. | ||