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).
Telegram from Mr. Royce detailing a solution for piston tightness due to carbon deposits.
| Identifier | ExFiles\Box 35\2\ scan 204 | |
| Date | 15th March 1920 | |
| X.2448 Copy of Telegram received from Mr. Royce. 15.3.20. CLAUD JOHNSON ROLHEADRolls-Royce telegram address REG L NDN. X.3451a X.2448 X.3743 WE HAVE APPARENTLY FOUND DEFINITE SOLUTION FOR MADDOCK 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 RECOMMENDED 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. Watermark: DICKINSON POST 1804 MADE IN CROXLEY E.H. 235 A (100 T) (S F) 846. 6-8-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2480 | ||