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).
The fit of the gudgeon pin in the piston for a standard chassis.
| Identifier | ExFiles\Box 35\2\ scan 033 | |
| Date | 3rd December 1918 | |
| To Mr. Milles from BY/Shn. c.c. to bpc. c.c. to Mr. Coverley. BY/Siml/AL.31218. 3rd Dec. 1918. RE STANDARD CHASSIS - PISTON & CONNECTING ROD. X.3400.A With reference to the above, will you please instruct that the fit of the gudgeon pin in the piston should be similar to what we used on the aero engine previous to broaching. Please instruct the Expl: Dept: that two pistons should be fitted as above, two pistons .0002 tighter and two pistons .0003 tighter, and reported under the above. X. No. It will be noticed that with reference to the above experiment no form of locking is shown, so that it is necessary to have the gudgeon pin a tight fit. BY/Shn. | ||