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 distortion test of a connecting rod under various conditions.
| Identifier | ExFiles\Box 93\1\ scan0123 | |
| Date | 7th December 1936 | |
| To Rm{William Robotham - Chief Engineer}/Smth. 314 7.12.36. Ex.21235 P.III. Connecting Rod. DISTORTION TEST. The rod submitted for test was not new, and was distorted when supplied. However, the tests were carried out, the bore being measured before and after subjecting the rod to a tensile load of 3000 lbs. (the load being suspended from the end of the rod) using the following test bars:- (a) Without bearing bar dead size (Drg.) (b) Without bearing, bar allowing .0025" diametral clearance. (c) With bearing EX.22402/3 fitted. Bar allowing .0025" diametral clearance. Since all three tests were taken with the same rod, it would be difficult to estimate the magnitude and direction of collapse which would have occured had each test been performed with a separate rod from the results obtained, since slight permanent distortion occured during the first test, and this naturally affected the succeeding tests. From these results the greatest distortion occured without the bearing and with .0025" diametral clearance. With the bearing fitted the distortion was comparatively small. W.Bell. | ||