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).
Mechanical failures of alloys and gudgeon pins, with a table of standard performance figures.
| Identifier | ExFiles\Box 133\3\ scan0047 | |
| Date | 28th February 1939 | |
| -8- Mechanical Failures - Cont'd.{John DeLooze - Company Secretary} (b) B.L.2 Alloy. Three bearings run, one failing due to bad adhesion and the other two being O.K. after 55 hours. (c) B.L.3 Alloy. One bearing failed due to poor adhesion after 37 hours. (3) Gudgeon Pin. Failed after 300 hours. Hardened and tempered silico-manganese steel. Standard Performance Figures. These are given for no air swirl conditions. | RPM | BMEP | FUEL CONS. lbs/BHP/hr. | FUEL INJECTION cc/cycle. | |------|---------|------------------------|--------------------------| | 2000 | 102.0 | .550 | .288 | | | 94.0 | .480 | .232 | | | 75.0 | .448 | .173 | |------|---------|------------------------|--------------------------| | 1500 | 117.0 | .545 | .326 | | | 102.0 | .450 | .235 | | | 76.0 | .435 | .170 | |------|---------|------------------------|--------------------------| | 1000 | 125.0 | .487 | .318 | | | 107.0 | .430 | .235 | | | 92.0 | .410 | .195 | Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} | ||