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).
Diagram showing the load on end journals for a flat 12-cylinder engine at 3500 RPM.
| Identifier | ExFiles\Box 115\2\ scan0515 | |
| Date | 18th November 1939 guessed | |
| FLAT 12 CYL. ENGINE - LOAD ON END JOURNALS A.G. @ 3500 R.P.M THIS DIAGRAM HAS BEEN OBTAINED FOR JOURNALS A-G BY ASSUMING ALL THE FORCES AT EACH CYLINDER TO ACT AT THE C.G OF THE CRANK PIN, AND USING THE BOWER THEORY IN WHICH THE CRANKSHAFT IS CONSIDERED AS A CONTINUOUS BEAM. BORE 3 1/2 STROKE 4 1/2 CONN. ROD 4.08 CRANK WT. OF PISTON, RINGS AND PIN. 1.61 lbs BEARING DIMENSIONS 2.75" dia x 2.0" CONN. ROD. WEIGHTS FORKED | PLAIN LITTLE END 0.8 | 0.75 BIG END 2.0 | 1.27 FIRING ORDER A.{Mr Adams} 1 4 2 6 3 5 B. 2 6 3 5 4 1 LBS. SHEET 2 | ||