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).
Loading diagram for the outer main bearing of a 12 HP 4-cylinder engine, detailing gas pressure and inertia at 4500 RPM.
| Identifier | ExFiles\Box 115\2\ scan0502 | |
| Date | 26th October 1939 guessed | |
| 12 HP. 4 CYL. OUTER MAIN BEARING LOADING DIAGRAM TDC ON NOS. 1, 4 CYLS. DIAGRAM FOR GAS PRESSURE AND INERTIA AT 4500 RPM 79% ROTATING MASSES BALANCED BORE 2.735" STROKE 3.75" CONN. ROD LENGTH 7.25" WT OF PISTON, RINGS GUDGEON PIN, LITTLE END 1.10 lbs WT OF BIG END 0.90 lbs BEARING DIMENSIONS 2" dia x 1.5" ASSUMED MAX GAS PRESS 500 lb/in² FIRING ORDER 1342 FIRING STROKE BDC ON NOS 1, 4, CYLS. AXIS LABELS: LBS. LBS/SQ INCH. AXIS VALUES: 3000, 2000, 1000, 0, 1000, 2000, 3000 AND 1000, 500, 0, 500, 1000 | ||