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).
Inertia turning moment diagram for a 20 HP 6-cylinder engine.
| Identifier | ExFiles\Box 6\1\ 01-page020 | |
| Date | 18th May 1927 | |
| INERTIA TURNING MOMENT DIAGRAM FOR 20 H.P. R.R. ENGINE. TAKEN FOR 6 CYLINDERS. TOTAL MOMENT FOR 6 CYLINDERS. TAKEN FROM VALUE CURVE ON ORIGINAL GAS TORQUE DIAGRAM. CRANKCASE ANGLE 180°, CRANK 72°, ROD 14.15", STROKE 3.875". Y-axis: TORQUE LBS. INS. X-axis: DEGREES OF CRANKSHAFT. Curve labels: P.C. NO.1, P.C. NO.2, P.C. NO.3, RESULTANT, MEAN TORQUE. CURVES SHOWING INERTIA TORQUE FORWARD & AFT OF CRANK DAMPER. THESE SHOULD BE NEARLY IDENTICAL, THE ONLY LOSS IS THE CRANKSHAFT TORSION CONSTANT, THE ACTUAL MEASUREMENT BY MR. WATT. THE TORQUE WAS 200 LBS INS. THIS SHOWS THE TWO ARE IN AGREEMENT. | ||