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).
Moment of inertia tests for a Peregrine connecting rod and piston assembly.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page233 | |
| Date | 16th November 1932 | |
| γ 4027a 16.11.32. MOMENT OF INERTIA TESTS. PEREGRINE CONNECTING ROD AND PISTON. SUSPENSION WIRES FIXED DIRECTLY INTO PISTON CROWN. LENGTH OF EACH WIRE "l" = 2ft. DISTANCE BETWEEN WIRES "d" = 2.5" = 5/24 ft. } CONSTANT FOR ALL TESTS. 1. CON-ROD + PISTON + GUDGEON PIN. - WITHOUT RINGS. PERIODIC TIME "t" = 1.01 secs. TOTAL WEIGHT. "w" = 2 lb. 1/4 oz. = 2.0156 lb. } Io = .0002824 lb.ft2 2. PISTON + GUDGEON PIN - WITHOUT RINGS. PERIODIC TIME "t" = 1.23 secs. TOTAL WEIGHT "w" = 12.25 ozs. = .765 lb. } Io = .000159 lb.ft2 1A. CON-ROD + PISTON + GUDGEON PIN + RINGS. PERIODIC TIME "t" = 1.04 secs. TOTAL WEIGHT "w" = 2 lb. 1 1/2 oz. = 2.094 lb. } Io = .0003111 lb.ft2 1B. PISTON + GUDGEON PIN + RINGS. PERIODIC TIME "t" = 1.27 secs. TOTAL WEIGHT "w" = 13 1/2 ozs. = .844 lb. } Io = .0001889 lb.ft2 PISTON E.100035 GUDGEON PIN E.100038 CON ROD E.100156 L.O.P. W. Bell. | ||