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 arrangement of counterweights on crankshafts for various competitor engines.
| Identifier | ExFiles\Box 25\3\ Scan374 | |
| Date | 13th November 1928 | |
| FIG. 2. ARRANGEMENTS OF COUNTERWEIGHTS IN SOME ENGINES STR. 8. PACKARD 4 BEARINGS 6 CYL CHRYSLER 7 BEARINGS 6 CYL DE SOTO 4 BEARINGS 30° 6 CYL. A.C. 4 BEARINGS. 6 CYL FRANKLIN 7 BEARINGS 6 CYL 20HP SUNBEAM 4 BEARINGS 4 CYL RILEY-9. EXTENDED WEBS 2 BEARINGS NEW FORD. 4 CYL. DISC WEBS 3 BEARINGS 4 CYL A.C. RACING ENGINE. 2 BEARINGS C.E. DEPT. 13 NOV 1928 DERBY T.S. 6/11/28. | ||