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).
Comparative table of weights for bevel wheels and pinions for various axle types.
| Identifier | ExFiles\Box 12\2\ 02-page026 | |
| Date | 3rd January 1928 | |
| HYPOID AND EAC VII AXLES. COMPARITIVE WEIGHTS OF BEVEL WHEELS AND PINIONS. | TYPE | RATIO | PINIONS | | BEVEL WHEELS. | | | | | PIECE Nº | WEIGHT | PIECE Nº | WEIGHT | |---|---|---|---|---|---| | EAC VII | 13/47 | G70382 | | G70596 | | | EAG VIII | 14/47 | G70384 | 6.19 LBS. | G70597 | 15.31 LBS. ? | | HYPOID 2.000 OFFSET | 11/47 | G75491 | 8.25 LBS. | G75493 | 15.95 LBS. | | | 13/47 | G75492 | 9.93 LBS. | G75494 | 14.25 LBS. | | HYPOID 1.000 OFFSET | 11/41 | G75837 | 8.72 LBS. | G75836 | 13.48 LBS. | | STANDARD 40/50 | 15/52 | G7058 | 3.87 LBS. | G7057 | 14.25 LBS. | | ||