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 different types of bevel wheels and pinions for axles.
| Identifier | ExFiles\Box 136\5\ scan0154 | |
| Date | 3rd January 1928 | |
| HYPOID AND EAC VII AXLES. COMPARITIVE WEIGHTS OF BEVEL WHEELS AND PINIONS. TYPE RATIO PINIONS PIECE NỌ WEIGHT BEVEL WHEELS. PIECE NỌ WEIGHT EAC VII 13/47 G70382 G70596 EAG VII 14/47 G70384 6.19 LBS. G70597 15.31 LBS. ? ✓ HYPOID 11/47 G75491 8.25 LBS. G75493 15.95 LBS. 2.000 OFFSET 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. Handwritten: X2066 X 73-5 Stamp: RECEIVED 3. FEB 1928 | ||