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).
Cost and weight comparison between the Wraith and Leyland Cub gearboxes.
| Identifier | ExFiles\Box 148\5\ scan0440 | |
| Date | 16th September 1938 guessed | |
| Copy for Cost File 126@ COMPARISON OF WRAITH & LEYLAND CUB GEARBOX. TYPE OF BOX. WT. OF BOX LESS SERVO MATERIAL COST LESS SERVO. MATERIAL COST PER LB. WAGES COST OF BOX. WAGES COST PER LB. WRAITH 90 lbs. 199.7 2.2 228.2 2.54 LEYLAND 130 lbs. 187/- 1.44 73.5 .566 Total cost saving from suggestions made by works on universal gearbox - 4/8 1/2 | ||