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 analysis for Leyland and Wraith gearboxes.
| Identifier | ExFiles\Box 140\3\ scan0243 | |
| Date | 17th March 1939 | |
| -2- 17.3.39. GEARBOX. Mat. Lab. Leyland 130 lbs. £9/7/- £3/13/6 Wraith 90 lbs. £9/19/8 £11/8/2 Mat. Lab. Leyland 187/- 73.5/- Wraith 199.7/- 228.2/- Cost/lb. 187 / 130 = 1.44 .566 199.7 / 90 = 2.2 2.54 Rm.{William Robotham - Chief Engineer} | ||