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).
Providing particulars of the gear ratios and torque capacity for the small Cotal gearbox.
| Identifier | ExFiles\Box 136\2\ scan0236 | |
| Date | 18th March 1940 | |
| 1153. Ev.{Ivan Evernden - coachwork} Rm.{William Robotham - Chief Engineer}3/ML.18.3.40. Herewith particulars of the gear ratios and torque carrying capacity of the small Cotal box, the drawings of which we gave you on Saturday. Rm.{William Robotham - Chief Engineer} | ||