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).
Note on the decision for a positive earth electrical system for the Ripplet and a request to investigate freezing brakes.
| Identifier | ExFiles\Box 123\1\ scan0025 | |
| Date | 1st February 1940 | |
| -4- GENERAL. Positive earth electrical system. It was agreed that RC.{R. Childs} should arrange for the Ripplet now being built, should have positive earth. Brakes Freezing on. Rm.{William Robotham - Chief Engineer} asked PD. to drive a car in the snow and then leave it in the cold chamber, and investigate what part of the brake system freezes. Rm.{William Robotham - Chief Engineer} | ||