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).
German limited-movement differential device and its suitability for passenger cars versus military vehicles.
| Identifier | ExFiles\Box 2\6\ B002_X 140 141 157-page103 | |
| Date | 23th December 1927 | |
| To W/S from Ha/Rm.{William Robotham - Chief Engineer} X140 Ha/RmL/LG23.12.27. German device We regret that we have retained the specification of this differential so long. The device is an arrangement for allowing limited movement of the differential so that the car will not get stuck unless both driving wheels are spinning. While we consider that such a device would be worth while on a military vehicle, we do not think the additional complication is justifiable on our cars at the moment. Ha/Rm.{William Robotham - Chief Engineer} | ||