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).
The specifications for the Dynamo, Spare Wheel, Shock Dampers, and Water Cooling System.
| Identifier | Morton\M14\ img012 | |
| Date | 18th September 1922 guessed | |
| support stays provided with the chassis, and by using these the wiring is enclosed, and invisible. (Q). DYNAMO. This has third brush control and cuts in at an extremely slow speed, giving an output which rises rapidly at first (for night running) and afterwards falls at high speed to avoid over-charging the battery. It runs with great silence and runs at the highest speed without excessive heat, and is easily dismounted for cleaning and inspection. It is controlled by an effective automatic switch mounted on the distribution board which is in an accessible position. (R) SPARE WHEEL. Is securely carried at the back of the chassis on a tubular carrier with aluminium shoes in which the tyre rests. It is important to carry this spare in this position so that its weight can be utilised to make the road wheels more effectively hold the road. (S) SHOCK DAMPERS. These are fitted to both front and rear axles. They are of RR. construction and the back ones are of the progressive type; they do much to render the car steady and safe at high speeds without unduly causing harsh riding at low speeds. (T) WATER COOLING SYSTEM. The radiator of the honeycomb type is of ample size and is fitted with a set of shutters, under the driver's control so that the water temperature can be maintained in cold weather. Close behind the radiator an efficient fan is mounted on a spring controlled support which maintains a constant tension in the Vee belt over a large range of movement. The water is circulated by a centrifugal pump fitted with a special form of lubricated double gland (aptent applied for) which is remarkable for water retaining, and absence of wear. There is a thermometer fitted with a gauge on the instrument board thus giving complete indication and control of the water temperature, which so largely contributes to efficient running and low petrol consumption. | ||