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 electric starter position, wiring scheme, and instrument board arrangement.
| Identifier | Morton\M11\ img109 | |
| Date | 18th December 1918 | |
| To BY.DA.{Bernard Day - Chassis Design}& EH. from R.{Sir Henry Royce} -10- R7/G181218 Contd. (16) ELECTRIC STARTER. A new position is required for the starter switch, and Mr. Royce decided that this mechanism could probably best be placed on the cross member under the rear footboards, below the top of the frame. Any adjustments could be carried out by examination in position or by removing the complete unit from the chassis, which could be effected very easily by detaching the cables and undoing the strap connection securing the switch to the cross member. The heavy current leads are localised to the battery motor, and switch, and should be, of course, as short as they can be made. It does not seem possible, however, to place the starter switch in any nearer position to the motor or battery. [Diagram showing SWITCH, MOTOR, BATTERY] Mr. Hives asked that the complete wiring scheme of the car should now receive attention to avoid the general condition of untidiness in wiring matters, which seems to grow when a number of electric systems have to be carried about the chassis. Mr. Royce approved of using conduits made of aluminium tubed, baked enamelled with beaded ends, for carrying the conductors round the frame of the chassis. No conductors should be used which are not tinned, and soldering avoided where possible, and if soldered resin only should be the flux used, above all things not "Fluxite". A further stipulation regarding conductors is that they should be all of the flexible type. The regulator of Bijur type for the lighting circuit should be fixed to the dynamo. The instrument board fitted to chassis 49 GB was specially arranged to Mr. Royce's instructions, and was considered a good starting off place for developing an arrangement which should include the electric starter. (Contd) | ||