Rationalisation of electrical equipment by using modified Goshawk components on the 40/50 chassis.
| Identifier | ExFiles\Box 183\M22\ img149 | |
| Date | 1st June 1922 | |
| [Handwritten annotation at top] He puts to R some sensible rationalisation ideas, to use some Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) electrics on the 40/50. THESE IDEAS WERE LATER EMBODIED AND PROVED ON GEX AND PUT INTO PRODUCTION [Stamped] ORIGINAL [Distribution List] To R. {Sir Henry Royce} from Hs. {Lord Ernest Hives - Chair} c. to CJ. c. to E. {Mr Elliott - Chief Engineer} c. to Du. c. to BY. {R.W. Bailey - Chief Engineer} c. to RF. c. to LRM. [Heading and handwritten numbers] 40/50 CHASSIS. X4165 ELECTRICAL EQUIPMENT. √3461 [Main Body] X4338 It will be necessary at no distant date to order up fresh material for some parts of the 40/50 HP. Chassis. We consider that we should not go on perpetuating the present electrical equipment on the 40/50 now that we have got something much better of our own design on the Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)). It would appear inconsistent for us to fit our own electrical equipment to the smaller car and to buy outside equipment for the more expensive large car. Except for one or two minor modifications it is difficult to see why most of the electrical equipment designed for the Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) could not be used on the 40/50. * DYNAMO. The requirements as regards lighting load and ignition load are identical on the two cars. The starter load would be greater on the 40/50 especially with a cold engine. We consider this would be provided for by the larger battery. The dynamo revs. per mile are greater on the Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) so that it might mean modifying the present Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) Generator. If this could be done by lengthening it, a great number of existing parts could still be used. You will remember that owing to the modification of the winding we have saved on appreciable amount of end room on the machine which might be used to increase the output of the carcase. There is no reason why our generator could not be now driven by a pulley and slung in the same manner as the present Lucas machine. contd:- | ||
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).