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).
Modifications and specifications for Lucas regulators and control units.
Identifier | ExFiles\Box 166\2\ img170 | |
Date | 11th February 1938 | |
-2- tools. Mr. Toulmin of Lucas is looking into this question, and will let us know to what extent this will be, as soon as possible. If it were decided to completely change over to this type of regulator, two or three hundred units now in Lucas stock would be scrapped. On the other hand, if the higher setting only would satisfy, these could be modified without much trouble. With regard to the output current, Mr.Robinson stated that he must have a tolerance of at least 4 amperes, to which we agreed. We then discussed the L.R.7. type regulator which is to be built with an R.R. cut-out on the one baseboard, to form a complete control unit. In view of the recent battery problems it is decided that the existing setting on these units is too low, and Mr.Robinson agreed to increase this from the original figure of 15.3 - 15.8 volts to 15.8 - 16.4 volts, the load aimed at to be 16 - 20 amperes at 13.5 volts. In this type of regulator the split series winding will give the battery an increased charge for a fixed load on the dynamo. Mr. C.E.Robinson is retaining for the time being, the unit for the second B.lll in order to obtain the required characteristics. At the same time he is arranging for the fixed resistances to be built up behind the base, as in their final position. We have provided for this purpose a sub-base. This unit has been promised for the end of next week. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} | ||