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).
Outlining proposed modifications and required equipment for the No. 4 Test House.
| Identifier | ExFiles\Box 143\1\ scan0204 | |
| Date | 4th November 1936 | |
| To - EJJ. c. to Rm.{William Robotham - Chief Engineer} X1209 Wd.{Mr Wood/Mr Whitehead}1/GB.4.11.36. No.4 TEST HOUSE MODIFICATIONS. We are anxious to re-arrange this test house in order to accommodate a second blower and possibly a third Exe single cylinder unit. This will necessitate the small Universal Unit being transferred to No.31 test house and the ordering of new electrical tackle. Will you please look into this re-arrangement and let us have, as early as possible, a quotation for the supply of the new equipment and an approx. delivery date. We also wish you to put in hand at the same time an improvement of the present arrangement of Lawrence Scott Dyanmometers now in use in the test house. These machines obtain the D.C. for their field excitation from the small Power house by the gates of the experimental dept. Owing to the fluctuation of load on this D.C. line we are experiencing considerable trouble due to the small variations in E.M.F. varying the loads on the dynamometers. We suggest that each dynamo be provided with a small motor generator set for the purpose of supplying the excitation current and thus eliminating variation in E.M.F. You have a quotation for the equipment necessary to achieve this. The new items required to complete the re-arrangement proposed are as follows :- 1 - 75 H.P. Lawrence Scott Dynamometer. 1 - Control Panel. 1 - Contactor Box. 1 - 50 H.P. Lawrence Scott Booster set. 1 - Allen West Starter. 3 - Lawrence Scott Motor Generator Sets. 3 - Starters. 1 - 50 HP. B.T.H. Blower Motor. 1 - Control Panel. 1 - 30 H.P. B.T.H. Booster Set. 1 - Starter. 1 - Keith Blackman H.E. Fan with direct coupled motor. 1 - Starter. 1 - B.T.H. Elliott Electrical Rev. Counter 0 - 6000 R.P.M. | ||