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).
Proposing a two-unit design for the vibrator control and distribution board to save time and cost by using existing dies.
| Identifier | ExFiles\Box 50\1\ Scan143 | |
| Date | 14th November 1932 | |
| X6014. To F. {Mr Friese} From E. {Mr Elliott - Chief Engineer} WST E.1/HP.14.11.32. c. Mr. Hor His. Mr. Par. re Vibrator Control, Distribution Board etc. ---------------------------------------- Further to our memo E.9/HP.11.11.32, we should be glad if you would disregard D. {John DeLooze - Company Secretary} Sch. 592 for the time being, as we have been going over this job again, and we believe it will be better to split up the apparatus into two units. This will enable us to make use of some existing dies, which are expensive, and take a long time to produce, and should it prove that the vibrator control is not satisfactory it enables us to re-convert to the third brush dynamo scheme with the minimum of alteration. The big die that D. {John DeLooze - Company Secretary} Sch. 592 requires would take a considerable time to produce, and be at the same time rather costly, and there is the risk that it may never be used. With the two unit scheme we propose to house the vibrator unit and its resistance on a simple moulded base requiring a new die, but use the same moulded cover that we have had for some considerable time on our automatic starter switch. The cover die, as a matter of fact, is the one that gives most trouble. For the distribution board we propose to utilise a die that we have had in existence for some time; it was made for the original automatic control scheme, and is longer than our standard distribution board. With the automatic control unit removed there is sufficient room for the cutout, the RR. fuses, and a section for the coachbuilder. Only simple modifications would be necessary to these dies, and these could be easily carried out as the dies are still unhardened, having been used only six times for the old control scheme. We believe this two unit proposal would rather meet with your views, and in fact you have already sounded a note of caution in connection with proceeding with all the apparatus in one unit. We propose to mount the two units on a common aluminium base, and this will enable us to make, if we desire, the connections between the two bases from behind, but all cables flowing in from outside will naturally be brought through port holes in the usual manner, and connections made to terminals | ||