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).
Instruction to abandon experimental work on a vibratory regulator and focus on a simpler third-brush dynamo design.
| Identifier | WestWitteringFiles\F\February1921\ Scan92 | |
| Date | 28th June 1933 | |
| Handwritten Annotations: Top Left: R.{Sir Henry Royce} S.IS/EC/OTH Top Right: from H, COPY TO EC. { BY H Main Annotations: Reduction in Exp. work Abandon all work on Vibrating Mott TO EFC { dynamo control & stop attempting to design one 3rd brush & single field will do all X you desire (on 20 . 40/50 HP) Concentrate on this Left Side: EFC c D4 c CJ Stamped: RECEIVED 28 JUN 1933 Typed Content: RE VIBRATORY REGULATOR. As it will now be necessary to detail so much experimental work in your department, I think it will be as well if you will abandon all experimental work on vibratory regulators. I also find that time has been spent on attempting to design a vibratory regulator and cutout; this also should be stopped. Apparently the dynamo with third brush and single field circuit for the third brush will do all you desire, and is the simplest arrangement. Can we not adopt this on the dynamos we are obtaining and making for trial on 40/50 H.P. and "Hawk II": concentrate on this. .R | ||