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).
Letter to Mr. Minchin of Peto & Radford concerning the development of an auto switch and regulator for the electrical system.
| Identifier | ExFiles\Box 59\1\ Scan215 | |
| Date | 19th December 1927 | |
| X 4008 EFC2/T. 19th December, 1927. Mr. G.R.N.Minchin, Messrs. Peto & Radford, Grosvenor Gardens, London, S.W.1. Dear Mr. Minchin, Thank you for your letter M/5 of the 14th inst. I had not seen the article - for which many thanks - but I agree with you that these things are not very much use. They are only voltmeters and the indications are upset by the amount of charge and the amount of load on the electrical system. In answer to your query as to how we are getting on with the regulator, I am sending you in confidence (because we are putting through an application for a patent) the various reports recently issued, which contain the full state of affairs. Mr. Royce is very interested in this progress and has asked for and has one of this later type of auto switch on the car he is now running in France. We are putting further units on our experimental cars. Your second paragraph is a valuable bit of evidence to us. This coming from you, we are taking it without any grains of salt, as we should be inclined to do had it come from someone in whom we had not the same degree of confidence. At the same time, we do get complaints from customers (we have one at present) of not being able to keep their batteries charged on account of a good deal of high speed running at night, with the normal output of the machine. We can only conclude that it is a physical impossibility without an auto switch to arrange to meet all cases properly. With the auto switch we shall probably Contd. | ||