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 a battery supplier discussing potential experiments to improve chassis battery charging.
| Identifier | ExFiles\Box 54\2\ Scan181 | |
| Date | 21th July 1926 | |
| X4617E c. Wd. {Mr Wood / Mr Whitehead} EFC {E. Fowler Clarke - Electrical Engineer} 3/T. 21st July, 1926. Messrs. The Chloride Elec.Storage Co.Ltd., Clifton Junction, Nr. Manchester. For the attention of Mr. E.C.McKinnon. X4642 E Dear Sirs, Referring to our recent correspondence with you on the question of the visit of your Mr. McKinnon for the purpose of discussing chassis battery charging P.D's you have indicated that if we would be good enough to outline any useful experiments which we would like you to undertake, you would put these in hand forthwith. As previously remarked the matter is not a very pressing one, as the charging E.M.F. and P.D. of the standard chassis batteries which you supply to us do not exceed what appears at present to be reasonable. We are enclosing for your perusal a copy of a report on this question (this having also been submitted to The Peto & Radford Co.) containing graphs of results we have obtained on charging P.D's and E.M.F's of six batteries, four of which are our standard batteries. Though we do not know whether such is possible, it would be an advantage to us in the regulation of our chassis electrical system, if it were possible for the charging P.D's and E.M.F's of the batteries to keep down to a lower figure, consistently of course with the necessary efficiency of plate separation at which we have arrived. Our intention is merely to present to you a query as to whether it is physically possible to obtain the same battery's results generally as regards capacity, life, etc. etc. but with lower terminal P.D'S.(charging) Any information you have or may obtain from experiment on a reduction of charging P.D's by various modifications in the cells would be of interest to us, provided always the modifications are not of such a natur Contd. | ||