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 from a battery manufacturer discussing charging rates, generator output, and cell materials.
| Identifier | ExFiles\Box 54\2\ Scan080 | |
| Date | 18th December 1925 | |
| X4627 DIRECTORS. SIR ARCHIBALD. G. {Mr Griffiths - Chief Accountant / Mr Gnapp} GOLD. F.C. GRAHAM MENZIES G.R.N. MINCHIN. WILLIAM PETO. C.R.D. PRITCHETT. T.W. PRITCHETT. Telephone Nº. RAINHAM 34. Telegrams: "PRITCHETT, DAGENHAM" CODES USED: BENTLEYS, OR A.B.C. 5TH EDITION. PRITCHETT & GOLD AND E. {Mr Elliott - Chief Engineer} P. S. COMPANY, LIMITED. WITH WHICH IS INCORPORATED THE BUSINESS OF PETO & RADFORD. ESTABLISHED 1882. MANUFACTURERS OF STORAGE BATTERIES. LONDON OFFICE. 50, GROSVENOR GARDENS. VICTORIA, LONDON, S.W.1. Please reply to Dagenham Dock, Romford, ESSEX. Station: Dagenham Dock, (Mid. Rly. Tilbury Section) YOUR REFERENCE OUR REFERENCE KP/4. 18th December, 1925. E. {Mr Elliott - Chief Engineer} Fowler Clark Esq., Messrs. Rolls-Royce Ltd., Derby. Dear Mr. Fowler Clark, I thank you for your letter of the 16th inst. which has been forwarded from our London Office. Will you please address any further communications to Dagenham Dock? I can confirm Mr. Minchin's statement that there was apparently not much difference in the charging rate on his car with the Exide battery fitted, but I agree with you that it must exist when observed under comparable conditions. From the figures you gave us the charging rate on a P. & R. {Sir Henry Royce} would be about 10% higher than the Exide. I also agree that in a general way the P. & R. {Sir Henry Royce} charging P.D. is higher and it is desirable to effect a reduction, which I think can be done. I am glad to note that you have arranged to reduce the peak generator output in future chassis, which I think is a satisfactory compromise having regard to the varied requirements of battery service. With regard to the celluloid cells in your house, when I referred to the risk of fire I had in mind cases where this had occurred with celluloid cells leaking when on charge on D.C. mains. On further consideration, I am inclined to -1- Yours sincerely, F. {Mr Friese} Preston. | ||