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 supplier discussing a sample 6-XHR11-LL battery for testing and observations on dynamo control systems.
| Identifier | ExFiles\Box 58\4\ Scan135 | |
| Date | 20th September 1933 | |
| 86021 ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY THE Chloride ELECTRICAL STORAGE COMPANY LIMITED EXIDE WORKS, CLIFTON JUNCTION, NR MANCHESTER. LONDON OFFICE, 137, VICTORIA STREET, S.W.1. TELEPHONES: SWINTON 2011 (7 LINES) TELEGRAMS: CHLORIDIC, PENDLEBURY. CODES: BENTLEY'S, LIEBERS, A.I. AND A.B.C. (4TH & 5TH EDITIONS) OUR REFERENCE ECM/LJ. YOUR REFERENCE Hs{Lord Ernest Hives - Chair}/Wst.2/MA. WST Messrs.Rolls-Royce, Ltd., Derby. 20th September, 1933. For attention of Mr.H.E.West. Dear Sirs, We beg to acknowledge receipt of your letter of the 18th instant, recording your decision to try out the 6-XHR11-LL battery. We will have a sample battery prepared for test and examination as soon as possible. Please let us know whether a cover is necessary with this sample battery. The existing mould for the monobloc container is of French type and is not designed to take a cover. Of course, if you placed an order with us for a number of the batteries we would make a mould exactly to drawing, of which a copy is enclosed. Our experience so far with the use of vibrator dynamo control has been confined to bus lighting, and whilst it is a fact that the average working life of batteries under such control compared with the third brush dynamo system is appreciably increased, the system has inherent snags which have come out very clearly in batteries under our observation but which may never be experienced with Rolls-Royce cars. The point is that the setting of the vibrator control assumes a definite ohmic resistance in the battery, and if one cell for some reason should get out of condition, the balance is upset. For this reason it would seem a very desirable precaution to have a periodical check on the adjustment to be assured that this remains suitable. | ||