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.T. Speedometer Co., Ltd. discussing the performance of and supplying new instrument cables.
| Identifier | ExFiles\Box 164\1\ img232 | |
| Date | 25th April 1940 | |
| A.T. SPEEDOMETER CO., LTD. CHRONOS WORKS, NORTH CIRCULAR ROAD, LONDON, N.W.2. DIRECTORS: W. HENDERSON-CLELAND. SIR ALLAN GORDON-SMITH, D.L RALPH GORDON SMITH. H.{Arthur M. Hanbury - Head Complaints} R.{Sir Henry Royce} BUCKLAND. TELEPHONE: GLADSTONE 1136 (5 LINES) TELEGRAMS: AYTESPEEDO PHONE LONDON INSTRUMENT SPECIALISTS. ON ADMIRALTY APPROVED LIST FOR SUPPLY OF TACHOMETERS REVOLUTION INDICATORS, COUNTERS, SPEEDOMETERS, ETC. PLEASE QUOTE OUR REF. AFA/LAH ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. Messrs.Rolls-Royce Ltd., Nightingale Road, Derby. 25th.April 1940. For the attention of Mr. Childs. Dear Sirs, Confirming the writer's visit to your Works yesterday, the questions under discussion were timing of Clocks and Instrument Cables. It was agreed that the new cable, known as ATF.14. was definitely better than any of those at present fitted to your chassis although there was a slight waving at times of between 1 to 1 1/2 miles, it was found when the writer dismantled and re-connected it that the performance was definitely better, as the needle remained steady at all speeds. We are sending you under separate cover a further supply of this particular type of cable, six for speedometers and six for Rev.Counters, we shall be glad if you will kindly have these fitted to the various chassis you have under test when we feel confident that your present troubles you are experiencing will be overcome. It was mentioned yesterday that it is quite possible that the particular cables which are giving you trouble at the moment may be due to the fact that these cables you have shortened yourselves, and in doing so it is quite likely that the P.T.O. | ||