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 North & Sons, Ltd. regarding the results of type testing on magnetos, one of which showed irregular sparking.
| Identifier | ExFiles\Box 43\4\ Scan274 | |
| Date | 7th April 1930 | |
| X.4021 SPEEDOMETERS THE BRITISH MADE Watford & MAGNETOS. NORTH & SONS, LTD. WHIPPENDELL ROAD, WATFORD. CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, AIR MINISTRY, CROWN AGENTS FOR THE COLONIES, INDIA OFFICE. TELEPHONES: LONDON 1346 GERRARD WORKS: 422 & 623 WATFORD. TELEGRAMS: AERONAGS WESTCENT LONDON AERONAGS WATFORD. Ref. CHK/VS{J. Vickers} Your ref. EFC2/AD 7th. April 1930. Messrs. Rolls-Royce Ltd., Derby. For the attention of E.Fowler Clark Esq. Dear Sirs, We thank you for your letter of the 3rd. inst. with copy of report WE.13 relating to magnetos 98033/4 which have been subjected to type test on one of your F type engines, and are pleased to note the good condition of the contact breakers and distributors on completion of the test. We regret that the bench test of magneto 98034 after completion of the type test shows irregular sparking in the fully retarded position. It is not possible to make any suggestion as to the cause of this without making a full examination of the magneto, but if you can conveniently send it to us we shall be pleased to examine and report on it without delay and return it to you as quickly as possible. Yours faithfully, p.p. NORTH & SONS LIMITED, E H Worby MANAGING DIRECTOR. | ||