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. about an alteration to the electrical performance of E.W.6 Magnetos.
| Identifier | ExFiles\Box 65\3\ scan0353 | |
| Date | 12th April 1929 | |
| E7C H.E.W. X7791 SPEEDOMETERS THE BRITISH MADE Watford MAGNETOS. NORTH & SONS, LTD. WHIPPENDELL ROAD, WATFORD. TELEPHONES: LONDON 1346 GERRARD WORKS, 422 & 423 WATFORD. TELEGRAMS: AEROMAGS WESTCENT LONDON AEROMAGS WATFORD. CONTRACTORS TO THE ADMIRALTY, WAR OFFICE CROWN AGENTS FOR THE COLONIES, INDIA OFFICE. Governing Director: R.{Sir Henry Royce} B. North Director & Works Manager: C. H.{Arthur M. Hanbury - Head Complaints} Kirby. Secretary F.{Mr Friese} Stockwell Our Ref. CHK/HWJ/VS.{J. Vickers} Your Ref. Roy{Sir Henry Royce}/Dn8/BH. 12th. April 1929. Messrs. Rolls Royce Ltd., DERBY. Dear Sirs, For the attention of Mr. Fowler Clark. In connection with your esteemed order No. 87865 calling for three right hand E.W.6 Magnetos required for Experimental Work our Mr. Allen has asked us to call your attention to an alteration we have been able to effect in the electrical performance of these machines. The three magnetos in question will spark regularly over a three point 5 1/2 m/m gap at a speed of 33 R.P.M. fully advance and 110 R.P.M. when retarded 60o. The magnetos; Nos. 117445, 117446, 117447, were sent to you on the 8th. inst. and will already have been delivered. Yours faithfully, p.p. NORTH & SONS LIMITED., RECEIVED (STAMP) | ||