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 concerning the excessive point burning on a type 808 sparking plug due to a purposely tapered central electrode.
| Identifier | ExFiles\Box 162\4\ img048 | |
| Date | 8th May 1934 | |
| 81918R. TELEPHONE: PUTNEY 2671-2-3-4. TELEGRAMS: KAELGEE PHONE LONDON CONTRACTORS TO THE ADMIRALTY - WAR OFFICE - AIR MINISTRY & FOREIGN GOVERNMENTS CODES USED { A.B.C. 5TH EDITION. WESTERN UNION K.L.G. Sparking Plugs Limited MAKERS OF JIGS AND PRECISION TOOLS SOLE MANUFACTURERS OF K L G.{Mr Griffiths - Chief Accountant / Mr Gnapp} SPARKING PLUGS ROBINHOOD ENGINEERING WORKS PUTNEY VALE . LONDON . S.W.15 IN YOUR REPLY PLEASE REFER TO TECHNICAL DEPT AND QUOTE REFERENCE CMC/MEN. 8th May, 1934. Messrs. Rolls-Royce, Ltd., Derby. Gentlemen, For the attention of Mr. West - Hs{Lord Ernest Hives - Chair}/Wst.2/MA. We have now examined the type 808 sparking plug referred to in your letter of May 2nd and quite agree that the amount of point burning is very excessive. We would point out, however, that this point burning is not quite so bad as it appears at first glance because we purposely tapered the end of the central electrode as we thought this might improve the slow running qualities of the plug. This now appears to have been a mistake and we are making up twelve more of these plugs with the central electrode of normal diameter. We hope to send these to you for test very shortly. Yours faithfully, p.p. K.L.GL{G. Linnett} SPARKING PLUGS LIMITED. [Signature] Director. | ||