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 Rotax Limited requesting details of spark plugs used in aero engines for voltage testing purposes.
| Identifier | ExFiles\Box 58\2\ Scan253 | |
| Date | 8th November 1935 | |
| ROTAX LIMITED AVIATION DEPARTMENT WILLESDEN JUNCTION LONDON N·W·10 TELEPHONE WILLESDEN 2480 (Pte Bch{F. H. Birchmore - Chassis Delivery Manager} Ex) TELEGRAMS RODYNALITE PHONE LONDON DIRECTORS: PETER F.{Mr Friese} BENNETT. OLIVER LUCAS. F.{Mr Friese} H.{Arthur M. Hanbury - Head Complaints} WALKER. A.{Mr Adams} B. WARING. A.{Mr Adams} G.{Mr Griffiths - Chief Accountant / Mr Gnapp} BENSTEAD. Handwritten: 86,000. Handwritten: WST VG/LR{Mr Ellor}/AVIATION. 8th November 1935. Messrs. Rolls-Royce Limited. DERBY. For the attention of Mr. West. Dear Sirs, We should be obliged if you could let us have details of the sparking plugs which you use in your aero engines, together with the gap settings and the compression ratios. We require this information in order that we may carry out some voltage tests, and if you have any test figures which you could send us, we should be pleased. Could you supply us with say two of each type of plug, or would you prefer us to buy them from the manufacturers? We would of course send you an order for whatever we require. Yours faithfully, For ROTAX LIMITED. [Signature] Aviation Department. "Watford" AIRCRAFT MAGNETOS | ||