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).
Instructions detailing further tests on the effect of H.T. lead length on magneto sparks.
| Identifier | ExFiles\Box 4\5\ 05-page225 | |
| Date | 2nd December 1921 | |
| RR.238 (500 Bks.) (SP{Mr Spinney} 17.3. 4-11-18.) MP 1978/18 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.E.C. Order No. P.B. 29 Customer's No. X 430 Dec 2nd 1921 Effect of Length of H.T. Lead on Magneto Spark. Further tests have been made on the same magneto, Watford E.C N°45168; the length of cable this time being increased from 4 ft, by 2 ft lengths, up to 20 ft. The method of procedure was the same as in the previous tests. There is still no consistent variation in the sparking speed. Generally the earthed side appears to get a little worse, but at the same time still compares favourably with the insulated side. Signed Cont'd.{John DeLooze - Company Secretary} This Sheet must be filed on completion of the work. | ||