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).
Design, performance, and testing of a Watford magneto.
| Identifier | ExFiles\Box 49\5\ Scan163 | |
| Date | 19th July 1922 | |
| X.4279. -1- X.430. FORM FOR RECORDING DETAILS OF MAGNETO DESIGN AND PERFORMANCE. Date:- 19.7.22. Magneto on test. Maker :- Watford. X. No. :- 4275. Type :- E.L.O.6. No :- 55044. (1) Weight in pounds. 17.7 (2) Remarks re mechanical and electrical design and noisiness of operation. Larger armature. Surface screw terminals on distributor cover. Distributor cover secured by four screws instead of two. Long bolt running through top of machine clamping magnet between front and rear end plates. Armature enclosed. Larger contact breaker spring. Contact breaker lever bush made of Continental Bakelite, but rubbing block still of red fibre. Machine rather noisy at high speeds chiefly due to contact breaker and movable sleeve. (3) Radial air gap (inches) :- * * * (mm) :- Unobtainable. 8.3.21. | ||