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).
The production tests and failures of six Watford EW6 magnetos.
| Identifier | ExFiles\Box 65\3\ scan0187 | |
| Date | 7th February 1928 | |
| RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 451-8-12-24) MP 306975 X7791 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.C Order No.: WC71 Customer's No.: X 7791 Production tests of Watford EW6 magnetos. We have now completed in all six production tests on Watford EW6 magnetos. The first three tested Nos 100080/1/2 (sent to us for experimental test) pass our production test completely with the one slight exception that the H.T safety gap was below the limits. The second three however Nos 100093/4/7 (the first production machines) did not pass our specification, the retarded low speed figure being too high, the safety gap too small, and the cam ring tight (in one case, No100094, the oil relay would not function when the magneto was fitted). Signed: contd. This Sheet must be filed on completion of the work. | ||