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 regarding the bench testing of two overhauled Watford IS12 aero magnetos.
| Identifier | ExFiles\Box 43\4\ Scan168 | |
| Date | 6th March 1929 | |
| RR 228 (150 BKS.) (DB{Donald Bastow - Suspensions} 451-8. 12. 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.7.C. Date: 6 - 3 - 1929 Order No.: WD{Mr Wood/Mr Whitehead}41. Customer's No.: X 4021 Watford IS12 aero magnetos Nos 98033/4. These two magnetos have now been returned to us after overhaul by messrs North's, to be fitted to type test engine F 14 - M.S. 13. We have examined these machines preliminarily and given them a short test on the bench. Both machines functioned OK with a slight exception namely that No 98034 cut out momentarily at high speeds occasionally on 5.5 mm gaps due we consider to the safety gap operating. This point should be carefully watched on the preliminary engine trials before starting. Signed: (Contd) This Sheet must be filed on completion of the work. | ||