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).
Investigation report into a Magneto unit that was cutting out during endurance tests.
| Identifier | ExFiles\Box 165\4\ img380 | |
| Date | 1st October 1936 | |
| INVESTIGATION REPORT. Customer:- Rolls Royce Ltd. Derby. Unit. Magneto Type & Serial No. S.P. 12-3. L.H. Serial No. 141323. Reason for report. Cutting out on endurance tests at normal engine speed. Test Results. As received. M.S.S. adv. 175 R.P.M. M.S.S. ret. 250 R.P.M. High speed adv. 4,500. R.P.M. High speed ret. 4,500. R.P.M. As despatched. M.S.S.adv. 140 R.P.M. M.S.S. ret.250 R.P.M. High speed adv. 4,500 R.P.M. High speed ret. 4,500 R.P.M. REPORT. This machine was put on test for 3 hours continuous running at 4,500 R.P.M. to become thoroughly warmed up and then tested at all speeds below 4,500 R.P.M., and no fault or defect could be found with its performance. Apart from Contact Breaker cover (fitted from another magneto) machine is mechanically sound. SIGNED... [Illegible Signature] CHIEF INSPECTOR, ROTAX LIMITED. AGREED... [Illegible Signature] INSPECTOR IN CHARGE, A.I.D. at ROTAX LIMITED. [STAMP: AERONAUTICAL INSPECTION DIRECTORATE, 7 OCT 1936, ROTAX LTD.] HAC/EP{G. Eric Platford - Chief Quality Engineer} 1/10/36 | ||