The testing of R.O. 1 magnetos, specifically the failure of magneto No.103503 upon re-test.
| Identifier | ExFiles\Box 57\2\ Scan193 | |
| Date | 16th March 1928 | |
| EFC. {E. Fowler Clarke - Electrical Engineer} C. MX. {John H Maddocks - Chief Proving Officer} (struck through) C. Reg. (struck through) X5790 BY12/G.16.3.28. R.O. 1 MAGNETOS. Referring to EFC {E. Fowler Clarke - Electrical Engineer} 4/T.15.3.28. all R.O.1 magnetos pass through the routine test called for in your specification for testing out this magneto dated 20.12.26. Magneto No.103503 referred to in BY4/G.14.3.28. passed your test on the 26th January satisfactorily, but when re-tested on the 16th March after it was returned to Store by MX. {John H Maddocks - Chief Proving Officer} it failed to pass the test. BY. {R.W. Bailey - Chief Engineer} By | ||
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).