Test results table for E.W.6 Magneto with different numbered armatures.
| Identifier | ExFiles\Box 65\3\ scan0357 | |
| Date | 16th April 1929 guessed | |
| E.W.6. Magneto. X7791 Armature | N°2 | N°8 | No1 | N°1 | N°7 | 17° R.p.lot. | 17° R.p.lot. | 10° R.p.lot. | 17° R.p.lot. | 17° R.p.lot. High speed | 5000 | 5,000 | 5,000 | 5,000 | Low speed (A) | 70 | 50 | 70 | 70 | 60 (30°) | 100 | 70 | 110 | 95 | 90 (R°) | 170 | .130 | 180 | 110. | 160 Leak | | | | | Advance Lead 1 | 3,000 | 2,000 | Cutting out | 5,000 | -- (High) " 2 | 3,000 | 3,200 | " " | 2,800 | -- Retard " 1 | 500 | 380 | 360 | 500 | 460 (Low) " 2 | 360 | 360 | 320 | 400 | 510 Contact Breaker | Normal. | Normal | Normal | | | ||
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).