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).
Graph showing the variation of O.C. volts with the hand lever position for a B.T.H. Magneto Type FM6.
| Identifier | WestWitteringFiles\N\2October1925-December1925\ Scan276 | |
| Date | 8th November 1925 | |
| B.T.H. MAGNETO TYPE FM6 NO 356,071 CURVE SHOWING VARIATION OF O.C. VOLTS WITH POSITION OF HAND LEVER ON CAM NOTE. SLEEVES RIGIDLY FIXED TO LEVER. VOLTS. (SPEED CONSTANT) 9.0 8.5 8 ADVANCE. 10° 20° 30° 40° RETARD. LEVER POSITION. POSITION OF MAXIMUM FLUX THROUGH ARMATURE. H.E.W. 16-11-25 E7c 8.11.25 | ||