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).
Specification sheet with dimensional drawings and data for various Marelli Magneto models.
| Identifier | ExFiles\Box 4\5\ 05-page234 | |
| Date | 9th May 1921 guessed | |
| MCA 1-2-V HCR 1-2-V MHD 1-2 MG 4 MHP 6 MFT 8 MFT 12 MP 4 Dimensions of Marelli Magnetos Models: MCA 1, MCA 2-HD{Mr Hayward/Mr Huddy}, MCAV, MCB 1, MCB 2-HD{Mr Hayward/Mr Huddy}, MCBV, MHD 1, MHD 2-HD{Mr Hayward/Mr Huddy}, MP 4, MHP 6, MG 4, MF 12 Data Table: a: 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50 b: 50, 50, 50, 55, 55, 50, 50, 50, 50, 50, 50, 50 c: 145,5, 145,5, 145,5, 171, 171, 171, 228,5, 228,5, 212, 212, 238,5, 261 d: 49, 98, 98, 49, 98, 98, 51,5, 103, 96, 106, 113, 125, 138 e: -, -, -, -, -, -, -, -, 143, 164,5, 175,5, 180, 180 f: 35, 35, 35, 38, 38, 38, 45, 45, 38, 40, 45, 45, 45 g: 91, 91, 100, 75, 75, 81, 85, 85, 76, 85, 85, 85, 85 h: 115, 115, 115, 132, 132, 132, 166,5, 166,5, 132, 146, 166,5, 155, 155 i: 7, 7, 7, 9, 9, 9, 15, 15, 15, 15, 15, 15, 15 j: 48, 48, 48, 48, 48, 48, 60, 60, 48, 48, 60, 51, 44 k: 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7 l: 67, 67, 67, 80,5, 80,5, 80,5, 79, 79, 95, 49, 79, 117,5, 117,5 m: 48, 48, 48, 62,5, 62,5, 62,5, 78, 78, 83, 43, 76, 58,5, 78,5 n: 85, 85, 85, 92, 92, 92, 120, 124, 122, 122, 133,5, 157, 157 o: 23, 23, 23, 35, 35, 35, 58, 58, 33,5, 37,5, 53,5, 53,5 p: 32,5, 32,5, 32,5, 37,5, 37,5, 37,5, 48, 48, 45,5, 48, 57,5, 72, 72 q: 5 1/2°, 5 1/2°, 5 1/2°, 5 1/2°, 5 1/2°, 5 1/2°, 5°, 5°, 5 1/2°, 5 1/2°, 5 1/2°, 5 1/2°, 5 1/2° r: 6 S.L, 6 S.L, 6 S.L, 7 S.L, 7 S.L, 7 S.L, 11 S.L, 11 S.L, 11 S.L, 8 S.L, 8 S.L, 8 S.L, 8 S.L Weight in kilos: 2.600, 2.600, 2.800, 3.700, 3.700, 4.000, 5.300, 5.300, 4.700, 6.000, 7.100, 8.100, 8.800 Dimensions of conical shaft, for MCA Maximum diameter: 11 m/m — Minimum 9,6 m/m — Length of cone: 7 m/m.{Mr Moon / Mr Moore} Dimensions of conical shaft for MCB Maximum diameter: 13 m/m — Minimum 11,2 m/m — Length of cone: 9 m/m.{Mr Moon / Mr Moore} Dimensions of conical shaft, for other types Maximum diameter: 15 m/m — Minimum 12 m/m — Length of cone 15 m/m.{Mr Moon / Mr Moore} Magnetos type MCA 1, 2 MCAs are ordinarily provided with an expanded base on both sides for the easier fitting on the motor — On request said type may be supplied with the simple narrow base, and in this case the total width is reduced of 19 m/m.{Mr Moon / Mr Moore} | ||