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).
Material analysis and weight distribution for the Vulture II engine sections.
| Identifier | ExFiles\Box 132\2\ scan0117 | |
| Date | 21th August 1940 | |
| VULTURE II. MATERIAL ANALYSIS. Section. | % of total Engine weight. | Total Weight of Section (lbs). | Material distribution through Section (Alum %) | Material distribution through Section (Brass Bronze %) | Material distribution through Section (Steel %) | Material distribution through Section (Mag. %) | Material distribution through Section (Others %) | Material distribution through Engine (Alum %) | Material distribution through Engine (Brass Bronze %) | Material distribution through Engine (Steel %) | Material distribution through Engine (Mag %) | Material distribution through Engine (Others %) 4000 C/Case & Bearings | 15.3 | 379.1 | 64 | 3 | 33 | Negl. | Negl. | 23 | 16 | 11 | 16 | Negl. 4010 Crankshaft | 5.4 | 133.0 | Neg. | - | 100 | - | - | Neg. | - | 11 | - | - 4020 Piston | 3.3 | 81.9 | 70 | - | 30 | - | - | 5 | - | 2 | - | - 4030 Conn.Rods | 4.2 | 105.3 | - | 5 | 95 | - | - | - | 9 | 8 | - | - 4040 Valve & Fittings | 2.2 | 54.8 | - | - | 100 | - | - | - | - | 5 | - | - 4050 Cylinders | 21.7 | 539.3 | 63 | 2 | 33 | - | 2 | 32 | 16 | 15 | - | 6 4070 Wheelcase | 2.9 | 72.1 | 83 | 1 | 13 | - | 3 | 6 | 1 | 1 | - | 1 4090 Camshaft Drive | 1.2 | 30.5 | 39 | - | 61 | - | Neg. | 1 | - | 2 | - | Neg. 4160 Mag & Dist.Drive | 1.9 | 48.3 | 3 | 1 | 11 | 85 | Neg. | Neg. | Neg. | Neg. | 27 | - 4170 C/Shaft & Rocker | 4.2 | 104.8 | 23 | 1 | 76 | - | - | 2 | 2 | 7 | - | - 4240 Reduction Gear | 14.8 | 367.7 | 29 | 1 | 70 | Neg. | Neg. | 10 | 6 | 22 | 3 | Neg. 4260 Induction Pipe | 3.6 | 88.4 | 72 | 1 | 6 | - | 21 | 6 | 2 | Neg. | - | 12 4270 Coolant Conns. | 1.3 | 32.6 | 33 | 12 | 52 | - | 3 | 1 | 6 | 1 | - | 1 4330 Ignition Harness | 2.0 | 49.1 | 1 | 18 | 7 | 6 | 68 | Neg. | 14 | Neg. | 78 | 22 4400 Supercharger | 4.5 | 110.9 | 80 | 2 | 17 | - | 1 | 8 | 4 | 2 | - | 1 4410 Supercharger Driving | 3.6 | 88.4 | 11 | 2 | 85 | - | 2 | 1 | 2 | 6 | - | 1 All other Sections | 7.9 | 191.8 | | | | | | 5 | 22 | 7 | 3 | 29 Engine total by adding detail weights | 100 | 2480* | 42.9 | 2.9 | 48.3 | .14 | 6.16 | 100 | 100 | 100 | 100 | 100 "Standard Nett Dry Weight | | 2455* Alum - includes all grades - Aluminium, Duralumin, Birmabright etc., Brass - includes all grades - Brass, bronze, delta metal, dixtampo, Bronze & everdur. Steel - includes all grades - Iron & steel. Others - includes all other materials and composite pieces ( carburetter, flame traps, magnetos, etc.) .................... | ||