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).
Continental Phantom III specification detailing proposed and achieved weight savings for various components.
| Identifier | ExFiles\Box 92\6\ scan0013 | |
| Date | 29th August 1936 | |
| Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/KW.29.8.36. Continental Phantom III Specification. SECTION WEIGHT SAVING. actually achieved. (1) Frame. Wraith Thickness. Additional 60 lbs. 65 (2) Aluminium in front suspension 40 lbs. 24 (3) Magnesium Gearbox, Clutch Pit, Bottom Half, etc. 30 lbs. 25 (4) Substitute Ph.II Continental rear Road Springs for Ph.III Springs 40 lbs. 48 (5) Engine Unit - at least → +20 45 lbs. 65 (6) Electrical. Use 20/25 Dynamo and Battery 20 lbs. 20 (7) Flexible Flywheel 20 lbs. 0 (8) Exhaust System 50 lbs. 50 (9) Brake layout, light alloy rear drums 40 lbs. 64 (10) Petrol Tank 5 lbs. 8 (11) Steering Gear & Levers 10 lbs. 19 (12) Radiator + Bonnet 20 lbs. 40 (13) Lockheed Jacks instead of [struck through: Sessions.] 95/- 20 lbs. 20 (14) Lightened Bumper Bars 15 lbs. 14 NIL (15) Body Brackets 415 lbs. or 3.7 cwts. Hall's Metal Big End & Main Bearings. Addition of Potential 17 LBS 8-33 Axle ratio. Crawl with Pacardsols 4 LBS Elimination of oil cooler It has been demonstrated in France that owing to the stiff frame and improved suspension of the Ph.III, aluminium wings can be used with impunity. There is a further potential 40 lbs for 14" front drums | ||