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).
Specifications and test data for engine components, including material composition, valves, induction pipes, and carburettors.
| Identifier | ExFiles\Box 124\2\ scan0207 | |
| Date | 5th July 1940 | |
| -9- Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}4/JMS.5.7.40. Sulphur .04 Phosphorous .04 Chromium 12 - 13 Nickel 12 - 14 Tungsten 2.0-2.5 TESTS. Tensile. Weight 55 tons. Elong'n. 18% R.{Sir Henry Royce} in A.{Mr Adams} 50% Izod 45 - 50 ft/lbs. Note. Further to the above, valves on order for future development are: From Doncasters. EB.5210. Exhaust valves in XLO mat'l. 100 off. EB.3853 Inlets " " 3 1/2% Nickel (569) 50 off. EB.3853 " " " S.65 - 50 off. The above 200 forgings were despatched to Motor Components for machining in April (1940). It is worth recording, that, from time to time we have varied the shape of the valve head, and we know that a generous tulip shaped inlet valve is worth approx. 5% top power over a normal flat headed valve. INDUCTION PIPE. B.60. Stromberg: RE.147: 1.125 SQ. section. 2 S.U's. As B.V.- 1.60 dia. bore. B.80. Stromberg: RE.992 - 1.350 SQ. section. 3 S.U's. New detail drawings required (see report by Caisley). CARBURETTOR. S.U. As production B.V. Stromberg. (a) Specification: see Rm{William Robotham - Chief Engineer}/TAS.{T. Allan Swinden}1/J.Mc.2.6.40. (b) External finish " Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}9/ML.19.2.40. " Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}6/R.4.10.38. Note. We managed to accumulate a small stock of both the above types of carburettor. - Sufficient to cater for the rationalised range of engines instructed to the shop. | ||