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 for the assembly and testing of engine units No. 12 and No. 13.
| Identifier | ExFiles\Box 155\2\ scan0180 | |
| Date | 20th December 1937 | |
| -7- Unit No.12. To be assembled for torsion tests with Summers Indicator. Std. production crankcase. Std. crank with special grinding for indicator. Std. W/M main and big end bearings also std. connecting rods. Proposed std. camshaft for non hydraulic tappets LeC.5401 No.1, 2 and 3 tappet blocks std.tappets. No.4,5, and 6 tappet blocks non plated, tappets in S/ZN cloudburst. A side tappets with bottom springs K.88500 B side without. Solid rocker gear LeC.5441 with oil feed to suit LeC.5444 Rm. {William Robotham - Chief Engineer} 380/1/2 modifications to rocker oiling. Single valve springs A side EB.3256 Swedish wire. B side Rs. {Sir Henry Royce's Secretary} 540 with Rm. {William Robotham - Chief Engineer} 400 top washers. 4 port heads and induction system. E.88447 latest KE.965 valves with solid stem inlet valves E.88782 Unit No.13. Test bed preparatory to fitting in 32-EX. Std. prod. crankcase. Front centre and rear main bearings in std. W/M. Inter mains in A.C. 6 material. Standard crank but in Hykro. Big end bearings (EX.28937/8) A.C.6 Hall's bushes for forked rods W/M std. blade rod bearing. Thin section water pump coupling. plates E.89188. | ||