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).
List of specifications for engine components, including crankshafts, cylinder heads and pistons for Phantom III and Spare Test Units.
| Identifier | ExFiles\Box 155\2\ scan0178 | |
| Date | 20th December 1937 | |
| -5- Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/JH.20.12.37. Hykro crankshaft with 2 - .125 dia. holes in each pin and 2 - .2187 in each journal. Big end bearings in centri cast AC.6 with single centre hole in rod half. Cylinder block incorporating gland water joint at inlet from pump. Cylinder head increased inlet ports .080 machined off face. Klingerite 1000 gasket .032 thick 7 : 1 C.R. Aerolite piston with high press. scrapers. Rockers running direct on coppered shaft. Inlet valves in S.65 material. Nos. 1 - 6 Rm.{William Robotham - Chief Engineer}260 Tempered Spring Co. Nos. 7 - 12 EB.3256 R.R. produced. 45° angle timing gears. A.C. oil filter fed from main press. outlet to rockers. EB.3240 crankshaft with extended toes for quiet operation as Phantom III. Phantom III Units. No.3 Unit (Spare Test Unit). Obsolete type crankcase. Std. connecting rods 2, 4 and 6 - Hoyts Z.3 W/M.{Mr Moon / Mr Moore} Std. connecting rods 1, 3 and 5 - Std.R.R.W/M.{Mr Moon / Mr Moore} Std. W/M main bearings. Extra hole in crank journal. Rubber rings under top liner flanges. Camshaft Lec.5401 for non hydraulic valve gears. Nos 1, 2, and 3 tappet blocks Std. tappets. | ||