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 for engine components including bearings, connecting rods, pistons, and camshafts.
| Identifier | ExFiles\Box 126\5\ scan0140 | |
| Date | 8th March 1938 guessed | |
| - 3 - BEARINGS - cont'd.{John DeLooze - Company Secretary} No.4 2.479 Dia. x 1.100 wide. No.5 2.479 Dia. x .850 wide. No.6 2.479 Dia. x .850 wide. No.7 2.479 Dia. x 1.500 wide. CONNECTING RODS. (SS.{S. Smith}24). Steel (Forged Finish). Big ends white metalled in steel shells. Rod rifle drilled for gudgeon pin lubrication. Gudgeon pin bore in rod .875 Dia. Big end dia. 2.086. PISTON. (SS.{S. Smith}23). Aerolite Type C.290 Length of piston 3 3/8 and 23/32 from centre line gudgeon pin to top of piston. Pin Dia. .8744. Gudgeon Pin is held in position by 2 circlips. 1 Scraper and 2 compression rings fitted above gudgeon pin. Weight of complete rod with big ends, piston etc. Piston End = 1 lb. 10 1/2 ozs. Big end of Rod = 1 lb. 6 ozs. CAMSHAFT. (SS.{S. Smith}17). The camshaft is machined all over and is supported in four white metal bearings in steel shells. Bearing located by set screws (one in each). Brinell - Cams 752 Bearings 780. Camshaft drives oil pump and distributor by skew gears. Camshaft is driven by Renolds Single Roller Chain .375 Pitch. .225 Wide. | ||