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 building a new Large Bore Bentley engine unit for a preliminary run in France.
| Identifier | ExFiles\Box 90\5\ scan0057 | |
| Date | 3rd September 1935 | |
| To RHC.{R. H. Coverley - Production Engineer} 4v64 Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}34/KW.3.9.35. Large Bore Bentley. We have decided to have a preliminary run in France with a large bore unit in the steel-bodied car belonging to Sales. Will you therefore please build a new unit, B-18, to the following specification :- Crankcase. Stiffened type with spread stud centres, 20/25 dynamo speed, geared starter motor, Hall's metal bearings. Crankshaft, Spring Drive & Timing Gears. Standard production. Connecting Rods. EB.2374, EB.2220/2. Hall's metal. Pistons. Aerolite with strengthened gudgeon pin boss. Cylinders. Block EB.2561. Head Ex.18392 or EB.2560 (these are identical). Flywheel & Clutch. Ex.18198, 10" Borg & Beck. Starter ring to suit geared starter. Oil Pump. Ex.11936/41. Valve Gear. BY/CS.3/EH.31.8.35. New rocker cover to be issued very shortly. Other Particulars. As for B-16 in RHC{R. H. Coverley - Production Engineer}/JR.{Mr James Royce}2/EP.{G. Eric Platford - Chief Quality Engineer}8.8.35. Hs{Lord Ernest Hives - Chair}/Om | ||