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).
Revisions to a chassis specification by listing 18 changes to be incorporated into the engine.
| Identifier | ExFiles\Box 82\3\ scan0007 | |
| Date | 18th May 1934 | |
| To RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}15/KW.18.5.34. 5-B-IV. We wish to revise the specification of this chassis and should like the following items incorporated:- ENGINE. (1) Cylinder Head 6.75 C/R.{Sir Henry Royce} Aluminium, to Hs.{Lord Ernest Hives - Chair}1372. (2) Halford type silent tappets. (3) Crankshaft to EX.14081. (4) Connecting Rods to EX.14210/1. (5) Aerolite pistons in RR.53 with latest grinding. (6) Timing gears 10 D.P. to Hs.{Lord Ernest Hives - Chair}1219 and 1221, but with ground steel gears and lapped Textolite cam and water pump pinions. (7) Scheme to prevent valves dropping into cylinder, LEC.3838. (8) Flywheel and clutch, N.Sch.3948, & 3954. Fabric on staggered central member as on 21-G-IV. (9) Engine mounting, Terraplane front and rear. If no LEC. designs available, fit as on B-23-AE. (10) Double contact breaker, LEC.3323. (11) Sump drain plug, LEC.3735. (12) Helical gear oil pump, LEC.3746. (13) Mods. to enable fan belt to be removed, LEC.3784. (14) SpectreCodename for Phantom III coil, D.74200/1. (15) Small dynamo supplied by Wst. (16) Starter motor switch, D.100208, D.74174/5. (17) Ferranti Ammeter. (18) Geared starter motor. | ||