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).
Design modifications to the Phantom III crankshaft to reduce weight.
| Identifier | ExFiles\Box 93\5\ scan0130 | |
| Date | 4th November 1936 | |
| GRY{Shadwell Grylls} Please instruct in X 317 DI. c. Rm.{William Robotham - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} Hycro. Rm{William Robotham - Chief Engineer} E/JNR.{Charles L. Jenner}1/HP.4.11.36. re Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}6/KW.20.10.36. Phantom III Crankshaft. We send you herewith:- LeC.5361 showing the above suitable for the small diameter crankpins and the strap type conn. rods with Hall's metal bearings. The crank webs have been cut down in dimension, as suggested by you, and we now think they are at a minimum. The saving in weight due to all these moves will result in the engine being 20 lbs lighter than the standard one. Will you please put detail drawings in hand immediately. E/JNR.{Charles L. Jenner} LeC.5361 herewith. | ||