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).
New Packard-type crankshaft and an improved Bentley-style exhaust valve for the Phantom III Engine.
| Identifier | ExFiles\Box 91\1\ scan0410 | |
| Date | 25th August 1936 | |
| x 300 GRY{Shadwell Grylls}- Please see all concerned & try & get a promise for delivery of this shaft Pm BTT --- c. RHo. Hs{Lord Ernest Hives - Chair}/Fm. E/JNR.{Charles L. Jenner}1/HP.25.8.36. Phantom III Engine. We send you herewith:- LeC.5230 showing a new crankshaft which has balance weights fitted of the Packard type. Also herewith LeC.5219 showing an improved exhaust valve which follows the same lines as the latest Bentley shape. The cylinder head shown on this drawing was an investigation to improve the water ways, but it has been decided that no action should be taken in this direction at the moment. LeC's5230.5219 herewith. E/JNR.{Charles L. Jenner} | ||