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).
Arrangement and proposed testing of coolant jets for the Wraith III cylinder head.
| Identifier | ExFiles\Box 8\6\ 06-page02 | |
| Date | 5th May 1937 | |
| SECRET. 619. BY.{R.W. Bailey - Chief Engineer} c. Rm.{William Robotham - Chief Engineer} HFG. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} E/JNR.{Charles L. Jenner}1/HP.5.5.37. Cylinder Head Coolant Jets. We send you herewith:- LeC.5664 showing coolant jets arranged for the Wraith III cylinder head. The object of the nozzle is to carry a jet of cooling water as near as possible to the exhaust valve seats. There are three nozzles, they are arranged between cylinders 1 and 2, between 3 and 4, and between 5 and 6. Before these are instructed for fitting to Wraith III we suggest an experiment be made to assess the value of the jets by trying them on a 25/30 or Bentley engine. E/JNR.{Charles L. Jenner} LeC.5664 herewith. | ||