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).
Cylinder and liner temperature tests on the Lighter Phantom engine to investigate piston ring carbonisation.
| Identifier | WestWitteringFiles\P\October1926-November1926\ Scan059 | |
| Date | 18th October 1926 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair}/ACL1. c. to BJ. cor. c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} ORIGINAL Hs{Lord Ernest Hives - Chair}/ACL1/LG18.10.26. LIGHTER PHANTOM ENGINE - CYLINDER AND LINER TEMPERATURE. Handwritten: X8050, X3866, X8840 In view of the piston ring carbonising trouble manifest on the Falcon X, and thought to be associated with hot cylinder liners, we have carried out some tests on the lighter Phantom engine to determine if the steel liners on this engine were appreciably hotter than the aluminium cylinder walls. Up to the present time we have not experienced any trouble with the liners, pistons or rings on this engine. Our method of recording the temperatures was by means of Eureka-iron thermo couples, some in contact with the liner and others with the aluminium cylinder at various parts. These couples were previously calibrated against a high temperature glass thermometer. In order to obtain contact with the liner a hole was drilled through the aluminium cylinder wall and a hollow steel plug screwed in which pressed highly into contact with the liner a small copper disc to which was brazed the two wires of the thermo couple - the Eureka wire being insulated after leaving the disc. The couples recording the aluminium cylinder temperature were brazed together at the end and 'peened' into a small hole drilled in the aluminium. The following sketch shews more clearly how these couples were inserted. contd :- | ||