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).
Heating tests on asbestos moulded bakelite for the Goshawk II Commutator.
| Identifier | ExFiles\Box 24\2\ Scan195 | |
| Date | 23th May 1922 | |
| X1109 Extract from E3/M23.5.22. RE GOSHAWK II COMMUTATOR. X.1109. X.3513. Referring now to Mr. Clark's report (X.1109) tests of insulating material, it would be very useful if the 2 forms of asbestos moulded bakelite which you showed to me in the sample namely, Granular and Fibrous, could be put through similar tests to those given in the report in question, particularly the heating tests as Mr. Royce wishes to know whether it is the gum or the filler that represents the limit of heat resistance in bakelite moulded products, and we particularly wish to find a moulded insulator which possesses great resistance to heat. In this connection it would be probably worth while making enquiries of the people who manufacture the moulded materials. We seem to remember reading in one of Mr. Olley's letters of powdered mica being used as a filler for bakelite gum. | ||