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).
Experimental Morganite CM5H brushes for the SS starter motor.
| Identifier | ExFiles\Box 61b\3\ scan0100 | |
| Date | 14th May 1929 | |
| X6050 To RHC.{R. H. Coverley - Production Engineer} from EFC. c. BY/RD. c. Mr. Brock. EFC4/T14.5.29. MORGANITE CM5H BRUSHES WITH SMALLER COEFFICIENT OF FRICTION FOR SS.{S. Smith} STARTER MOTOR Herewith we hand to you a set of brushes which are of an experimental grade for less commutator friction to the sliding motion of the armature. Will you please arrange to have these fitted to the next S.S. motor to be produced. This is to be considered an experimental departure from the S.S. standard. It is an experiment asked for by R.{Sir Henry Royce} EFC. | ||