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).
Note on the differing dimensions of Morganite brushes ordered for the Goshawk motor.
| Identifier | ExFiles\Box 35\4\ scan 076 | |
| Date | 26th January 1922 | |
| X.4384. Jan 26th 1922. EFC. PB.34. X.3348 MORGANITE BRUSHES FOR GOSHAWK MOTOR X.4384. Morganite C.M.3 brushes ordered under D.1564 and originally meant for Gos.1 are .75" x .3" while those ordered under D.50228 are .75" x .312" Moreover the pigtails on the first lot are an inch longer. It is thought that they would be too loose in the holders and therefore if not used experimentally would be scrapped. CAP. | ||