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).
Swapping Goshawk dynamos R.3 and No.604 on chassis 7GII for a noise test.
| Identifier | ExFiles\Box 51\1\ Scan294 | |
| Date | 11th November 1923 | |
| X4383 To RHC. {R. H. Coverley - Production Engineer} from EFC. {E. Fowler Clarke - Electrical Engineer} C. Hs {Lord Ernest Hives - Chair} /TMW. EFC {E. Fowler Clarke - Electrical Engineer} 7/T1.11.23. X.4383 - GOSHAWKAero EngineCodename for 20HP Car / Aero Engine after KestrelAero Engine DYNAMOS. We are now handing back to you dynamo R.3, fitted with bevelled brushes of EG2 Morganite material, commutator not specially undercut. Will you kindly replace this dynamo on 7GII, and let us have back No.604 which we have had on this car for the purpose of a noise test. Unfortunately, owing to the noisiness of the gears on this chassis, any dynamo noise which may have existed was not detectable. Dynamo No.604 should be returned to us to await a further experiment. E.F.C. EFC. {E. Fowler Clarke - Electrical Engineer} [Handwritten note] R3 fitted to 7GII & 604 returned to us for further Inspn OK RHC {R. H. Coverley - Production Engineer} 14/11 | ||