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).
Inspection report on a Goshawk Dynamo E3 from chassis 7GII after 5419 miles.
| Identifier | WestWitteringFiles\L\2Jan1924-March1924\ Scan64 | |
| Date | 7th February 1934 | |
| EPC. AB.102. 7th Feb .1934. X.4383 - GOSHAWK DYNAMO E3 FROM 7GII. This machine, having run 5419 miles on the above chassis has been removed for inspection and replaced by dynamo F.{Mr Friese} The brushes are of EG2 (Morganite) quality and have all become fairly well polished with the exception of a slight dulness at the trailing edge of the positive. The commutator has become burnt at the trailing edges of the segments and there are parts which have not made contact with the brushes. It was not machine undercut. There are traces of mica between some of the segments. The spring pressures at starting were:- Positive 1.0 lb. Negative 1.0 Control .5 and are now:- Positive .8 lb. Negative .85 Control .5 The brush lengths were not measured before starting, but there is little sign of wear having taken place to any great extent. EPC/RJA. | ||