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).
Preliminary test for an electrical speedometer using a small alternator and a bridge rectifier instrument.
| Identifier | ExFiles\Box 165\4\ img058 | |
| Date | 29th April 1930 | |
| X 6023 TO E.{Mr Elliott - Chief Engineer} from EFC. EFC5/AD29.4.30. ELECTRICAL SPEEDOMETER. Referring to my EFC5/AD25.4.30 I have received from PN.{Mr Northey} a note of which the attached is a copy. I am replying to this note of PN{Mr Northey}'s to the effect that we consider it would be useful to us to have one of the small alternators of which he speaks for a preliminary test. There is a chance that a bridge type rectifier instrument already in our possession in connection with ignition coil tests will, with the alternator which PN.{Mr Northey} offers to send, make a suitable combination. Attached. Copy of PN{Mr Northey}15/WT28.4.30. EFC. | ||