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).
Requesting a further test on a finer gauge coil for an electro-magnetic main starter switch.
| Identifier | ExFiles\Box 168a\2\ img121 | |
| Date | 15th November 1933 | |
| By/RD. From Ha/Wst. c. to E.{Mr Elliott - Chief Engineer} Ha/Wst.G/MA.15.11.33. ELECTRO MAGNETIC MAIN STARTER SWITCH FOR ALL CHASSIS. We have tested the finer gauge coil on the above switch, to D73829/30 and find that it is still possible to go one gauge finer still with advantage. Will you please arrange to instruct for test a further coil with the available space filled up with 22 SWG. D.S.C. wire and a new resistance unit proportionately increased. Ha/Wst. | ||