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).
Alterations to a coil case moulding and comparing it to an ordinary 40/50 stahlite coil.
| Identifier | ExFiles\Box 45\4\ Scan136 | |
| Date | 29th January 1923 guessed | |
| EFCL/T23.1.23. -2- Contd. of .312 between the secondary winding and the case, which would seem to be ample. As regards the new coil case moulding it has only meant a new plunger being made for the mould so that the alteration is inexpensive. We think you will not be able to detect the difference between this coil and the ordinary 40/50 stahlite coil, except that perhaps at high speeds the present coil may be a little better owing to the reduced primary inductance. EFC. | ||