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).
Instructions for adjusting primary point gap and measuring armature core flux.
| Identifier | ExFiles\Box 4\5\ 05-page141 | |
| Date | 1st February 1921 guessed | |
| -5- Contd. (21) Now ascertain if gap has been altered appreciably. (22) Now vary primary point gap ± .004" above and below original setting and again observe timing. (23) The armature core flux at different speeds shall now be obtained, making use of a thermionic rectifying valve, high resistance and low reading moving coil ammeter, in a manner elsewhere explained. (17) and (23) omitted at first. RFC. | ||