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).
The performance of modified distribution box thumbscrews with milled beads.
| Identifier | ExFiles\Box 65\2\ scan0097 | |
| Date | 17th July 1926 | |
| X7740 EFC. {E. Fowler Clarke - Electrical Engineer} AC.77. 17th July, 1926. MODIFIED DISTRIBUTION BOX THUMBSCREWS. A set of these screws(having milled beads) was fitted to 12-EX on 22.5.26. The car has run 2609 miles since then up to July 1st. A similar set has been on 9-GIII since 30.4.26 the car having run 1524 miles up to 1.6.26 with this fitment. The screws are reported to be convenient to use and to have no disadvantages over the wing-nut fittings. The diameter is about the most suitable possible. EFC {E. Fowler Clarke - Electrical Engineer} /RJA. | ||