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).
Request to modify the air gap on a 25 HP dynamo for further testing.
| Identifier | ExFiles\Box 62\3\ scan0219 | |
| Date | 4th April 1931 | |
| X 6106 RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/FJA. Hs{Lord Ernest Hives - Chair}/RJAl/ADl4.4.31 We are handing you 25 HP. dynamo 8.24s.IO. which has heavier gauge armature wire than standard and an air gap of .012" instead of .015". Will you please have the air gap made to .020" and the machine returned to us for further test. Completed. Hs{Lord Ernest Hives - Chair}/FJA. | ||