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 a 48 coil armature dynamo by increasing the concentric air gap for testing purposes.
| Identifier | ExFiles\Box 60\1\ Scan231 | |
| Date | 26th May 1930 | |
| X6028 To RHC.{R. H. Coverley - Production Engineer} from EFC. EFC2/AD26.5.30. X.6028. 48 COIL ARMATURE DYNAMO WITH INCREASED CONCENTRIC AIR GAP. In connection with the improvement of the output characteristics of the above type of machine, we wish to try the effect of an increased concentric air gap. For this purpose we are sending to you 48 coil dynamo SSX, and we should be pleased if you will have the pole pieces on this machine bored out, concentric with the armature, sufficiently to increase the radial air gap to .030". The present radial air gap should be .022" so that the increase in the gap should be .008" on the radius. Received.. EFC/CAP. | ||