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).
Testing dynamo SS.7, noting noise issues and harsh brushes, and requesting further tests on a rig.
| Identifier | ExFiles\Box 60\1\ Scan180 | |
| Date | 3rd February 1930 | |
| X.6004. To EFC. 3.2.30. We have run dynamo SS.{S. Smith}7 on a chassis .70 miles and it seems O.K. for moan and sing. The brushes seem very harsh and scratchy. The output we did not take as we had not got an ammeter on the chassis. Perhaps you can do this on your rig as we are very short of chassis at present. J.{Mr Johnson W.M.} Daykin. | ||