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 production and testing of higher output dynamos for 40/50 HP and 20 HP models.
| Identifier | ExFiles\Box 68\4\ scan0151 | |
| Date | 4th July 1929 | |
| X8664 By/RD. from EFC. EFC2/AD4.7.29. X.5663 X.8664 HIGHER OUTPUT DYNAMOS. X5663. In the 40/50 HP. case it is understood that a dozen higher output machines have been instructed and made, ourselves having had three of these through us for production test. In the 20 HP. case, so far as we know there has only been one machine made which is still with us on an experimental test engine. Will you please let me know if a dozen 20 HP. machines have been similarly instructed, because in that case it would have been our intention to check over our production test having three of these also through our hands. At present the production test stands open to modification. EFC. | ||