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).
Dynamo performance, battery life, and modifications to prevent overcharging.
| Identifier | ExFiles\Box 62\3\ scan0240 | |
| Date | 7th July 1938 | |
| X6008. To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. Sg.{Arthur F. Sidgreaves - MD} HOF. c. FH. E.{Mr Elliott - Chief Engineer} c. Da.{Bernard Day - Chassis Design} EV.{Ivan Evernden - coachwork} Rel/AD7.7.38. X6008 X6126 X6099 DYNAMO PERFORMANCE. We believe at the moment that we may be over-doing the question of maintaining full charge at high speeds which may affect battery life and which will mean the battery will need more attention as regards filling up with electrolyte. We have supplied well over 100 customers who complained of the original dynamo output with a machine which gave an output slightly less than No.1 curve on the attached print. We have never had a single complaint from customers with these modified machines. The latest modification with a finer field winding gives us an alternative in the case of a very exceptional customer, but our own opinion is that it is not required as standard. Hs.{Lord Ernest Hives - Chair} | ||