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).
Comparison of Bijur and Rushmore battery and dynamo sets regarding weight, voltage, efficiency, and safety.
| Identifier | ExFiles\Box 61b\3\ scan0018 | |
| Date | 24th February 1914 guessed | |
| -2- EH13/B20314. Contd. and that they can use a lighter battery with low voltage. They say that the heavy discharge from the battery for starting the engine does not do as much damage to it as burning two head-lights, because the starting is simply a kick off the surface of the plates. They do not advise celluloid batteries because of the danger of fire. Mr. Rushmore laid stress on the point that there is a big reduction in the efficiency of a bettery as the temperature drops, he says that at zero it is only 47%. The Bijur set weighs, dynamo 32 lbs., motor 29 1/2 lbs. battery 60 lbs. The Rushmore, 37 lbs., dynamo, motor 29 lbs., battery 60 lbs. We are testing both of these sets and will report later how they work in practice. EH. | ||