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).
Response to U.S.A. complaints regarding batteries running down and the suitability of different dynamo types.
| Identifier | ExFiles\Box 31\1\ Scan126 | |
| Date | 8th June 1921 | |
| X1402 Extract from R10/G8.6.21. X.3614 - RE U.S.A. COMPLAINTS. X.4165. X.664 X.294. X.4211 X.1402. RUNNING DOWN OF THE BATTERY. We have no objection to you using a Westinghouse or Bijur dynamo with vibrator arrangement, which undoubtedly will keep the battery up better. It should be understood that in many cases batteries have become short-circuited or partly short-circuited through the deposit on the supporting bars and the warping of the plates and the ineffectiveness of the separators. The Lucas dynamo has also failed to supply a satisfactory charging current owing to the fuses blowing and putting out one of the exciting circuits. We propose to send no dynamos on the chassis which we are sending out in the future, so that you can find your own. The difficulty, so far as our agreeing to your dynamo equipment is concerned, is that American Company have never sent us a specimen of what they would wish to fit which has proved satisfactory. I believe, however, that either the Westinghouse or Bijur dynamo with vibrator regulator will be found to give fair satisfaction. We think the simpler control of the dynamo is that of the third brush, because the vibrator regulator is of necessity rather a delicate piece of apparatus. It is also a highly refined problem to give a large current to a battery Contd. | ||