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 failure of a battery and dynamo following a 10,000-mile test on a 24-EX vehicle.
| Identifier | ExFiles\Box 60\1\ Scan268 | |
| Date | 6th October 1930 | |
| X6006 Wor.{Arthur Wormald - General Works Manager} from EFC. c. Hy.{Tom Haldenby - Plant Engineer} c. Hs.{Lord Ernest Hives - Chair} EFC6/AD6.10.30. X6021 X6006 X7740 ELECTRICAL EQUIPMENT ON 24-EX 10,000 MILE TEST. Referring to Hs{Lord Ernest Hives - Chair}2/MJ6.10.30 our remarks on the three items are as follows :- Battery. The only complaint of this unit actually on the 10,000 mile test was in regard to the relatively large quantity of water required for topping up. When the car returned we did not receive any complaint, but when we had the battery off for investigation we found that three cells were weak, the density of their electrolyte being very low. Without going into details we made various tests on the battery to determine its condition all of which proved these cells in some way or other to have gone wrong. The other three cells also were not in correct condition. In addition to making tests we have opened up the battery and made a complete examination and investigation including having an analysis of three samples of electrolyte from three of the cells opened up. Although we have an accurate record of the condition of the plates we are unable ourselves to arrive at the exact cause of the premature failure of this battery, the condition of the plates being quite outside our range of previous experience and certainly does not appear to be explained by over-charging. We have put the whole story/up to the makers in a letter dated October 3rd. and we are awaiting their reply as to whether they are able to throw any light on the matter. It is possible that increased vibration due to the new type of more rigid suspension may have had something to do with this battery failure. Dynamo. An explanation covering the failure of this unit was given in our EFC5/AD26.8.30, the failure having been | ||