Battery tests, detailing a fault, its cause, and a suggested modification.
| Identifier | ExFiles\Box 168b\3\ img284 | |
| Date | 21th June 1930 | |
| E76. JD {J. Draper - Frames} 85 X 7535P. Tests on P&R PRRNII-102 Battery (213/4) This battery has now run 12,117 miles, & on bench tests no 3 cell of no 2 unit has been found faulty, having a very poor capacity. An electrical leak was found between nos 1 & 2 cells in the same unit. This was due to the compound breaking away from wall & allowing acid to get over. This is the first occurrence of this & if we are going to be troubled with it I suggest the two dividing walls should be made a little taller to protrude through the bitumen & form a bridge. Of course it must be realised this battery has no doubt received an abnormal amount of vibration due to the box supporting cross member being broken as reported in JD {J. Draper - Frames} 84 6-6-30. (cond'd) | ||
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).