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).
Instruction sheet detailing the cause of a P&R battery cell failure after extensive road and bench testing.
Identifier | ExFiles\Box 54\1\ Scan327 | |
Date | 15th April 1929 | |
ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.T.C. Order No. IC.156. Customer's No. X4617S. Re Failure of P&R cell from S1 Battery This cell has covered 9012 miles on the road & has been on our bench life test 3 years. Failure was due to the stretching of the positive plates which overlapped the negative plates & separators allowing paste to accumulate between & cause a short. The wood & ebonite separators were good but the ebonite separators were short by 1/2 inch which would be serious if the plates buckled & punched through the wood, which in case there would be a premature failure. Luckily this is a fault now which we never have & seems to have been entirely eliminated. The negative plates were very good. Signed This Sheet must be filed on completion of the work. | ||