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).
Failures of battery box fixings and the batteries themselves due to excessive vibration, requesting a modified cantilever support design.
| Identifier | ExFiles\Box 164\4\ img042 | |
| Date | 21th August 1931 | |
| To R: From Hs. {Lord Ernest Hives - Chair} c.c. to Dr. S. c.c. to By. {R.W. Bailey - Chief Engineer} X6055 Hs. {Lord Ernest Hives - Chair} 5/MJ.21.8.31. A.7236. X.5535 X6055 BATTERY BOX ARRANGEMENT. Replying to R.4/M15.8.31. We have already pointed out that the battery box mounted on 25-EX. is not standard. It is, however, a W.W. design and it should have been removed before the car went away but unfortunately it was overlooked. We have already carried out a number of tests and reported in Hs {Lord Ernest Hives - Chair} /Cry.1/MJ.8.1.31 the effect of the cantilever battery support. This report shews that there is very much more movement on the battery box with the cantilever support than there is with the one which we are using at present on both cars, that is, the tube across the frame. Our tests have shewn us that the deflection takes place in the side member and therefore it makes very little difference what design of cantilever arm we use. Apart from the failure of the battery box fixings we have also had complete failures of the batteries themselves which can only be attributed to excessive vibration caused by the method of support. The present battery boxes are made in lead coated steel and we have no record of any failure caused by corrosion. Confirming the discussion at W.W. we now wait for a design for a modified form of cantilever support. Hs. {Lord Ernest Hives - Chair} | ||