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).
Suitable materials for an accumulator box to be carried in the rear of a chassis.
| Identifier | ExFiles\Box 76\3\ scan0109 | |
| Date | 29th November 1919 | |
| R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. E.{Mr Elliott - Chief Engineer} Ref-E1/G291119. CK{Mr Clark} O CJ. C BN.{W.O. Bentley / Mr Barrington} C DA.{Bernard Day - Chassis Design} C EH. HL10/EB11219. Laboratory. RE ACCUMULATOR BOX CARRIED IN REAR OF CHASSIS. The wood box should be preferably impregnated with parafin wax by ironing it into the previously dried box. With respect to (1) of your note. I consider that pure aluminium or aluminium containing some nickel would be good. The material should, however, be as low as possible in iron. High zinc or copper would also be objectionable. With respect to (2). I do not think that stainless steel would be at all suitable since it is very susceptable to the action of accumulator acid, (either in the annealed or special heat treated condition). Lead or lead-antimony covered ordinary steel forgings would be satisfactory as far as I can see, and if these are obtainable, they should, I think, be preferable in the long run to aluminium, though the latter is very little effected by accumulator acid. The reason that lead-antimony was mentioned is that it is considerable stiffer than lead by itself, and is quite as resistant to accumulator acid as the former, so that it would be mechanically stronger for the purpose specified. HCHb | ||