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).
Technical note on the design improvements of battery grids, specifically the horizontal bars and pitch.
| Identifier | ExFiles\Box 168b\3\ img238 | |
| Date | 16th October 1929 guessed | |
| II JD{J. Draper - Frames}34. This is reversed on every horizontal bar. The above arrangement gives a good & effective way of keying in the active material. The horizontal bars on the negative grid have a slightly larger pitch than on the positive These grids appear to be in every way satisfactory, & are of good design, & shew a great improvement on those that were fitted to the RR11 12 volt battery. I see no way in which these could be improved at present. F.J. | ||