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).
Comparative analysis of radiator core performance, robustness, and manufacturing costs.
| Identifier | ExFiles\Box 149a\2\ scan0353 | |
| Date | 1st April 1935 guessed | |
| - 5 - the Morris steel finned brass tube core in heat dissipation per cubic inch, but the Mark III dissipation per pound of metal is slightly higher. Curve 4 indicates that the Excelsior Experimental cores are superior to their Standard, the heat dissipation per cubic inch and per pound of metal corresponding approximately to the Marston Mark II. No tests have been carried out to determine the robustness of the Experimental Excelsior cores. D.{John DeLooze - Company Secretary} COMPARATIVE COSTS. Diagram No.5 shows the relative merit of radiator cores on the basis of heat dissipated divided by cost. On the left of the diagram heat dissipated per unit of prime manufacturing cost is shown. Material costs are based on Copper Strip at 9.04d per pound, Brass Strip at 9d per pound and solder at 11d per pound. Details of Marston and Excelsior cores only are included as no knowledge is available of the Morris prime costs. On the right of the diagram heat dissipated per unit of sales price is shown. This diagram cannot be taken as giving precise information as sales prices vary with quantities ordered and other commercial circumstances. | ||