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).
Comparison of Marston, Excelsior, and Morris radiator cores based on heat dissipation and cost.
| Identifier | ExFiles\Box 149a\2\ scan0354 | |
| Date | 15th February 1936 guessed | |
| - 26 - Diagram No.5 indicates that the Marston Mark II is superior to other Marston and Excelsior cores in heat dissipated per unit cost. It is possible that the Marston Mark VI may be produced at a cost equal to that of the Mark II per unit of heat dissipated, but accurate manufacturing costs have not yet been established. The sales price per unit of heat dissipated indicates that the Morris 2 row with brass tubes and steel fins has an advantage in that its price per unit of heat dissipated is almost equal to the Mark II but it has a greater heat dissipation per unit volume. H.{Arthur M. Hanbury - Head Complaints} SOUTHALL. J.{Mr Johnson W.M.} L. COLTMAN. HS{Lord Ernest Hives - Chair}/AMG. | ||