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 various radiator core performances and deductions based on test curves.
| Identifier | ExFiles\Box 149a\2\ scan0352 | |
| Date | 1st April 1935 guessed | |
| - 4 - 50 m.p.h. and curves giving the resultant horsepower dissipated are attached. Curve 1 compares the performance of four Marston radiator cores, one Excelsior core and one finned or gilled tube core. Curve 2 compares the cooling per pound of metal employed in the core. Curve 3 compares the performance of three Morris fin and tube cores with the equivalent Marston cores. Curve 4 compares Marston Mark II with Excelsior Standard and Experimental cores. Deductions. From Curves 1 and 2 it is clear that the Marston Mark VI core has superior merit, as it is equal to the Mark II in heat dissipated per pound of metal, and is greatly superior to it in the heat dissipated per cubic inch of core. It is also noted that the Mark VI gives a higher heat dissipation per cubic inch than any other core tested. From Curve 3 it will be observed that the Marston Mark V corresponds with the Morris copper fin and tube in cooling capacity per cubic inch of core, but from Curve 2 it will be observed that the dissipation per pound of metal is superior in the case of the Marston Mark V.{VIENNA} The Marston Mark III corresponds to | ||