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).
Performance graph for a Bentley Radiator (Marston Mk VI Block), plotting HP dissipated and water pressure against water flow.
| Identifier | ExFiles\Box 149a\2\ scan0358 | |
| Date | 17th February 1936 guessed | |
| L/609/B.2 H.P. DISSIPATED BENTLEY RADIATOR (MARSTON Mk VI BLOCK) FRONTAL ASPECT 3.24 sq. ft. (23 3/4" x 19 5/8") AREA : 3.22 sq. ft. No OF WATER PASSAGES : 37 DEPTH OF BLOCK : 52 M/M AIR INLET = 60°F WATER MEAN = 160°F CONSTANT AIR FLOW 5020 CU. FT./MIN. WATER PRESSURE WATER FLOW GALLONS/MIN. WATER PRESSURE DROP ACROSS RAD. LBS/SQ" (INCLUDING PRESS. DROP THRO' HEADERS AND INLET & OUTLET PIPES) H.P. DISSIPATED / 100°F TEMP. DIFF. AIR IN TO WATER MEAN. | ||