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).
Chart comparing the performance of a Buick oil cooler against a calculated hexagonal honeycomb film type cooler.
| Identifier | ExFiles\Box 149a\2\ scan0316 | |
| Date | 4th December 1933 | |
| CHART O/19/FIG 10. BUICK OIL COOLER OIL TO WATER HEAT TRANSMISSION COMPARISON CHART WITH PERFORMANCE OF OIL COOLERS GIVEN IN PAPER BY W.R. RAMSAUR OF LOCKPORT N.Y. NO. OF TUBES 116 (BUICK) AND 112 HEX HONEYCOMB FILM. FILM DEPTH 3 1/4" (.) AND 2 1/4" (?) - (CALCULATED) WATER FLOW - 15 GALLS/MIN. OIL INLET TEMP 210°F WATER " " 170°F OIL USED - MOBILOIL "A" (BUICK) AND S.A.E. NO. 30. S.A.E. OIL 30 REDWOOD VISCOSITY AT 190°F - 70 MOBILOIL "A" " " 190°F - 70 S.A.E " 72°F - 2500 MOBILOIL A " 72°F - 1700 B.T.U.S DISSIPATED/MIN. OIL FLOW GALLONS/MIN. BUICK COOLER EWS 4/12/33 | ||