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).
Information sheet detailing specifications and performance data for radiator tests.
| Identifier | ExFiles\Box 77\4\ scan0321 | |
| Date | 7th March 1923 guessed | |
| 20 H.P. X4240 X4538/X4240 INFORMATION FOR RADIATOR TESTS. Capacity of long tube matrix = 22.75 pts. 28.4 lbs. Capacity of short tube matrix = 20.25 pts. 25.3 lbs. Capacity of cylinder block = 11.5 pts. 14.4 lbs. Wt. of short tube matrix 62.75 lbs. " " long " " 70.5 lbs. Wt. of cylinder head casting 2 qrs. 9 lbs. " " " block " 3 qrs. 9 lbs. Water equiv: long tube radiator 6.65 lbs. " " short " 5.9 lbs. " " cyl. block and head less 8 lbs. for machining.(rough castings) 19 1/2 lbs. --------------------------------------- TOTAL WATER EQUIVALENT OF SYSTEM. Long tube matrix 69 lbs. Short " " 65.05 lbs. --------------------------------------- DELIVERY OF WATER PUMP. 10 m.p.h. = 1.9 g.p.m. 20 m.p.h. = 4.9 g.p.m. 30 m.p.h. = 5.45g.p.m. --------------------------------------- MEAN AIR VELOCITY THROUGH RADIATOR SHUTTERS OPEN. FAN OFF & ON 10 m.p.h. = 5.24 6.36 20 m.p.h. = 11.47 13.85 30 m.p.h. = 17.7 22.1 --------------------------------------- | ||