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).
Comparative table of radiator matrix tests showing critical temperatures and physical details.
| Identifier | WestWitteringFiles\W\May1931-August1931\ Scan018 | |
| Date | 21th April 1931 | |
| TOP HEADER: CRITICAL ATS. TEMP. OR TEMPERATURE AT WHICH THE CAR WILL BOIL IF DRIVEN FOR SUFFICIENTLY LONG AT FULL THROTTLE UNDER THE CONDITIONS STATED. TESTS ON 19 E.X. CAR. CONDITIONS AS IN HS{Lord Ernest Hives - Chair}/RM{William Robotham - Chief Engineer}1/KT 21-4-31 DETAILS OF RADIATORS RAD. DIMENSIONS 25.9" x 23.7" x 4.0" E.77675 TABLE COLUMNS: COLUMN 1: TYPE OF RADIATOR MATRIX COLUMN 2: 60 M.P.H. NO BONNET VENTILATION TEMP. CENT. DEGREES COLUMN 3: ALL OUT NO BONNET VENTILATION. COLUMN 4: ALL OUT VERTICAL LOUVRED BONNET COLUMN 5: RADIATOR LBS. WT. EMPTY COLUMN 6: RADIATOR LBS. WT. FULL COLUMN 7: No. APPROX. OF TUBES TABLE DATA: ROW 1: SMALL HEXAGON U.S.A. HEX. .312 ACROSS FLATS CENTRE .265 DIA. ROUND No. OF DENTS 18 | 45.5 | 38 | 45.5 | 107.75 | 145 | 7390 ROW 2: PARALLEL SQUARE TUBE 6 M.M. E.81385 | 42 | 33.0 | 39.75 | 140 | 162 | 8860 ROW 3: LARGE HEXAGON U.S.A. HEX. .360 ACROSS FLATS CENTRE .309 DIA. ROUND No. OF DENTS 20 | 41.5 | 32.5 | 42 | 95 LBS | 130 | 5540 ROW 4: 1931 STANDARD TUBE 6/7 1/2 M.M. ROUND E.79448 4 DENTS/TUBE. | 39.5 | 30.5 | 39.0 | 120 | 168 | 8160 ROW 5: SQUARE TUBE E.81389 6/7 1/2 M.M. VERTICAL WATERWAYS ONLY. | 38 | 29.5 | 39.0 | 129.5 | 159 | 8,860 ROW 6: 6/7 EXPANDED END [] TUBE. E.{Mr Elliott - Chief Engineer} 80239 | 38.5 | 30 | 38 | 132 | 160 | 7050 ROW 7: 1930 STANDARD TUBE 6/7 1/2 M.M. ROUND E.{Mr Elliott - Chief Engineer} 79448. | 34.25 | 21.75 | 32.25 | 120 | 168 | 8160 SIDE NOTES: Wt. OF SHUTTERS COMPLETE WITH FITTINGS ON RAD. 14 LBS. 4OZ. ALL RADIATORS WEIGHED COMPLETE WITH SHUTTERS NO THERMOSTATS. WT. OF RADIATOR FULL IS WT. WITH WATER @ 15° C. HALF WAY UP OVER-FLOW PIPE EXPANSION SPACE ON THESE RADIATORS 2.8 PINTS. STAMP: ISSUED 21 MAY 31 LIBRARY | ||