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).
Test report on heat generation with performance data at half and full throttle.
| Identifier | ExFiles\Box 77\4\ scan0288 | |
| Date | 7th November 1922 | |
| X4240 TEST OF HEAT GENERATED. 7.11.22. Half throttle. R.P.M. | lift. | HP. | Starting temp. | Final temp. | Time of flow 3 gals. | Cons. pts. per hr. (Mex) 500 | 23¾ | 4.9 | 30 | 57 | 92 | 4½ 750 | 25 | 7.8 | 33 | 47 | 50 | 6 1000 | 25¼ | 10.5 | 34½ | 47½ | 36¾ | 7 1250 | 24½ | 12.2 | 39 | 49½ | 34 | 9 1500 | 23¾ | 14.6 | 40 | 50 | 33½ | 10 1750 | 21¾ | 15.8 | 39 | 49 | 26 | 11½ 2000 | 21 | 17.5 | 40 | 50 | 20 | 12½ 2250 | 20¼ | 18.7 | 42 | 52 | 15 | 15 2500 | 18¾ | 19.2 | 46 | 56½ | 20 | 17½ 2750 | 16 | 18.3*| 65 | 75º | 25 | 19 3000 | 14 | 17.5 | | | | 23 Full throttle. R.P.M. | Lift. | Rise in temp. | Time of flow 3 gals. | Cons. pts. per hr 500 | 47 | 28.0 | 93 secs. | 8 750 | 50 | 19.5 | 52 | 11 1000 | 50½ | 16.75 | 37 | 13½ 1250 | 49 | 37 | 35 | 16 1500 | 46½ | 19 | 33 | 19 1750 | 43½ | 19¼ | 30 | 21½ 2000 | 42 | 19½ | 27 | 23 2250 | 40 | 20 | 25 | 25 2500 | 37 | 20 | 23 2/5 | 28 2750 | 32 | 20½ | 23 | 30 3000 | 28 | 22½ | 24 | 32 3 X 60 93 | ||