Power curve graph for Engine No. SS.15, comparing an exhaust-heated hot-spot system to a standard water-heated one.
| Identifier | ExFiles\Box 13\3\ 03-page121 | |
| Date | 22th October 1929 | |
| POWER CURVE (EXHAUST HEATED HOT-SPOT) ENGINE No. SS. {S. Smith} 15 STANDARD INDUCTION SYSTEM EXCEPT FOR HOT-SPOT CAR TYPE SILENCER HOT-SPOT EXHAUSTS INTO ATMOSPHERE BRAKE HORSE POWER R.P.M. OF ENGINE HOT-SPOT TEMPERATURE (CENTIGRADE) STD. WATER HEATED HOT-SPOT HOT SPOT TEMP. * THESE TEMPERATURES REACH A HIGHER VALUE THAN OBTAINABLE ON THE ROAD, DUE TO LACK OF COOLING BY FAN AND ALSO DUE TO A GREATER CIRCULATION THRU' HOT-SPOT OCCASIONED BY EXHAUSTING DIRECTLY INTO ATMOSPHERE INSTEAD OF A TAIL PIPE. | ||
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).