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).
Graph plotting cylinder head temperatures, BHP, and water temperatures against varying boost pressure at a constant speed.
| Identifier | ExFiles\Box 178\4\ img066 | |
| Date | 27th April 1932 | |
| Top Right Corner: 27-4-32 No.1 Top Left Box: KES.25 FULL/S.C. CYLINDER HEAD TEMPS. THERMO COUPLES IN CYL. HEAD JOINT. No.3 CYL. (COPPER RING) STANDARD EVAP COOLING SYSTEM USED. WATER COOLED. D.T.D. 134 FUEL. A.2. PLUGS. FOUR THERMO COUPLES WERE ORIGINALLY INSERTED BUT TWO FAILED DURING SUBSEQUENT RUNNING. SEE 12-4-32 No.3 COUPLE IS INSERTED BETWEEN Nos. 2-3 BORES. No.4 COUPLE IS DIRECTLY UNDER INLET PLUG No.3 CYL. AUDIBLE DETONATION ABOVE 2 1/2 LBS. BOOST & EXCESSIVE. CONST. SPEED 1900 R.P.M. VARYING BOOST. Graph Labels: Left Y-Axis: TEMP. DEGREES. CENT Right Y-Axis (Top): B.H.P. Right Y-Axis (Bottom): PTS/HP/HR Bottom X-Axis: BOOST PRESSURE LBS ▢" (ABOVE ATMOS. PRESSURE) Curves: B.H.P., WATER OUTLET, WATER INLET Legend: ③ ④ THERMO COUPLES Note: G/F .38 28/2/32 | ||