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 comparing engine water temperatures of three car models during a hill climb test at Cat and Fiddle.
| Identifier | ExFiles\Box 15\1\ Scan111 | |
| Date | 27th May 1929 | |
| TEST CAT AND FIDDLE NO BONNET VENTILATION AIR TEMP 15°C HILL EACH CAR CARRIES 3 PASS AND 5 CWT BALLAST ① S.S. CAR 22 EX WT. EMPTY 48.3 CWT ② PHANTOM CAR 14 EX. WT. EMPTY 49.75 CWTS ③ OLD PHANTOM CAR 18 Y.C. WT. EMPTY 52.25 CWTS TOP WATER TEMP °C CLIMB MILES Diagram 1: F & B PHANTOM FRONT AREA 500 □" VOLUME 2500 CU. INS. Dimensions: 4.25", 24.25, 24.25 Diagram 2: 14 EX PHANTOM FRONT AREA 568 □" VOLUME 2720 CU. INS. Dimensions: 4.8", 23.2, 24.5" Diagram 3: S.S. SMALL TUBE FRONT AREA 625 □" VOLUME 2500 CU. INS. Dimensions: 4.00, 26.25, 23 3/4 | ||