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).
Road tests on a 49-GB standard engine measuring radiator water loss during a hill climb.
| Identifier | ExFiles\Box 38\2\ Scan255 | |
| Date | 29th October 1924 guessed | |
| contd :- -3- ROAD TESTS. Taken on 49-GB - standard engine - 4 to 1 compression ratio - standard fan and radiator. Tests taken on hill - leading from Glossop to Chapel-en-le-Frith. Car speed and load conditions kept the same for each test. Atmospheric temperature remained constant to within 2°. [TABLE] Release valve set at - Conditions | Standard mins.secs. | 2 lbs. mins.secs. | 3 lbs. mins.secs. | 4 lbs. mins.secs. | 5 lbs. mins.secs. --- Time before water commences to boil. | 3 8 | 4 12 | 5 52 | 6 13 | ---- | 3 2 | 4 30 | 5 58 | 6 55 | ---- --- Amount of water lost on hill. Total time 7 mins. 15 secs. | 3.5 pts. | 2.9 pts. | 1.9 pts. | .125 pts. | ---- | 3.9 " | 3.1 " | 2.3 " | .3 " | ---- [END TABLE] Hs{Lord Ernest Hives - Chair}/ACL. | ||