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).
Tests to determine the effects of outlet pipe restriction on radiator cooling efficiency.
| Identifier | ExFiles\Box 15\1\ Scan176 | |
| Date | 7th December 1929 guessed | |
| x7250. LOSS OF WATER FROM RADIATORS. x7250 x766 x4576 Tests were carried out to determine what restriction could be put in the outlet pipe from the cylinder block without impairing the cooling efficiency of the system. Tests were carried out both at high speeds on the level and hill climbing. The results shewed that the water pipe could be reduced to an area of 23 .125 holes without any loss of efficiency. 20 holes of the same size were on the border line of trouble. With 15 1/8 holes the cooling efficiency was definately impaired. A practical means of fitting this to the car was to make the outlet holes in E73444 of the following dimensions:- .250 .650 The road tests were carried out on 13-EX chassis and are recorded in the log book. Hs{Lord Ernest Hives - Chair}/an. | ||