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).
Engine cooling systems, including series water flow, cylinder temperatures, and high-speed fan design.
| Identifier | ExFiles\Box 173\1\ img222 | |
| Date | 6th February 1934 | |
| -5- of the same total displacement. This can be checked by taking a heat balance of the Bentley engine because as far as I can remember, and from theoretical reasoning, it is not to be expected. Harrisons deprecate carrying too much exhaust valve port in the cylinder head as this increases heat to water. Voight Ford exceptionally bad. They are in favour of series water flow, i.e., because it increases velocity and reduces the possibility of any one cylinder being short circuited due to corrosion deposit. Advantage, front cylinder in still air should run 50F. hotter than the rear cylinder, because under road conditions air on the block cools it 50F. more than the rear cylinder. FANS. General speed of fans on high speed engines are about 3/4 engine speed. Never 1 - 1 to avoid resonance. No patent on staggered blades. Cadillacs have developed a fan with blades which flatten out at high speeds with rubber attachments to the hub - shall learn about this at Detroit. | ||