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).
Thermostat tests on a 'Sylphon' unit, comparing performance with alcohol and ether.
| Identifier | ExFiles\Box 39\4\ Scan113 | |
| Date | 7th April 1930 | |
| To EY. From Hs{Lord Ernest Hives - Chair}/Bn.{W.O. Bentley / Mr Barrington} c. to E.{Mr Elliott - Chief Engineer} Rg.{Mr Rowledge} Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}5/MJ.7.4.30. THERMOSTAT TESTS. "SYLPHON". Total Movement 1.080". | | ALCOHOL. | | | ETHER. | | | | LOAD SUPPORTED - LB - | | | | | | TEMP: C. | Zero position | Max.Pos. 1.080 above zero. | .325 Above Zero. | .162 Above Zero. | Zero Position. | |---|---|---|---|---|---| | 75 | 16 | - | 6 | 7 | 12 | | 80 | 26 | - | 14 | 24 | 16 | | 85 | 36 | 8 | 22 | 24 | 24 | | 90 | 46 | 22 | 32 | - | 30 | | 95 | 46 | 26 | 42 | 44 | 34 | | 100 | 51 | 32 | 50 | - | 40 | .325 Above Zero represents max. movement on car. .162 Above Zero represents mid. position on car. When taking readings at max. position (1.080 Above Zero) we found that this point is reached at 80° - 85° C. Originally the sylphon contained alcohol. This was replaced by Ether and a test at Zero position taken. The loads were lower than before. | ||