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).
Recommending the procurement of calorstats with 'B' filling, including initial test data on loads at various temperatures.
| Identifier | ExFiles\Box 39\4\ Scan186 | |
| Date | 22th October 1930 | |
| O.O. From Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} c. to Ey. X3499 Hs{Lord Ernest Hives - Chair}/An.1/MJ.22.10.30. CALORSTATS. We understand that it is essential that we should obtain delivery of calorstats to avoid production being held up. We therefore recommend that the first production quantity of calorstats should be obtained with the filling specified as 'B' by the makers in their letter of the 14th. inst. The characteristic of the thermostat is as follows :- LOADS MEASURED .250 FROM BOTTOM OF STROKE Temperature Degrees Cent: 20 Minus 40 30 " 36 40 " 30 50 " 24 60 " 16 70 " 5 80 Plus 8 90 " 25 100 " 47 We have so far had this calorstat on test only one day. We have not made any comprehensive tests on it. We therefore recommend that the minimum quantity of Calorstats are ordered as it may even now be necessary to change the filling. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||