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).
Experimental change to the thermostat location to reduce hunting.
| Identifier | WestWitteringFiles\F\April1921\ Scan34 | |
| Date | 4th April 1921 | |
| To HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} [struck through] Copy to C.J. [struck through] " EFC. ORIGINAL. R4/G14/4/21. x3456 x3902 RE THERMOSTATIC CONTROL. X3563 On some previous occasions you reported that this apparatus hunts. It has occurred to me that if the thermostat were in the water leaving the radiator, i.e. going to the cylinders (naturally set for a slightly lower temperature) its tendency to hunt would be reduced, because it would more promptly feel the effect of a change in temperature, whether this is caused by an alteration in the opening of louvres or valve. I shall be glad if you can experimentally find out whether this is really the case. R.{Sir Henry Royce} | ||