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 control of water circulation for the 40/50 HP, 'Buzzard', and 'Vulture' models.
| Identifier | ExFiles\Box 78\1\ scan0104 | |
| Date | 18th October 1920 | |
| To CJ. from R.{Sir Henry Royce} Copy to EAC. " " Wor.{Arthur Wormald - General Works Manager} " " PN.{Mr Northey} " " Hs.{Lord Ernest Hives - Chair} " " EP.{G. Eric Platford - Chief Quality Engineer} " " By.{R.W. Bailey - Chief Engineer} " " Da.{Bernard Day - Chassis Design} " " R.R. Of American Inc. (For the attention of OY). X 3563 X.3563. X.4198/9. RE THERMOSTATS. X.3821. X.3861. You will remember that we are at present fitting to our standard 40/50 H.P. thermostat control of water circulation, leaving the radiator to be taken care of by the chauffeur. This equipment is very desirable for economy of petrol. and for reducing the risk of condensed petrol washing off the lubricating oil from the cylinder walls, and in conjunction with the use of castor oil as engine cylinder lubricant should materially lessen the wear of pistons, piston rings and cylinders. We have to-day completed the arrangement drawing for the "Buzzard" and "Vulture" thermostat control of the water circulation by louvres behind the radiator. We see no reason for adopting a relay system for working these louvres, as the large size of thermostat has sufficient power and stroke to easily control suitably shaped shutters. We have adopted an inside position for the louvres so as to give a cleanly appearance, and to rather add to the appearance of the car (by lengthening the bonnet) then detracting from it. It has also the advantage of permitting the radiator to be covered up by a muffle in extremely cold conditions, such as winter conditions Contd. | ||