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).
Testing specifications and temperature settings for car shutter thermostats.
| Identifier | WestWitteringFiles\U\2January1930-September1930\ Scan100 | |
| Date | 1st May 1930 | |
| [Strikethrough: E.{Mr Elliott - Chief Engineer}] HS.{Lord Ernest Hives - Chair} ) FROM R.{Sir Henry Royce} [Strikethrough: OY.] ) (At Le CanadelHenry Royce's French residence.) R1/M1.5.30. [Strikethrough: C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager}] [Strikethrough: C. to RG.{Mr Rowledge} BY.{R.W. Bailey - Chief Engineer} DA.{Bernard Day - Chassis Design}] CAR WORK. [Underline: THERMOSTATS FOR SHUTTERS.] [Underline: (IN CONTINUATION OF R2/M30.4.30.)] Handwritten: 47250 x 3499 The unit bellows should each be tested by making them lift 20 lbs. to open, when they should commence to operate at 50/55°C., and be fully open at 65/70°C., by stretching themselves against [underline: atmosphere], stiffness of the bellows, and the same 20 lbs. (E's estimate of the shutter friction at bellows stroke.) Then they should have the load reversed - 20 lbs. - (i.e. trying to stretch them and cooled down, when they ought to close at 40/45°C. The whole cycle would take about 30°C. - less preferred - and average 55/60°C. = 131/140°F.{Mr Friese} I am convinced that unless we keep the [underline: temperature low] we shall have more complaints of water boiling than with hand controls. Even then we shall be at a disadvantage during hot weather, when the shutters should be always fully open. The present temperature of 75/80°C. is too high, and I think unnecessary with Phantom 2, as stated above. Louvres for [underline: warm climates] are necessary. Can we try some horizontal ones, which are better for appearance and sound, and one cannot see through. R.{Sir Henry Royce} | ||