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).
Water loss from a Wraith radiator, discussing potential solutions like modifying the overflow pipe or adding a steam valve.
| Identifier | ExFiles\Box 108\1\ scan0144 | |
| Date | 1st September 1937 | |
| [Handwritten] 600a [Handwritten] STEADMAN [Typed] c. Rm.{William Robotham - Chief Engineer} [Typed] 26-G.LV. WRAITH - RADIATOR. [Handwritten] Your Comments Pm [Handwritten top right] hW MW/STD The loss of water appears to be due to the restricted height of the overflow pipe, due to the necessity of withdrawing the matrix from the yoke, combined with the absence if a steam valve. With some additional complications, we can raise the level of the overflow pipe some 3" by projecting it into the radiator cap. It is not certain that this would cure the trouble under violent braking, and as a simple form of steam valve is being considered for Bentley lll, it might be better to apply this to Wraith. 25/30's have, of course, had a steam valve for some time. A method of mitigating the trouble would be to reduce the diameter of the overflow pipe, which is rather large at present. DA.{Bernard Day - Chassis Design} | ||