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).
Radiator blanking plates for pre-war cars, including radiator sizes and types for different series.
| Identifier | ExFiles\Box 78\1\ scan0285 | |
| Date | 20th November 1919 | |
| R.R. 235 A (100 T) (S.F. 575. 16-4-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2354. X 3653 To Bn.{W.O. Bentley / Mr Barrington} To DY.{F R Danby} To Wd.{Mr Wood/Mr Whitehead} To Da.{Bernard Day - Chassis Design} To Mor. To Hs.{Lord Ernest Hives - Chair} Hm{Capt. W. Hallam - Head Repairs}/NRC{N. R. Chandler}5/W20.11.19. Radiator Blanking Plates for pre-war Cars. -------------------- We have not yet received instructions as to what series of cars these plates should be fitted to, or what size of plates should be supplied to customers who may ask for them. The following size of radiators were fitted to pre-war 40/50 HP. cars :- Series. Height of Matrix. Remarks. 500. 18". Originally vertical straight 700. tubes, but many are now replaced by the corrugated tube centre, and these again are gradually being replaced by the latest type of round tube centre. 900. 20". Originally corrugated tubes, but now being replaced by the latest round tube. 1100. 19". As above. 1200 to Chiefly 20" As above. end of "G". Some 22" "H" onwards. "Universal". As on present production. Many of the cars fitted with 18",19" and 20" Radiators, especially those with the old type matrix, have none too much cooling surface for some of the longer hills met with, for example in North Derbyshire, and although admittedly overcooled for short journeys, we fear that with any appreciable reduction in cooling surface the water would be likely to boil on many hills met with in ordinary touring. We think that a radiator sufficiently blanked to keep the water hot for town work, and short journeys, would necessarily be inadequate for a climb of several miles, and we | ||