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).
Comparison of different radiator specifications, including chassis details, weight, and water capacity.
| Identifier | ExFiles\Box 105\1\ scan0166 | |
| Date | 20th May 1931 guessed | |
| NEW LARGE HEXAGON TUBE MATRIX. Comparison of radiators. Chassis Weight Water Capacity. E.56327 Standard 3.750 long 97 lbs Round 2 gall.6 1/2 pts. E.56692 19-CIV 3.250 " 98 1/4 lbs Round 3 galls. E.57125 20-CIV 3.250 " 88 1/4 lbs Hex.ended 2 gall.6 3/4 pts. E.57279 Capacity of engine & radiator 19-CIV 4 galls. 1 1/4 pts. " " " only 1 gall. 1 1/4 pts. | ||