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).
Review of radiator construction focusing on weight and cost reduction for the Phantom II and Peregrine models.
| Identifier | ExFiles\Box 149a\2\ scan0119 | |
| Date | 31th January 1933 | |
| -3- Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey}7/MA.31.1.33. Cont'd.{John DeLooze - Company Secretary} The cost of the radiator filler cap - 12/11d. is large and warrants careful consideration with a view to reducing the figure. An examination of the P.II radiator reveals the same apparent disregard of weight. It is not necessary to detail each part, one of the outstanding features is the shutter mechanism, the complete weight of this is 15.375 lbs. of which 12.56 lbs. is shutters alone. The bottom tank is excessively heavy. A review of the whole radiator construction with the object of cutting down unnecessary weight and cost is we feel sure, worth considering. Peregrine. The Peregrine radiator constructed in the same manner as the 20/25 HP. car and consequently suffers from what we consider to be excessive weight and cost. It appears that now is the time to review the construction and reduce the weight and cost before it is put into production. The original radiator for this car, using hexagonal copper tube matrix tubes, weighed 94 lbs. complete and filled with water. By using a strip type matrix we have been able to reduce this weight to 86 lbs. saving 5 lbs. in the amount of water carried and the remaining three pounds on the matrix block. The matrix shell and shutters remain the same in each case. The main points on this radiator for consideration are, shutters, top and bottom tank and side plates. The side plates are brass castings (as on 25HP. car) we think these can be replaced by brass strips as on the P.II with considerable saving in weight and cost. The shutter mechanism weighs 11.56 lbs. of which 8.66 lbs is shutters alone or .75 lbs per shutter. (P.II & 20/25HP. = .78lbs. per shutter). Actually the Peregrine type of shutter is no lighter than the 20/25 HP. or P.II. By comparison it is interesting to note that the 75 Chrysler radiator weighs 61 lbs. complete; which of course includes thermostatically operated radiator shutters, it is thus 38 lbs. lighter than the 20/25HP. radiator. Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} | ||