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).
Letter from radiator specialists Gallay Ltd. concerning the performance and specifications of a new Bentley radiator block.
| Identifier | ExFiles\Box 149a\2\ scan0295 | |
| Date | 23th December 1935 | |
| DIRECTORS: L. T. DELANEY D.{John DeLooze - Company Secretary} C. DELANEY C. T. DELANEY GALLAY LTD. SUCCESSORS TO GALLAY RADIATOR CO LTD AUTOMOBILE, AVIATION AND GENERAL SHEET METAL WORK, ETC. Specialists in Light Alloys, Radiators, Tanks, etc. TELEPHONE: WILLESDEN 3911-2-3 103-105-107-109, SCRUBS LANE, WILLESDEN, LONDON, N.W.10. Your Ref. Hs{Lord Ernest Hives - Chair}/Std.20/KW. Our Ref. SP{Mr Spinney}/LU. Experimental Dept. 23rd December, 1935. Messrs. Rolls-Royce, Ltd., Derby. STD Dear Sirs, We are in receipt of your favour of the 18th inst., and would advise you that we despatched on Saturday the Bentley radiator fitted with our three row 50 m.m. block, which we trust will be found satisfactory. Meanwhile we are afraid that the water flow 20 gallons per minute under full throttle is not quite sufficient to reach the maximum efficiency of heat dissipation of our type of block. Our block is made with very large waterways to prevent the chokage of tubes by fur deposit and to allow the highest possible flow. As you are aware, the efficiency of a radiator does not depend entirely upon the water flow but upon the speed of water inside the waterways. The waterways section of our block being twice as large as the "Harrison", the speed of water will be reduced in the same proportion if our block is working under the same conditions, and we therefore cannot expect in this way to get the maximum efficiency of our matrix. Therefore we advise you that the suitable flow for our matrix would be about 35 gallons per minute under full throttle. As requested we have pleasure in enclosing herewith the heat dissipation figures of our core compared with the Harrison. | ||