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 Clayton Dewandre Company detailing the test results for Harrison and Marston engine blocks.
| Identifier | ExFiles\Box 149a\2\ scan0359 | |
| Date | 17th February 1936 | |
| REGISTERED OFFICE: TITANIC WORKS, LINCOLN. TELEPHONE: LINCOLN 1156 / 7. TELEGRAMS: TITANIC, LINCOLN. X/280 CLAYTON DEWANDRE COMPANY LIMITED. CODES USED: A.B.C. 6TH EDITION 5 LETTER. BENTLEY'S AND PRIVATE. [Logo: ENGINEERING AND ALLIED EMPLOYERS' NATIONAL FEDERATION] DIRECTORS: C.H. DADE, (CHAIRMAN). C.T. BLACKLOCK, (MANAGING DIRECTOR). R.M. GRANT, C.A. TITANIC WORKS, LINCOLN, ENG. CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF ENTIRELY AT CUSTOMERS' OWN RISK. REF. SEW/FB/BV. 17th February 1936. Messrs. Rolls-Royce Ltd., Nightingale Road, DERBY. houn hs{Lord Ernest Hives - Chair}/sm Dear Sirs, With further reference to recent correspondence the following charts are now available regarding two of the blocks sent for test. 608/B1 Mark V1 Harrison Block Dissipation V Air Flow. 608/B2 " " " " " V Water " 609/B1 " Marston " " " V Air " 609/B2 " " " " " V Water " The other two blocks will be tested as soon as the plant is free, which we anticipate will be by the middle of this week, and the results will be known some three or four days later. The trials indicate that the Harrison block is the better performer. Both the air and the water resistances are equal. The dissipation at 100° TD between mean water and air inlet does not fall materially with water speed, there being only 10% reduction (at maximum air velocity tested) for a change in water flow from 35 to 12 gallons per minute. This loss is however further increased by the greater fall in water temperature at the lower water flows. This loss is of greater consequence for low differences of temperature between air inlet and maximum permissible water temperature. Yours faithfully, CLAYTON DEWANDRE CO. LTD. (S.E.WILLETT) COMMERCIAL MANAGER. | ||