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 to Borg & Beck Ltd. requesting performance data and characteristics for a semi-centrifugal clutch.
| Identifier | ExFiles\Box 129\3\ scan0092 | |
| Date | 10th February 1936 | |
| X1110 Exptl. Dept. Hs{Lord Ernest Hives - Chair}/Smth.11/KW. 10th February, 1936. Messrs. Borg & Beck Ltd., Tachbrook Road, Leamington Spa, For the attention of Mr. Barker. Dear Sirs, We understood on the occasion of our last visit to your Works that the particulars of the Long clutch which you were expecting from U.S.A. are now to hand. We should be very glad for some information on the semi-centrifugal clutch if you are in a position to give it, viz:- (1) At the engine speed for max. torque, what proportion of the total thrust is provided by the centrifugal loading ? (2) What working value of /u is taken at max. torque ? Is this higher than would be taken for an ordinary clutch ? We should appreciate a curve showing the thrust characteristics of the clutch superimposed on the power curve of the engine in a typical example, if you have information available. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||