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 Co. Ltd. requesting particulars, a drawing, and a curve for a Long clutch with centrifugal assistance for Phantom III cars.
| Identifier | ExFiles\Box 129\4\ scan0148 | |
| Date | 23th February 1938 | |
| 1110. Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler}8/MH.{M. Huckerby} 23rd. February 1938. Messrs. Borg & Beck Co. Ltd., Tachbrook Road, Leamington Spa, WARWICKS. For the attention of Mr.Barker. Dear Sirs, Confirming our 'phone conversation of this after-noon, we would be glad if you could kindly send us particulars of the Long clutch, with centrifugal assistance, suitable for the Phantom III cars, with a torque of 350-360 lbs/ft., 4500 R.P.M. can be taken as normal maximum, although 5000 R.P.M. might be touched under abnormal conditions. Would you kindly let us have a drawing and a curve showing the extent of the centrifugal assistance. We have in mind the 12" size, as we feel that the advantage of the lower inertia of a 12" plate might justify a higher working /u than that of the present 13½" plate. The location of the hub in relation to the fly-wheel face would be the same as that of the 13½ plate you now supply for us. Thanking you in anticipation, Yours faithfully, for ROLLS-ROYCE LTD. | ||