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. regarding rear axle 'overun groans' in a 25/30 HP car and asking for suggestions on damper springs.
| Identifier | ExFiles\Box 129\1\ scan0086 | |
| Date | 19th December 1936 | |
| Experimental Department 19th December 1936. Rm{William Robotham - Chief Engineer}/Smth.5/AP. Messrs Borg & Beck Co.Ltd., Tachbrook Road, LEAMINGTON SPA, Warwickshire. For the attention of Mr.H.T.Barker. Dear Sirs, Unless we fit a propeller shaft damper to our 25/30 HP. car., we are not entirely free from overun groans in the rear axle at certain speeds. We have tried yellow and red damper springs in the clutch driven plate without noticing any difference. Can you suggest any other damper spring poundage which is likely to help us.? Possibly you have available the experience of some other cars of a similar size. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||