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).
Copy of a testimonial letter from M. Campbell to Brake Linings Ltd. regarding the performance of Duron clutch and brake linings in the 'Blue Bird' car.
| Identifier | ExFiles\Box 141\3\ scan0176 | |
| Date | 14th March 1933 | |
| COPY. Telephone Regent 1282. Old Bond Street House, 6-8, Old Bond Street, London, W.1. 14th March, 1933. Messrs. Brake Linings Ltd., Buxton, Derbyshire. Dear Sirs, I would like to inform you how satisfied I was with the Duron clutch and Brake Linings with which "Blue Bird" is now fitted. It is interesting to note that owing to the very high engine revolutions obtained, the clutch had to transmit over 2,500 h.p., but notwithstanding this tremendous torque, it gave no trouble whatever, but functioned perfectly. This is surely a very great credit to your linings. Yours faithfully, (Signed) M.{Mr Moon / Mr Moore} Campbell. | ||