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 Wilmot-Breeden Ltd. regarding the design and specifications for a car bumper.
| Identifier | ExFiles\Box 118\2\ scan0109 | |
| Date | 2nd November 1934 | |
| ALL COMMUNICATIONS TO HEAD OFFICES, CAMDEN ST, PHONE: CENT. 8593 (9 LINES) LONDON OFFICE & FITTING STATION 177, THE VALE, ACTON, W.3 WARPLE WAY ENTRANCE GRAMS: 'WILBUMPERS', PHONE, LONDON PHONE: SHEPHERDS BUSH 4471-2 BIRMINGHAM TELEGRAMS & CABLES 'BUMPERS' PHONE CENTRAL 8593 (9 LINES) A.B.C CODE 5TH EDITION SCHOFIELD'S CODE MANAGING DIRECTOR C L. BREEDEN. SERVICE & SPARES POWELL STREET OUR REF. HS{Lord Ernest Hives - Chair}/ES. YOUR REF. WILMOT-BREEDEN LTD MOTOR · ACCESSORY · ENGINEERS EASTERN WORKS CAMDEN STREET BIRMINGHAM 1 WORKS NO. 3 CAMDEN WORKS CAMDEN STREET WORKS NO. 4 TYSELEY PHONE ACOCKS GREEN 1657-8-9 AND PRIVATE LINE 2nd November 1934. Messrs. Rolls-Royce Ltd. DERBY. LES Dear Sirs, For attention of Mr. Leslie. We thank you for your letter of the 1st instant, and note your request for another bumper for the Rolls-Royce Bentley car, but to be of an overall width of 62". We do not think from our experiments that you will get anything like the results by decreasing the weight in the pots and using a longer beam movement, as you necessarily have to do if you increase the overall length of the bumper. However, all these things are really left to trial and error, as sufficient data cannot be taken of each model car to find out whether it is suitable or not, but we think that if you increase the beam length in the main spring you will have to increase the thickness throughout to allow the same frequency to be maintained, and then there is a possibility that less weight would be needed. However, it must be borne in mind that it is the frequency of movement plus sufficient weight to balance out the poundage set up in the chassis frame itself. We have put in hand a bumper, and we are also supplying the "U" bolts of longer length LARGEST MANUFACTURERS OF BUMPERS IN EUROPE | ||