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 inquiring about the practical applications and capabilities of a vibration recorder for internal combustion engines.
| Identifier | ExFiles\Box 25\3\ Scan104 | |
| Date | 18th May 1923 | |
| X634 Hs{Lord Ernest Hives - Chair}/Rnl/LG. 18th. May 1923. The Cambridge & Paull Instr. Co.Ltd., Cambridge, England. Dear Sirs, We thank you for your letter of the 16th.inst. with enclosed photograph etc. We are interested in this vibration recorder, and should like to have any further information which you may be able to give us from time to time about it. We should also like to know any details of practical applications of it i.e., say a record of gear vibrations before and after quietening. It appears to us that if this instrument was used in conjunction with a running internal combustion motor, it would record such a variety of vibrations due to the functioning of the various portions of the engine, that it would be impossible to select the record of the actual vibrations under consideration. Is it possible to localise the record obtained by varying the method of attachment? Do you suppose that we could pick out such an elusive vibration as a crankshaft period, with sufficient accuracy to couple it up with the calculated period of the shaft? We ask these questions in order to be able to get an idea of whether this instrument is likely to be of sufficient use to us to make ultimate purchase a possibility. contd:- | ||