Faults found with an Elliott speedometer and comparing it to an A.T. principle model.
| Identifier | ExFiles\Box 8\2\ 02-page52 | |
| Date | 11th March 1925 | |
| W/S. {Derby Works / Sales} To Sg. {Arthur F. Sidgreaves - MD} from Hs. {Lord Ernest Hives - Chair} c. to BY {R.W. Bailey - Chief Engineer} /C. HS {Lord Ernest Hives - Chair} 3/LG11.3.25. RE. ELLIOTT SPEEDOMETER. We regret the delay in replying with reference to Elliott Speedometers. But unless we are running a straight-forward 10,000 miles test, it is very difficult for us to test speedometers because we are continually changing axle ratios, bodies etc. These speedometers have run on a car but were taken off because of the following obvious faults. (1) Hand on the speedometer is very unsteady making it difficult to read the correct speed. (2) Instrument itself makes an audible noise. (3) The drive is noisy. (4) The gears in the reduction box make a noise. Given the same workmanship, there is no doubt that the speedometer on the A.T. principle should make less noise, should be more reliable and have a longer life than the Elliott speedometer. We always recommend that we purchase from any outside firms any part we wish to test, so that we are free from obligations. We could be wholly employed in testing free samples of accessories and oils from outside firms, if we did not refuse to accept them. Hs. {Lord Ernest Hives - Chair} | ||
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).