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).
EAC engine over-run vibrations, detailing tests conducted with longer connecting rods.
| Identifier | ExFiles\Box 182\M20\M20.2\ img037 | |
| Date | 3rd May 1924 | |
| R.R. 403A (20H) (D.A. 652 20-5-24) J.B.D. ORIGINAL: Expl. No. x9030 x9550 REF: Hs{Lord Ernest Hives - Chair}2/LC/HS{Lord Ernest Hives - Chair} 3.5.24. EXPERIMENTAL REPORT. To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to C.J. R.G. c. to D.A. E.{Mr Elliott - Chief Engineer} c. to By.{R.W. Bailey - Chief Engineer} WOR.{Arthur Wormald - General Works Manager} S E C R E T. EAC. ENGINE - OVER-RUN VIBRATIONS. We have carried out tests with longer connecting rods (Hawk engine type) fitted to the above engine. The rods were changed over twice in order to confirm the results. The longer rods do make the engine appreciably smoother on retard, but there was still left a slight period of much reduced amplitude at the same speed. We are preparing to test the longer rods in conjunction with the stiffer engine coupling shaft on a second EAC. engine which is rather a worse example for over-run vibrations. Hs.{Lord Ernest Hives - Chair} | ||