Follow-up report on flywheel vibration and the effectiveness of different balance weight schemes for a 25 HP engine.
| Identifier | ExFiles\Box 5\6\ 06-page133 | |
| Date | 19th October 1931 | |
| COPY. X5300 To R. {Sir Henry Royce} from He/Gry. {Shadwell Grylls} c. to Sg. {Arthur F. Sidgreaves - MD} Wor. {Arthur Wormald - General Works Manager} c. to E. {Mr Elliott - Chief Engineer} Da. {Bernard Day - Chassis Design} c. to By. {R.W. Bailey - Chief Engineer} He/Gry. {Shadwell Grylls} 5/WT.19.10.31. X.5300 X.834 X.5010. 25 HP. FLYWHEEL VIBRATION & BALANCE WEIGHTS Continuing our report He/Gry. {Shadwell Grylls} 6/WT.5.10.31. in which we stated that, with a thin flange flywheel and Chrysler balance weights giving full balance, (i.e. crank-shaft and big end), the flywheel vibration was entirely absent, we have now reduced the thickness of these weights to balance 2/3 of the total out of balance. These weights therefore, now balance the crankshaft only, and with them the flywheel vibration is still absent. We have shown previously that the flywheel is prevented from vibration by No.12 weight next to the flywheel, this weight being identical to both the Chrysler and the 8 weight scheme. We therefore expect similar results from the thin flywheel and a weight scheme fitted to the China(Experimental Engine) 10,000 miles test. He/Gry. {Shadwell Grylls} | ||
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).