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).
Experiments conducted to resolve gearbox over-run rattles using a slipper flywheel on a specific car.
| Identifier | ExFiles\Box 104\4\ scan0184 | |
| Date | 4th February 1933 | |
| FILES. Y5310 4.2.33. GEARBOX. OVER-RUN RATTLES. ON B.HOPP'S ESQ' CAR. This car has a slipper flywheel of 50 lbs.in2 inertia, fitted at the rear of the gearbox, and we have carried out a series of tests with the slipper wheel set at various loads to re-produce over-run rattles. Although we have covered a poundage range of 19-34 lbs. at 4" radius, we were not successful in producing any over-run rattles. We finally set the slipper wheel to 13 lbs. and returned the car to the Repair Dept. It may be that the weight of the flywheel is influential in overcoming these rattles, and that we could reduce this still further, this is a matter for further experiments. Hs{Lord Ernest Hives - Chair}/F.Dodd. The original I. of the flywheel was 80 ins.lbs. xxxx | ||