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).
Observations on flywheel vibration in various car models and modifications to a test rig for further investigation.
| Identifier | ExFiles\Box 63\4\ scan0100 | |
| Date | 21th December 1929 | |
| -3- Hs{Lord Ernest Hives - Chair}/TSH.1/HL.21.12.29.Contd. they might be expected to affect each other. The same phenomenon of flywheel vibration occurs with less intensity on the Phantom II, and in fact we first noticed it on this car. Here however it is not so serious, so we have commenced our experiments on the 20 HP., where it is a factor limiting the performance. On the S.S. the flywheel period manifests itself by a slight booming at about 60 m.p.h. in 3rd, which disappears above this speed. Many of the above observations are unconfirmed and will be repeated shortly. We are modifying the supercharger test rig to enable us to motor a 20 HP. engine from the front of the crankshaft, and observe the behaviour of the flywheel from behind. Hs{Lord Ernest Hives - Chair}/TSH. | ||