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).
Technical analysis of gyroscopic effects on wheel wobble and steering mechanisms.
| Identifier | ExFiles\Box 170\3\ img049 | |
| Date | 14th July 1933 guessed | |
| -17- CENTRE OF GRAVITY OF SWINGING MASS. EFFECTIVE CASTER. Gyroscopic effects. The Gyroscopic effect of the swinging wheels upon the car is negligible. The guroscopic effect of the rocking car upon the wheels figures out to be appreciable. At A in the sketch of wobble the car is rolling at maximum angular velocity to the right, the effect on the wheels is a gyroscopic couple tending to straighten them out. At C the roll is reversed and the effect is again to straighten the wheels. Since A and C are close to A' and C', the positions of maximum wheel swing, gyroscopic effects act chiefly as a supplementary stiffening of the steering mechanism. The other effect of gyroscopic action is that due to the separation of points A-A' and C-C', gyroscopic reaction acts to some extent as damping on the wobble. This is one of the greatest points of difference between wobble and shimmy, since in the latter case gyroscopic reaction is an essential 'coupling' of the cycle, as explained above. | ||