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 memorandum discussing the causes of high-speed wobbles, referencing Mr. Healey's paper on gyroscopic effects.
Identifier | ExFiles\Box 29\1\ Scan273 | |
Date | 16th September 1925 | |
C O P Y. R.{Sir Henry Royce} SJ. c. BJ. c. Hs.{Lord Ernest Hives - Chair} ------ BY7/H.{Arthur M. Hanbury - Head Complaints} 16.9.25. ---------------- HIGH SPEED WOBBLES. ---------------- Although the above matter interested me, I had never given it any really serious thought until this evening. My attention had been called to the matter by the damping proposal I have put forward and incidentally, I also happened to receive a copy of bound volume of I.A.E. proceedings containing Mr. Healey's paper in which he ascribes most of the virulence of the disturbance to gyroscopic effects, but a comparison of his theories with the experimental data he based it on certainly does not bear out his contention. Up to the present it had appeared self-evident that the gyroscopic forces induced by the road wheel oscillations were the paramount factor, but the data published by Mr.Healey to confirm his contentions seems to indubitably destroy the latter. Whilst one had, as a result of experiencing a very serious series of wobbles on a car with balloon tyres, been definitely inclined to accept the wobble as the origin of the resultant combined effects, it is clear in diagnosing the case this cannot be the case, as the wobble has not apparent connection with the diagonal (criss cross) vibration of the axle unless the gyroscopic theory by accepted as proved. but since in Mr.Healey's paper the CONT' | ||