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).
Tests conducted to resolve high-speed steering wobbles on Phantom and Silver Ghost cars.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan113 | |
| Date | 1st August 1925 | |
| R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG21.8.25. To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. BJ. c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} ORIGINAL HIGH SPEED STEERING WOBBLES. VC457 8L+20 We have carried out a further series of tests on Phantom and Silver Ghost cars. Friction. We tried friction inserted in the steering gear and independent of the weight of the car. This was arranged by means of two shock absorbers of the Hartford type inserted between the cross steering tube and axle as in the sketch. We adjusted the shock absorbers until it took 12 lbs. at the steering wheel circumference to move the wheels with the axle jacked up. We could detect no definite improvement as regards steering wobbles. We increased the friction gradually when the wobbles decreased in violence until with friction equivalent to a load of 22 lbs. at the steering wheel they were not apparent to the driver. contd :- | ||