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).
Test report on the reversibility of various makes of steering systems to investigate steering wobbles.
| Identifier | ExFiles\Box 28\4\ Scan055 | |
| Date | 16th September 1913 | |
| From Exp. Dep. Copies for: J.{Mr Johnson W.M.} R.{Sir Henry Royce} Da.{Bernard Day - Chassis Design} Na.{Mr Nadin} Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}19/L16913. September 16th.1913 Re Steering Wobbles. X.457 I have repeated the tests to obtain the degree of reversibility of various makes of steering but in this series of tests a load was applied to the steering wheel giving a resistance of 100 inch lbs. A lever was fixed to the stub axle and a pull (by means of weights on a cord running over a cycle wheel which made an excellent idle pulley) was exerted at a radius of 20" from the pivot pin. The load was applied to the steering wheel by fixing a bicycle wheel rim to a piece of board and clipping the board to the steering wheel. A cord was then attached to the rim and circled round it, then passed over a cycle wheel which was bolted to a standard and weights were suspended from the end of the cord. The weight applied was 8 lbs at a radius of 12½". | Type of Steering. | Load in lbs at 20" radius from pivot pin required to overcome 100 inch lbs at steering wheel. | |---|---| | | Steering to right. | Steering to left. | | R.R. "C" type 2004 chassis. | 106 | 94 | | Delaunay-Belleville. | 113 | 109 | | Napier. | 92 | 107 | | ||