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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).
Steering experiments conducted on car 2.EX with reversed Michelin disc wheels.

Identifier  ExFiles\Box 20\2\  Scan081
Date  23th April 1920
  
X.963

To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair}
c. to CJ.
c. to Bn.{W.O. Bentley / Mr Barrington}
c. to E.{Mr Elliott - Chief Engineer}
c. to Da.{Bernard Day - Chassis Design}
c. to By.{R.W. Bailey - Chief Engineer}
c. to EP.{G. Eric Platford - Chief Quality Engineer}
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X.963. X.3482. RE STEERING. X.3743. X.3791.
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Hsl/LG23.4.20.

We have been able to make some interesting experiments on the steering by means of Michelin disc wheels.
We carried out the tests on 2.EX Car which has run 10,000 miles. The steering on that car which is fitted with Michelin disc wheels, is not very good. It has the complaint that the steering is very light and that the steering wheel is constantly oscillating. After testing the car in the standard condition X.891 we reversed the Michelin disc wheels on the front of the car, i.e., instead of having the wheels dished inwards we fitted them so that they were dished outwards. This made the steering so that instead of being approximately, centre point the wheels were about 4 1/2" out of centre point. Everything else of course, was identically the same. We found that the steering on the car with the wheels this extreme amount out from the pivot was not at all bad. The oustanding difference one could notice was that the re was more fiction in the steering. The friction was there over the whole range. The friction was there if the steering was moved the slightes degree from the centre. There was a definite advantage in the steering when the wheels were fitted

contd.
  
  


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