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).
Comparing springs in the side steering tube of a Hispano car with the standard 40/50 model.
| Identifier | ExFiles\Box 22\1\ Scan121 | |
| Date | 29th February 1924 | |
| R.R. 403A (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} 44214 EXPERIMENTAL REPORT. Expl. No. X3463 44214 REF Hs{Lord Ernest Hives - Chair}7/LG29.2.24. SECRET. SPRINGS IN SIDE STEERING TUBE. To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to RG.{Mr Rowledge} DA.{Bernard Day - Chassis Design} c. to CJ. E.{Mr Elliott - Chief Engineer} c. to BY.{R.W. Bailey - Chief Engineer} WOR.{Arthur Wormald - General Works Manager} The Hispano car has springs at each end of the side steering tube. They are balanced springs. When in the normal position each spring exerts a load of 220 lbs. on the ball. They are double springs - one inside the other. The springs are 2" long, and each is set up .500". On the standard 40/50 we are using balanced springs at each end of the side steering tube. The springs when compressed .050" give a load of 170 lbs. This means normally, in the case of the RR., the springs exert approximately 170 lbs. on the ball, and each spring has a rating of 340 lbs. .100" deflection. In the case of the Hispano, the load is 220 lbs. on the ball normally, and the springs have a rating of only 43 lbs. - .100" deflection. We are obtaining a range of springs which can be tested in the 40/50 side steering tube. Hs.{Lord Ernest Hives - Chair} | ||