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).
Revised springs for the India model side steering tube, increasing the maximum stress from 63,000 to 70,000 lbs/sq.in.
| Identifier | ExFiles\Box 56\4\ Scan005 | |
| Date | 27th October 1925 | |
| X. 5450 To BY.{R.W. Bailey - Chief Engineer} from DA.{Bernard Day - Chassis Design} c. to CJ+ Hs.{Lord Ernest Hives - Chair} DA{Bernard Day - Chassis Design}1/M27.10.25. INDIA - SIDE STEERING TUBE. We send herewith N.sch. 2067 shewing the revised springs in the rear end of the side steering tube for use with the steering with outside pendulum lever. The general idea is similar to the previous side steering tube joints but we have made the spring loads equal in both directions, and have made them slightly more than the stiffest one of the existing tube. With reference to the stress in the springs those now used appear to be stressed to only 63,000 lbs. per sq.in. at the maximum. In the springs proposed here we have put this stress up to about 70,000 lbs/sq.in. It would be interesting to know whether you had any reason, as a result of experience, for keeping the stress as low as 63,000 lbs/sq.in. DA.{Bernard Day - Chassis Design} | ||