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).
Modifications to the 'SS' front axle to reduce high-speed wobble and steering shocks.
| Identifier | ExFiles\Box 29\1\ Scan347 | |
| Date | 21th September 1928 | |
| BY.{R.W. Bailey - Chief Engineer} from DA.{Bernard Day - Chassis Design} c. to BJ. HS.{Lord Ernest Hives - Chair} 4457 DA{Bernard Day - Chassis Design}2/M21.9.28. 'SS{S. Smith}' FRONT AXLE. X.7420 XX143X X.457 X.7810 We send herewith N.sch.2713 shewing the axle with 1" increased drop modified to give 1.750 offset between the pivot and the wheel, and increasing the distance between the plane of the wheel and the pivot by maintaining the original 2 1/2° pivot inclination. Advantage has been taken of these modifications to rebuild the wire wheel, so that the overall distance between the hubs is still further reduced, all these alterations having a tendency to lessen the probability of high speed wobbles occurring, as well as reducing steering shocks. Though we believe you have got some distance with N.sch.2625 we think the Expl: Dept: will consider the advantages of this new axle sufficiently great to justify going on with it in preference to N.sch.2625. We also send N.sch.2719 giving further views of the side steering lever for the above axle. DA.{Bernard Day - Chassis Design} | ||