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).
With diagram detailing modifications to 'SS' short chassis frame side members.
| Identifier | ExFiles\Box 14\8\ Scan124 | |
| Date | 27th March 1929 | |
| X. 7380 BY.{R.W. Bailey - Chief Engineer} Hs.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} DA{Bernard Day - Chassis Design}4/M27.3.29. 'SS{S. Smith}' SHORT CHASSIS - FRAME SIDE MEMBERS ETC. With reference to the SS.{S. Smith} chassis with 144" wheelbase, of which we understand you are putting in hand a certain number of sets, you will probably have ordered the side members, but in case not we think they should be exact duplicates of the 150" wheelbase frames, with 6" taken out of the middle straight portion, thus : This taper part is exactly the same but moved forward 6". The effect of this, as no doubt you will see, is to keep all the spring fittings, cross member fittings, lengths, etc. and the battery and fittings, exactly alike in all cars. The intermediate brake rods, the tie rods, and the propeller shaft, are all simply shortened 6". If you would kindly send us a detail of the side members when made we would shew the effect on the subframe. DA.{Bernard Day - Chassis Design} | ||