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).
Design and assembly of rear suspension components, including cantilevers and U-bolts.
| Identifier | ExFiles\Box 49\3\ Scan028 | |
| Date | 5th February 1921 | |
| Contd. -2- E1/G5.2.21. The rear dumb iron cantilever for carrying the spring has been made, as was first shewn on our general arrangement. The frame cross tube has been butted and bored out taper at each end, the cantilever pins being driven in tightly on the taper and pinned. Replacement can be affected by pulling out the cantilevers with a suitable withdrawing deveice after the pins have been knocked out. The dumb iron end should be drop forged to the design shewn, and bolted and rivetted to the frame, after being brazed to the cross tube. Referrinh now to the attachment of the springs to the axle, Mr. Royce wishes to use the form of "U" bolt shewn, which is a great improvement on the old style of fitting, as the stress affects in the bend are a known quantity. These "U" bolts can be made from good material since round bar is employed instead of a drop forging. The semi-circular saddle pieces can be drop forged and machined in pairs. E.{Mr Elliott - Chief Engineer} | ||