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).
Expressing concerns over the reliability and cost of a proposed riveting method for a steering lever ball on a 20 HP chassis.
| Identifier | ExFiles\Box 101\1\ scan0040 | |
| Date | 30th November 1925 | |
| RHC.{R. H. Coverley - Production Engineer} c. Hs.{Lord Ernest Hives - Chair} X5420 BYS/H.{Arthur M. Hanbury - Head Complaints} 30.11.25. 20 HP. CHASSIS. FRONT AXLES & BRAKES. SECTION 7040. N.SCHEME 2087. IMPROVED DOUBLE SIDE&CROSS STEERING LEVERS WITH PIN TO CARRY THE BALLS MADE SOLID WITH THE LEVER. The design referred to above is the side steering ball end which has a pin formed solid with the lever and taper on to which a ball is fitted. The ball is held down on to the taper pin by means of a central nut and bolt. The point I am writing to you about is, that in my opinion the locking of this by rivetting over is likely to be a doubtful factor, as in the first place it is not easy to rivet over the nickel steel, and the slotted nut which is used is likely to open under the rivetting. In rivetting it over, it is most important that a tool should be made which will accomodate the head of the central bolt only, and so ensure that when the rivetting is carried out none of the hammering required to rivet up the ends falls upon the ball or sphere. It will be important to carefully watch the scheme in practice as it seems to me to be a very expensive proposal in the first place, and not over-reliable in the second, as the slot for doing up the nut does not appear to me to be a very sound proposal to make a really secure job. BY.{R.W. Bailey - Chief Engineer} [Signature] | ||