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 a 20 HP side steering tube to increase strength and fix wheel movement.
| Identifier | ExFiles\Box 56\4\ Scan032 | |
| Date | 14th December 1926 | |
| X52450 BJ. c. Hs. {Lord Ernest Hives - Chair} BY4/H. 14.12.26. 20 HP. SIDE STEERING TUBE. -------------------------- Referring to BJ2/E.13.12.26. and further to BY15/H. 9.12.26. I will put a card in hand as you suggest. The matter has already been discussed by Wor. {Arthur Wormald - General Works Manager} Hs {Lord Ernest Hives - Chair} and myself, but I will put your note back to Wor. {Arthur Wormald - General Works Manager} to have it confirmed by all the people mentioned. In regard to the new tube being tested on the bumping rig, it is on the bumping rig now, and will be on all cars going for 10,000 miles. The facts of the case are that the tube, so far as its shape and general form is concerned, is precisely the same as the old one. It has been increased in outside diameter by .0625", and in addition, the thickness of the material forming the wall of the tube has been increased by 60%. We are therefore quite certain that the tube in question will be at least 60% stronger than the old one, and since the old tube has given quite reasonable service, and only breaks after very long use in bad running conditions, we are quite certain that in introducing the new tube we will cut out the trouble. So far as the modifications to the steering itself is concerned, the Experimental Dept. are satisfied that this is a sufficient change to overcome the joggling and complaints about wheel movement. I think possibly you have in your mind a further point in regard to friction being added to either the pivot or the cross steering balls to prevent wobbles being set up. We propose to do this at the same time, but at the moment there is not sufficient information to decide whether we shall adopt the friction on the cross steering lever balls or friction on the pivots. Hs. {Lord Ernest Hives - Chair} has promised to let me have some definite information on this subject by tomorrow, as most of their comparisons have been completed. BY. {R.W. Bailey - Chief Engineer} Hs {Lord Ernest Hives - Chair} By RECEIVED [Stamp with date dial showing DEC 14 1926] | ||