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).
Instructions for adjusting steering load by adding or removing washers behind springs.
| Identifier | ExFiles\Box 72\2\ scan0238 | |
| Date | 13th December 1926 guessed | |
| contd :- -2- Add a second washer of .100 behind springs, load on ball becomes 340 + 450 +450 = 1240 lbs. This is what you have at present on the car i.e. 1240 lbs. instead of 340 lbs. The springs we are sending you are .100 longer than standard. These with two .100 washers behind them give 340 + 450 + 450 + 450 lbs. load or 1690 lbs. which we think is rather too much for British conditions. What we want you to do is to let R.{Sir Henry Royce} try the car as it is and then extract the four .100 washers and if you yourself can notice the difference, to let R.{Sir Henry Royce} try it again and explain that the poor steering is due to having reduced the load on each cross steering ball from 1240 to 340 lbs. and that we want to turn cars out with the equivalent of 1200 lbs. When you take the springs out, incidentally, see that their free length is still 2.375 i.e. that they have not taken a permanent set. If they have, all the loads will have been reduced by the amount of the permanent set. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer} | ||