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).
Remedies for a fouling issue with the 'SS' Cross Steering Tube.
| Identifier | ExFiles\Box 12\1\ 01-page130 | |
| Date | 17th April 1929 | |
| BY.{R.W. Bailey - Chief Engineer} Hs.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} 47420 DA{Bernard Day - Chassis Design}4/M17.4.29. 'SS{S. Smith}' CROSS STEERING TUBE. X.7425 X.7420 Referring to Hs{Lord Ernest Hives - Chair}/Rnl/LG12.4.29. we do not understand this foul as our own drgs. both of the shock dampers and the front axle, shew plenty of clearance. We should be much obliged if a layout could be sent us of the actual pieces involved, so that we can see where the discrepancy arises. With reference to the remedy, if the cross steering lever and the shock damper casing are in production we presume the easiest thing will be to shift the position of the set in the cross steering tube as you suggest. Incidentally we may say that we did not think there was a set in the cross steering tube, as our drgs. indicate that it can, and should be, taken out. If the shock damper casings are not actually made a very simple remedy would be to rock the shock damper casing backwards about the centre of the rocker shaft. This could be done by shifting the position of the flange in reference to the body of the casing, and as the former is already a loose piece would present no pattern difficulties. It would also be necessary either to modify the rocker shaft or the inner lever to correct the relative position of the two levers. If the casing is rocked through 20° it would give approx. .3 additional clearance, which we think would overcome all troubles. A further remedy would be to drop the ball ends on the cross steering lever with reference to the centre of the wheel. This would not be any detriment to the cross steering levers, though it somewhat reduces the ground clearance. This additional drop must not of course be too much - we suggest .250 as a maximum. The objection to it is probably that the levers are already made. We think the best thing is to have you to choose which alternative is most convenient, but we should be much obliged if you would tell us which one you choose. DA.{Bernard Day - Chassis Design} | ||