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).
Test report on steering, springing, shock dampers, propeller shaft, and wheel carrier modifications.
| Identifier | ExFiles\Box 182\M18\ img060 | |
| Date | 12th April 1941 guessed | |
| -8- The steering has been very good for absence of joggles on all except bad roads. On bad roads the joggles were not severe. The selectivity of the steering is considerably affected by the condition of the road traversed, damper load, and rear weight carried. Upon first trying the car here, the selectivity was not as good as could be desired at speeds of 60 m.p.h. and over. Improvement was made by increasing the load of the Hartford Dampers to 100 lbs, placing approx. 110 lbs ballast in the rear and decreasing the rear Hartford Dampers from 75 to 60 lbs. The side steering tube control springs had not quite the required set up in the normal position and allowed too much free movement of the steering. This was corrected by getting up the springs to give 2.5 lbs friction load in the normal position. It has remained improved, and is considered a very good standard steering. The springing is good for medium and high speeds. FRONT HARTFORD SHOCK DAMPERS LOR.F.83060 F.84519/20 Bracket - replacing F.83115/6, to give increased clearance for side steering tube. The clearance is now sufficient. We have had no signs of the bracket hitting the side steering tube as was before experienced. The nut of the ballend of the steering arm is now just rubbing on the axle, but not actually fouling. REAR & FRONT HYDRAULIC SHOCK DAMPERS to LOR.F.83611. Rear & Front loads set F.F. 115 lbs. L.F. 90 lbs. The dampers have remained quiet, no serious loss of oil has taken place, loads remained consistent. PROPELLER SHAFT & UNIVERSAL JOINTS to LOR.G.80001 - N.S.3364 S.T...536. G.79983 Propeller Shaft 2.750" Dia. G.79997 Coupling Flange. We have had no sign of propeller shaft whirl. On the maximum bump the shaft just touches the rear cross-member. The Universal Joints are a good job; no replenishment has been necessary. SIDE SPARE WHEELS CARRIERS to LOR.D.73412. Side Wheel Carriers fitted each side in conjunction with Steadying Stays to Lec.3021. | ||