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).
The performance of hydraulic dampers, the steering column and box, and the rear axle.
| Identifier | Morton\M18\ img049 | |
| Date | 23th April 1934 guessed | |
| -6- HYDRAULIC DAMPERS AUTOMATICALLY CONTROLLED. Rear LOP.F.85733. Sch.411-468. Front LOP.F.85733. Sch.411-469. Strengthened main cylinders with smaller feet and increased dia. bolts. The dampers have not given any indication of loss of poundage. The riding of the car has answered to the damper control. The dampers have remained free from knocks, the anchorage firm, with no loose nuts. The loss of oil during the last 5000 miles has been as follows:- N.S.R. 25 cc. O.S.R. 14 cc. N.S.F. 10 cc. O.S.F. 15 cc. The gland of the O.S.R. shows the packing working through. STEERING COLUMN & BOX. N.S.3762/3. 376c. LEC.3094. Incorporating Friction in the column F.80522. The steering has been considerably improved by altering the spring loads in the side steering tube, of which particulars have been previously reported. The friction load in the column was reduced. The steering was made selective and stable. Oscillations of the steering wheel have been reduced and with less kick. There is however, a feature with the friction in the pivots which shows up in the peculiar wear of the front tyres and is detrimental. The inner tread is worn in a series of wedges, also on parts of the tread there is a distinct scrubbing action. We assume this is caused by the road wheels oscillating on the pivots, and the friction grip on the road is heavy and light corresponding to the action of the road springs and the friction on the pivots, evidently the amount of friction varies greatly. REAR AXLE. LOP.C.80430. N.S.3921-3722. R.R. SCH.457. 11 x 41 Ratio. The axle has remained consistent with a period of noise between the speeds of 45-55 M.P.H. This varies according to the torque whether pronounced or not. At all other speeds it is quiet. Oil has drained down the O.S. axle tube and eventually got on to the brake shoes due to the drain in the brake anchorage unit becoming stopped up with grease out of the wheel hub. The amount of oil was actually very little that had escaped but there was a considerable quantity of grease that had worked out of the wheel hub. This is detrimental as the heat generated | ||