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 condition and performance of chassis components including springs, dampers, and a telegauge.
| Identifier | ExFiles\Box 5a\3\ 03-page060 | |
| Date | 30th September 1931 guessed | |
| -6- The front road springs up to 15,000 miles when they were dismantled to fit the new set of springs sent from Derby, were in a very good condition, with no sign of any flaw detectable in any one of the leaves. The lubrication had been very good. The new rolled eye front springs that were fitted at this mileage have been examined and they appear to be in a very good condition. The buffer clearance for these springs was 1.75". REAR ROAD SPRINGS. O.S. N.S. Drawing No. F.57192 F.57192 Loaded lbs. 1075 lbs. 1060 lbs. Initial Camber. 5.9" 5.9" Material. S/SLM. S/SLM. The rear road springs have been examined without dismantling. No flaw can be detected and the lubrication appears to be satisfactory. We have had no trouble with the spring clips becoming loose. FRONT SHOCK DAMPERS to L.O.F.57908. REAR SHOCK DAMPERS to L.O.F.57888. Insert Seatings to Relief Valve as shown on Arrgt: Ex.6634. Loads set - L.F.90 lbs. R.F.115 lbs. The dampers were taken down and the filters examined half way through the mileage. No found that all the filters had collected a fair amount of foreign matter. The dampers were carefully washed out, filters cleaned, and the dampers replenished with fresh oil. These were again examined at the finish of the mileage, the load having remained consistent and the condition of the dampers were very good. It had not been necessary during the first part of the mileage and during the latter part of the mileage to add any further oil to the dampers, as only a very slight amount of oil leaked from the glands of the rear dampers. We have not had the symptoms of loss of movement with these dampers as those fitted to 25-EX. TELEGAUGE. The telegauge read correctly after attention to the faulty union, for approx. 4,000 miles. After this the gauge read approx. 2 gallons low. We examined the pipe lines and the gauge, the only fault found was the pump line was wet. The liquid in the gauge was definitely low but we did not find any trace of it in the pipe lines. After blowing through the pipe lines and reconnecting up, the gauge has again read correctly. | ||