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 dampers, a petrol tank, and an oil level indicator drain cock.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page286 | |
| Date | 26th February 1933 guessed | |
| - 14 - weep through the gland. The front Damper with the screwed gland did not leak. The leak of oil from the N.S. rear gland was not excessive. There was no oil leaks from either glands of the front dampers. There was a slight weep of oil from all dampers at the joint of the control casing. The dampers retained their respective loads. The hand control was effective until the plungers tightened up through water and dirt penetrating the plunger guide. The weather during these runs was very bad. The dampers were continually being subjected to driving rain and sludge. We dismantled the dampers and found that water had got inside the control cover but had not penetrated the fabric. We eased the guides of the control plungers and fitted a rubberycovering to protect the ends from the water and sludge thrown up. There was no further trouble from this source. The dampers were sensitive to the control and the springing of the car was easily controled. If the design could be arranged the control could be placed to the rear of the damper which would overcome the above trouble. The hand controled dampers have given the most satisfactory results of all dampers tried. They were free from audible knocks and the anchorage remained firm. PETROL TANK LOP F 100275 ER SCH 194-5. The petrol tank remained free from leaks. There was splash marks on the wing from the filler cap after each run. The mounting of the tank gave no trouble. The electrical gauge unit in the tank was satisfactory. OIL LEVEL INDICATOR AND DRAIN COCK LOP E 100988 LEC 3222. The drain is on the small side and takes too long to drain the cranckchamber. It should also be better protected from dirt. The sliding cap pushes off the surrounding dirt which drops into the receiving vessel. | ||