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 inspection and modification of a rear shock-absorber and back axle, with notes on future testing.
| Identifier | ExFiles\Box 5a\2\ 02-page227 | |
| Date | 20th March 1930 guessed | |
| -2- We have checked up the rear shock-absorber bijurs and found that they were giving a very small amount of oil, which was not sufficient to feel down the connecting links. We have altered the connecting link pads to the drawings we sent out, and have fitted the 2" bijurs, which we do not think are passing any too much oil with one stroke of the bijur pump. Our tests will prove whether this is so or not. With the shock absorber arm in its normal position, we now get 4 drops from the ball and on the n/s and 4 drops from the o/s with one stroke of the bijur pump. We examined the bearings as he suggested, and found them to be in a very good condition, therefore we have not lost any oil through any wear having taken place. Re the back axle. The new back axle fitted is going exactly the same as the one that was brought out with the car. There is now a definite lateral shake in the pinion housing when cold. This is increased 50% when the axle is hot. The back lash has also increased 50% since the axle was fitted to the car, showing that wear of the pinion tooth is taking place. We do not propose to do the 500 miles per day until we receive the new exhaust pipe and bracket you are sending out. in the meantime we shall run and examine the results of the improved oiling to the dampers and check up the valve clearances. we note that we have now to do 14.000 miles, the extra mileage to be run with the new parts fitted. P.T.S. P.S. - We are enclosing the copper gauze, but have cut a portion off, so as to flatten it out for postal reasons. | ||