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).
Tests conducted to determine how water enters a pivot pin bearing.
| Identifier | ExFiles\Box 2\12\ B002_X168-page226 | |
| Date | 16th January 1914 | |
| From Exp. Dept. Copies For:- J.{Mr Johnson W.M.} H.{Arthur M. Hanbury - Head Complaints} Ma. Da.{Bernard Day - Chassis Design} Wor{Arthur Wormald - General Works Manager}/H16/U16114. 16th., January 1914. Report re water in Pivot Pin Bearing. A.{Mr Adams} Teal. I have made tests as follows to find if water does easily get into the lower bearing of the pivot pin:- Test 1. The pin was cleaned of all oil and the bottom cap was empty. Therefore there was no lubrication at all. The hose was then turned on to the pivot and the steering was moved about while the water was running. After 30 minutes the bottom of the cap was found to be just covered with water and there was a film of water in the bearing itself. Test 2. The bottom cap and bearing were now filled with oil and the hose was again turned on for 30 minutes. After this one large bead of water was found in the cap and water was in the bearing itself having washed the oil out. Test 3. The cap and bearing were next packed with solid grease and the hose again turned on for 30 minutes. On examining after this test a slight trace of water was found in the cap and a little water was in the bearing itself. When the cap was first removed from the car to make the test water was found in it. This had got in while in ordinary use either on the road or while being washed. The water appears to get in at the top of the bush and is | ||