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).
Report page detailing the condition and wear on various mechanical components after testing.
| Identifier | ExFiles\Box 5a\3\ 03-page206 | |
| Date | 14th January 1932 guessed | |
| -3- centre which could not be removed by this process. The ball and pin and the connecting tube pads were in good condition. All other details as in general report. OFF SIDE. The loads checked at 90/125 lb., the H.P. load thus being + 5 to 10 lb. Both main shaft and large diameter bearing were correspondingly lightly scored, the shaft being blakened over the scored section, but there was no appreciable decrease in diameter. The contact surface of the intermediate lever was not too good, and both piston contact pads showed signs of "flaking," in addition to the usual groove. The ball and pin measured .001" oval. All other details as in general report. REMARKS. A more positive loading device than the aluminium washer under the air vent adjusting screw is desirable, in order to preserve the .010" ball lift. We have previously had isolated cases of the Gap being closed, similar to the example quoted - N.S. rear. The finish of the inter-lever contact surface requires attention - note that both front levers were definitely a better finish than the rears. There is however a possibility that the pads "flaked" due to the load, the rear load being over 50% greater than that on the front pads. Since both rear main shafts showed similar symptoms of scoring there seems to be a slight lubrication deficiency at that point. It was also noticed that the oil holes of the front damper ball end pins did not coincide with the centres of areas polished by contact with the ball pads. This may be - in addition to grit - the reason why the top outer pads were scored most. HS{Lord Ernest Hives - Chair}/W.Bell. | ||