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).
Test scheme to overcome wear on a thrust block and investigating the cause of rubbing vanes.
| Identifier | ExFiles\Box 149a\1\ scan0166 | |
| Date | 10th January 1938 | |
| W/K - Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} c. to By.{R.W. Bailey - Chief Engineer} c. to RHC.{R. H. Coverley - Production Engineer} 1269 Rm{William Robotham - Chief Engineer}/Std.3/JH.10.1.38. Referring to your Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}23/N.21.12.37. a scheme has been tried (Rm.{William Robotham - Chief Engineer}123) to overcome the wearing of the thrust block and has run successfully on our test rig for 200 hours. However we would like you to confirm that the squeaks from vanes rubbing is due to this cause, in our experience it is more often due to the white metal base which takes the thrust of the rotor in one direction pushing back into the case or else being fitted incorrectly so that the vanes touch the case. Will you please let us know whether the vanes are rubbing on the pump case as stated in your memo. or on the pump cover, is necessary to ascertain this definitely i.e. with a feeler gauge as the scouring action of the water gives an appearance on both faces which looks as though the vanes were rubbing. We have a scheme to overcome the last mentioned trouble on test at the moment. Rm{William Robotham - Chief Engineer}/Std. | ||