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).
Selector trouble issue on a Bentley Chassis B.65.JY.
Identifier | ExFiles\Box 104\3\ scan0236 | |
Date | 20th January 1939 | |
To Mx.{John H Maddocks - Chief Proving Officer}... from Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}6/N.20.1.39. Re: Bentley Chassis B.65.JY - Smiley. Selector Trouble. With reference to your memo Mx.{John H Maddocks - Chief Proving Officer}12/G 14.1.39, when this trouble was discussed with me, I remembered similar trouble in France when we burst the soldered end plates out of the housing, also as a result of this the transfer holes being drilled to relieve the oil and air from the particular selector housing bearing in use. I therefore requested that the end plates be unsoldered and removed to verify that the two transfer holes were drilled. I did this because although I could see what looked like the holes at the bottom, I wanted to make sure. I can assure you that the transfer holes were there and not choked in any way. The position as I explained in my report was that the three housings were full of oil, so that although the transfer holes were drilled no benefit was obtainable as you cannot compress oil when all the compartments are full. The oil had to escape past the selector bearing and as these were a very good fit the escape was practically nil. I further explained that the trouble previously had not arisen until the car had done a fair mileage, which puzzled us, until we found the reason as explained. Since we have cured this particular one, it has explained two or three previous ones, where the Owner had complained of similar conditions which had been a mystery The main feature which is still puzzling us is how does the oil get there? We have an idea but not sure enough to quote it. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||