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).
Technical note discussing pivot pin seizure and loose engine mounting bolts on chassis B-179-AE.
| Identifier | ExFiles\Box 27a\1\ Scan222 | |
| Date | 24th January 1935 | |
| W/P - Dr. X4013 HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}/6/KW.24.1.35. Chassis No. B-179-AE. MR. F.{Mr Friese} Edmond-Blanc. Further to my last note on this car, we have now gone into the question of pivot pin seizure, and are satisfied that no Bentleys have been turned out in an unsatisfactory condition with regard to pivot pin lubrication unless for some reason they have not been made to the drawing. Experimentally we ran into some trouble but it was cleared up before the cars left the Works. Therefore if you are really having an epidemic of the trouble it must either be due to a pipe breaking or to the supply failing due to a drip plug becoming choked, or to an error in erection or manufacture, or finally to the Bijur pump not being operative. We should therefore like some more information. Obviously if the hole inside the pivot is red with rust and quite dry, it is the supply of oil which is faulty. We presume you have never had a case where there was lubrication to the pivot and yet the pivot had seized. With regard to the loose bolts holding the front engine mounting, we should like to know whether in your opinion these had become slack due to inadequate locking arrangements for the nut, or whether you think that the bolts themselves had stretched. I rather expect that these bolts are used for holding wing stays, as they are on the English cars, in which case if the wing stay material is soft it is possible that these bolts cannot be tightened up in such a way that they will remain "put". Thank you very much for the drawings of the carburetters. HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||