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 results and proposed alterations for water pump glands.
| Identifier | ExFiles\Box 149a\1\ scan0007 | |
| Date | 9th May 1927 | |
| To BY.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X7150 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG9.5.27. WATER PUMP GLANDS. X8150 X4590 Tests have shewn that both the glands shewn on Sch.751 are a workable proposition without the lubricating holes in the shaft to the front bearing. Actually we have run Fig.1. 10,000 miles on 12-EX without trouble and therefore we think that this is the scheme which should be adopted. The main alterations that we have made are :- (1) Block up the grease hole in the shaft to the bearing nearest the rotor. (2) Increase the dimensions of the actual asbestos packing using five turns at the bottom and four at the top. These packings, being soft, are otherwise likely to allow the brass angle pieces to come choc-a-bloc. (3) Allow hand adjustment to squash the gland up choc-a-block initially, then the spring follows up, obviating further adjustment. The spring could be made 5 lbs. heavier if it can be got in. The attached print shews the slight increase in packing thickness which allows the hand adjustment to form the gland. These alterations are improvements but not essential as they were not incorporated in the original. If you could let us have a finished drawing of Sch.751 Fig.1. with the alterations mentioned we will circulate it for standardisation. One other point that we have been trying out is a 'V' shaped annular ring on the face of the rotor with a spring behind the rotor to keep it to its work as in the attached sketch. contd :- | ||