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).
Issues with stud flexibility, leaks from cylinder water jacket tubes, and fixing water jacket covers.
| Identifier | Morton\M1.1\ img008 | |
| Date | 1st August 1921 | |
| contd. -2- We have tried grooving the top of the stud and dropping on a slotted washer to take all the torsion. This appears to be an improvement but we think it suffers in the other direction, i.e., that there is no flexibility at all torsionally. We propose sending to Mr. Royce a small fixture and spanners and several studs of different types so that he can test for himself the feeling of flexibility in these studs. Tubes in cylinder water jacket. We have had a fair amount of trouble with leaks from these tubes. To start with, we found the drawn tubes which were bought for this purpose were not of satisfactory material. We have machined tubes ourselves and properly treated them. In spite of the care and precaution that was taken, we have not found it an easy job to make these tubes tight. We propose making a cast iron box the same dimensions as the cylinder block so that we can try conveniently different methods and fits as regards fixing these tubes. As there are about 100 of these tube joints to be made on every engine, we consider it is essential that the joint with these tubes must be made absolutely a foolproof and easy before we embark on any production. We believe the trouble will be overcome but it is a point which needs serious consideration. Countersunk screws fixing water jacket covers to cylinder. We have not found it easy to make a water-tight joint with the counter-sunk screws. One cannot be certain that the cone in the cover and the cone on the screw are going to bed in every contd:- | ||