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).
Modifications to engine piping systems, including increasing pipe diameters and refining outlet connections under different schemes.
| Identifier | ExFiles\Box 178\4\ img020 | |
| Date | 11th April 1932 | |
| -2- HA/R18.A24/AM.11.4.32 cont'd (2) Parts to be modified :- The interconnecting pipe. Modification:- The dia of the pipe to be 1.5" O.D and to have a connection fitted to take a 1" O.D pipe. (3) Parts to be modified :- Front 'Y' branch pipe leading to main pipe. Modification:- With the increased dia of interconnecting pipe point (2) it will be necessary to have a larger spherical fitting, etc. This will require a new casting, or this the branches could be made shorter to allow a longer interconnecting pipe to be fitted thereby giving more clearance for the fitting of the 1" branches which on the present length of interconnecting pipe are a tight fit. (4) From the connection described on point (2) 1" O.D pipe is taken from each cyl head back to the header tank. The connection at the header tank being independent of the main pipe. SCHEME II. K.B.1.G. & K.B.1.F. Rear Cylinder. In our previous report we also said that it would be advantageous if the rear water outlet pipes were swept back where they joined the main water pipe. This has been confirmed and removes the necessity of fitting the extra pipe to the header tank as was recommended in that report for the Dart machine. In addition 1" restricting washers should be fitted at the cyl jacket end of the pipe. SCHEME III. This is really a refinement on scheme I. The front and rear cyl outlet connections being the same as for scheme I but the extra pipes instead of being taken into the header tank direct are lead into two additional connections fitted on top of the rear cyl water rail just above the point where the rear cyl outlet pipes enter the main pipe. Sketches are attached showing the two systems and details. | ||