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).
Conclusion of a comparison between DES.1613 cylinders and standard Kestrel cylinders regarding performance and weight.
| Identifier | ExFiles\Box 179b\2\ img138 | |
| Date | 19th November 1932 | |
| -5- Ha/Yng.2/EW/19.11.32. Cont'd.{John DeLooze - Company Secretary} CONCLUSION. The characteristics of DES.1613 cylinders for power, detonation, fuel consumption, etc. are appreciably the same as the standard cylinders. As regards water flow DES.1613 are equal to the 1932 standard Kestrel for all scheduled test conditions but there are differences in the flow characteristics of the respective types which we intend to investigate further, running both water and evaporatively cooled. From the tests already carried out DES.1613 cylinders do not show any outstanding advantages over the present standard type, however, the deciding factor will be their capacity to stand up under conditions of high power when run evaporatively cooled as well as water cooled. Comparing weights - (1) DES.1613 Cylinders. Top Water Rails. Induction System. (2) Standard Cylinders. Induction Pipe, Manifolds and connecting piece. Top Water Rails. (WTS. TO FOLLOW). Ha/H.R.Young. Attached Curves. 350/1/2/3. | ||