Comparison of vibration and connecting rod length between Goshawk I and Goshawk 11 engines.
| Identifier | ExFiles\Box 72\1\ scan0153 | |
| Date | 1st May 1924 guessed | |
| -2- con. rods. It will be seen that all of the engines enumerated are still on the comparatively flat part of the curves. Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 1. is said to be free of the vibration which occurs at very high speeds on Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11. The difference in con. rod length between these two engines is not great. E. {Mr Elliott - Chief Engineer} | ||
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).