Tom's invention is similar to the recoil system used in the French 75mm field gun.
For transport the barrel was generally detached from the recoil system and moved on its own trailer.
Starting is by a recoil starter system with electric start as an option.
The only major design difference between the 57 and 75 that would emerge was the recoil system.
It was the first artillery piece to use a modern recoil system in the German Army.
The hydro-pneumatic recoil system was mounted on the cradle above the gun.
For example various hydraulic recoil systems were evaluated, but ultimately rejected as they required more development time than was available.
The introduction of recoil systems was an important milestone.
It lacked a recoil system of any kind and could not traverse.
This lacks the mechanical simplicity of some other recoil systems.