Other types of radial piston motors include: compact radial piston motors, dual displacement radial piston motors and glued displacement radial piston motors. The springs are assisted by centrifugal pressure at better speeds. Radial grooves and holes in the vanes equalize radial hydraulic forces to the vanes all the time. https://riverkcqfs.pennywiki.com/4343586/new_step_by_step_map_for_hydraulic_motors