Have almost completed converting one from what was originally a "Gaston" 4 wheel lever operated horse drawn scoop to 2 wheeled hydraulic scoop.
Used front stub axles hubs etc from a wrecked 744D Massey tractor, fitted re treaded 750x16 tyres.
Constructed an A frame to mount an 18x3 hydraulic ram.
Built an adjustable tractor hitch and converted the foot operated dump control to rope operation.
A home built scoop based on this design was featured in ads for Lincoln Welders in the late 1950s, It was used to construct tanks/dams up to 6000 cu yrds. A McCormick W30 tractor was used to
haul it.
Have the basic plans for this scoop and did intend to build it from scratch but was fortunate enough to find an old Gaston Scoop that still had a good
bowl (1 cuyrd approx.) and frame.