I
picked up a cheap Triang track cleaner wagon on EBay you know the one with
those ghastly chunky wheels and cast bogies, no good for code 75 track.
Under the knife it went off came these bogies and the under frame was modified to take CAMBRIAN C72 "Ride-control" Bogies. Flattening the domed moulding that supported the old bogies then rivet holes in the domed moulding were opened to 5.6mm the clear the head of the slotted screw before gluing the body pivot moulding concentric over to original pivot hole on the domed moulding.
Sections of Evergreen 4.8 mm angle was glued to the wagon
underside and butted to the body pivot moulding for extra support.
Looks
better already, just waiting for some 3 hole 12 mm wheels to arrive