There have been studies characterizing it more since then both analytically and quantatatively. There have been model bikes built with counter rotating weights

There have been studies characterizing it more since then both analytically and quantatatively. There have been model bikes built with counter rotating weights to eliminate the gyroscopic effect and it still works. Part of the complexity is they all work together so the parameter space is complex. People have isolated the effect of things like the head angle though or the gyroscopic effect.