Any group generating a solid has an option in its properties to hide the sold model, and there is the option in analyze to show under constrained points. Also note, a difference extrude can 'cut air', ans so you could draw you spoke creating shape, and rotate it, on a plane outside the weight, which is preferable, unless there is a reason such as creating an internal cavity, as makes it easier to wee how the model is is being built.

The rotate group is free to have the arc it spans changed, drag a point in one of the repeats to see it You could, instance, constrain a point on the center line of a shape to a radius. Hint a line has infinite length when it come to constraints, so a radius opposite of the point will do.