Where to start? Arc inside a dynamic component

Conveyor-Straight.skp (61.4 KB)
Conveyor-Elbow 28R.skp (28.6 KB)

I created a Dynamic Component of a basic straight conveyor(attached) that allows me to enter some specific parameters. So far the Dynamic Component is working really well.

What I would like to create next is another Dynamic Component of a 90-degree conveyor(static example attached) that allows me to enter the same parameters as the straight conveyor plus specify an Interior Radius.

I can’t seem to come up with a good plan for the attribute settings to make the 90-degree conveyor work. I’m not asking for someone to do the work for me, but to point me in the right direction. I did find a post where the idea was to break the arc down into an individual arc segment, then rotate and copy that segment about its center point:

Trying to figure out a simpler way if possible. Any guidance is much appreciated.

first the rollers or any object can be position using polar coordinates and rotated

circle curves and spiral.skp (460.4 KB)

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