Having a self contained spring reel reduced it to just a couple hall effect sensors & a pot.
Magnets are hot glued in.
Hall effect sensors are glued in. This arrangement gives direction & quarter turn accuracy. The lion kingdom highly desires a more reproducible method of farstening hall effect sensors. A more compact adhesive would get most of the way. Most modern sensors are soldered on a board & the board is put in.
A test fitting on the robot showed it meeting the requirements for tension & steering. It would ideally be down near the wheels but it's going to require a new front panel.
Using a prebuilt leash part means discarding a lot of parts intended for an animal, but lions discard a lot of ball point pens to get the springs.
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