Judgement Call on specific part.

[EricH]

My first reaction is illegal, but I'm pretty sure that's partly because this is the first suggestion of this type I've seen. The relevant rule is <R38>.

<R38> Adhesive backed tapes shall not be used as a structural fastener, or to connect two or more parts together. Adhesive backed tapes may only be used as follows:
 Textured or coated tapes may be used to provide an alternate surface finish or treatment to a portion of the ROBOT.
 Velcro tape, any hook and loop tape or double-sided sticky foam may be used for attaching components to the ROBOT.
 Reflective tape may be used with optical sensors in small amounts.
 Adhesive backed tape and labels may be used for labeling purposes on wires, cables, pneumatic lines, etc.
 Electrical tape may be used as an electrical insulator.

So it looks borderline.

<R06> also may be brought into play, but I don't know if it will be.

use an anti-skid pad like Jon said. The type that are under welcome mats and mattresses and such.