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Page 4 of 9
The wheels where perched from Tower Hobbies (Dave Brown Lite Wheels 3"). I then prayed apart the two nylon hub inserts, and riveted a large round horn on on of the nylon hub inserts. Then I drilled a hole large enough for the servo screw head to go into.
Then the wheel was then snapped back together. I made two of these wheels.
The caster was made from a small tail wheel and a .072" push rod. Bend the push rod as on the picture. The brass eyelets are there so the assembly wont bind.