Mobile Robot Application:
A procedure to attach a baby stroller wheel to an automobile window motor.
Window motors from surplus catalogs have a square shaft, which makes attaching a wheel difficult. What follows is a procedure to attach a stroller wheel (which was also bought from a surplus catalog) to a window motor. Hopefully, the excessive amount of pictures will make up for the inadequate text.
2 1 inch, 6-32 machine screws
4 6-32 washers
2 0.375 inch, 6-32 machine screws
4 #6 hex nuts
1 HI-LEX motor, part number DG-PWH6A (any motor with a 0.375 inch square shaft)
1 2 inch length of 0.375 angled aluminum from a local hardware store
-drill and bits
First, cut a 2 inch length of the 0.375 inch angled aluminum.
Center the angled aluminum on the shaft of the motor, there
a snug fit. Mark drill holes on the side of the
Be sure holes don't hit the motor shaft.
Drill two holes on the backside of the aluminum between the
just drilled and the outside edge of the aluminum.
Use the two 6-32, 1 inch, machine screws to tighten the
on the shaft.
Turn the motor on. Hold a pencil still over the
to make circles on the aluminum.
Take the piece of aluminum off of the motor. Take
out of the
aluminum. Place the piece of aluminum over the baby stroller
wheel so the
circles on the aluminum line up with the shaft center of the baby
stroller wheel. Mark the position of the two holes in the
aluminum on the stroller wheel with a pencil. Drill where the
pencil marks are located.
Use the 6-32, 0.375 inch, screw to attach the angled aluminum to baby stroller wheel.
Use the 6-32, 1 inch ,screws to attach the aluminum to the
Tighten the screws 6-32, 1 inch screws. Be sure to use the four washers. Check for any wobbling in the wheel. If there is wobbling, loosen the screws and adjust wheel.
final inside view:
Final outside view:
(I added a reflective black-white pattern to count the number of wheel rotations)
Thatís it! Youíre done.
Last Modified: January 25, 2010
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