› › › SETUP 1
8
7
90°
6
6
7
90°
8
8
9
90°
4
Rotate the model 90 degrees clockwise.
Attach the variable-slope track holder to
peg
6
on the side of the tower under the
knob. Attach the variable-slope track with
the straight pivot post to pegs
6
and
7
on the side to the right of that, as shown.
Attach the variable-slope track to its holder
by putting the peg on the holder into the
hole in the track.
5
Rotate the model 90 degrees clockwise
again. Attach the momentum trap track to
pegs
8
,
8
, and
9
on the three sides of the
tower shown in the image.
6
Rotate the model 90 degrees clockwise
again. Attach the pulley wheel with the
straight pivot post to pegs
7
and
8
on the
side of the tower to the left of the knob, as
shown.
Tie one end of the
string to the arm of one
pulley cup. With a ruler,
measure five inches
on the string starting
at the point where you
tied the string to the
first pulley cup. Tie
the other end of the
string to the arm of the
second cup. Now, there
should be five inches of
string between the two
cups.
Hang the string from
the wheel and position
the left pulley cup
at the bottom of the
momentum trap track.
5 inches
of string
9
Gumball Machine Maker
4
5
6
