User's Manual

®
Model No. ME-9845 Ballistic Pendulum Accessory
5
3. Slide the rod clamp of the support plate over the photogate peg and tighten the rod clamp
to hold the support plate in place. Keep the long side of the support plate perpendicular to
the white board.
4. Adjust the end of the track so that the car goes off the end into the catcher. (For more
information, see the Roller Coaster manual provided with the Roller Coaster Set.)
5. Cut two long pieces of thread. Wrap each piece of thread around a thumbscrew on the
support plate and thread it through the hole on either side. (For each side, the thread
should travel from the hole in the support plate to the outside hole on the catcher, through
the inside of the catcher to the other end of the catcher, and return back to the plate.)
Adjust the height of the catcher with the thread, making sure that it hangs evenly, and cut
off any excess thread. Put the rubber band on the catcher.
6. Cut one 5/8-inch square of the VELCRO hook tape, and two 5/8-inch square pieces of
VELCRO loop tape, and place each as shown in Figure 2 on the bottom of the catcher. Cut
one 1/34” piece of hook VELCRO and set aside.
7. With the VELCRO unfastened, run a piece of thread over the center piece of VELCRO
hook tape. Fasten the the thread in place by placing the reserved piece of VELCRO hook
tape on top. Figure 3 shows the VELCRO and thread on the bottom of the catcher.
VELCRO hook tape
VELCRO loop tape
thread
VELCRO hook tape
VELCRO loop tape
Figure 2: VELCRO and Thread Assembly
(toward bottom of catcher)
(upper cover)
Figure 3: VELCRO and Thread on Catcher
VELCRO hook tape
thread
catcher
(upper cover)