Combination Models; Chain Conveyor And Spring Launcher - fischertechnik PROFI Dynamic XL Begleitheft

GB+USA
Tip:
If the balls do not reach the top,
check the shafts and slides. They
should move without friction. If
friction is present, your launching
ramp is slowed down so that it does
not have enough force to catapult the
balls all the way up.
Tip:
Note that pegs point up on the two
building blocks serving as a stop.
Otherwise the shaft could slide past
the stop and become jammed.
Obstacle - teeter-totter

Combination Models

Chain Conveyor and
Spring Launcher
Tip:
If you have problems with the
elevator equipment, help is offered in
the tips for the individual models in
the activity booklet.
P D
r o f i y n a m i c
You have installed a bolt to act as the shaft in your spring
launcher. Two springs are located around the shaft. Two
springs provide a higher force to accelerate your balls more
rapidly. Switching on the motor causes a gear to pull the
shaft toward the rear, tensioning the springs. As soon as the
springs are tensioned completely, the launching mechanism
is actuated shooting the ball upward at high speed.
Task:
Observe what happens when you continue to move the Dynamic flag on
the teeter-totter to the left.
The further the flag is to the left, the harder it is for the teeter-totter to move down. If you move your flag
all the way to the left, the balls are no longer heavy enough to move the teeter-totter all the way down.
■ This model is a combination of the chain conveyor
and spring launcher. However the obstacle course
itself has its own specific track shapes and various
obstacles. The balls all start on the chain conveyor. It
transports the balls part of the way up. After arriving
there the balls roll over the flex-rails directly to the
spring launcher. The spring launcher then catapults
the balls to the larger section of the obstacle course.
Here the balls roll through gates and fly over jumps.
At the end the balls roll back to the chain conveyor.
18
X L a B
c t i v i t y o o k L e t
This model includes an additional obstacle,
the teeter-totter. A ball rolls on the flex-rails
on to the teeter-totter. As soon as a ball has
rolled past the fulcrum point on the teeter-
totter, it tilts downward. This increases
the speed of the ball and at the end of the
teeter-totter it falls on to the next flex-rail and
continues rolling down through the obstacle
course.
Slides Stop block