3
3. Find the U-shaped bracket mounted on the upper boom. To fix each leg at a proper angle to the upper boom, slide
each leg fully into the U-shaped bracket and firmly screw it
with two screws with a built-in knob (see Fig. 3). If not
attached at first, slide the two legs into the bracket and fix
them by the screws.
4. Connect the brace with the other end of each leg using two
screws with a built-in knob to stabilize the bipod (see Fig. 4).
5. Use prepared support stand and a clamp. Insert and clamp the supporting rod part of the lower boom into the clamping
hole of the support stand. Thanks to this setting, the launching angle of a projectile will be adjustable by changing the height
of the clamp part of the support stand and the spring firing pin (SFP) will smoothly work.
Fig. 4 Bipod
Fig. 5 Support rod with a support stand
How to use “Ball Release Unit (BRU)”:
BRU is equipped with a coil to electromagnetically suspend a “Free-falling Object” from the end of the boom (see Fig. 1).
In synchronization with triggering and releasing the spring firing pin, the power supply to the coil will cut off. Thus, BRU will
release the object simultaneously.
1. Prepare a DC power supply and make sure it is switched off. Connect the
built-in lead wires of Ball launcher (each of the red one and black one) to the
DC power supply (see Fig. 6 on the right).
2.
Grasp the knob of SFP, slowly take SFP from the barrel (
①
), and then,
latch SFP at one of its four equally spaced shallow cuts (grooves) (
②
) to determine the magnitude of launching the ball
(see Fig. 8).
3. Set the output voltages of the power supply to DC 3V and stick the free-falling object to the iron core of BRU in such a
way that the small steel part of the ball surface directly contacts with the iron core of BRU.
4.
Try to detect a threshold voltage value by slowly stepping down the voltage, at which BRU can no longer suspend the
Fig. 3 Assembling the bipod
Brace
Supporting rod part
(for adjusting firing angle)
Fig. 6
