lockable crossbow - snappyxo

© 2019, Mechanismic Inc. © 2019, Mechanismic Inc. http://www.snappyxo.com

Lockable CrossbowEstimated time to complete: 30 mins

http://www.snappyxo.com/

© 2019, Mechanismic Inc. Lockable Crossbow© 2019, Mechanismic Inc.

Parts Needed:8X BeamQty.2

5X BeamQty.1

4X BeamQty.4

3X BeamQty.2

5 in. RodQty.1

2.5 in. RodQty.1

L clipQty.10

H clipQty.1

Fixed PivotQty.4

PinionQty.1

Rod FlangeQty.1

SpacerQty.1

Rubber Band(Large and

Small)Qty.2

Lockable Crossbow


3.

2.

4.

1.


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6.5.

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9.

Rubber Band 1(Hook the ends into L Clips on either side)

Rubber Band 2: Use a really short rubber band and loop inside beam and around H Clip -- the rubber band should be in tension so that the locking mechanism keeps the launcher locked.

Locking Mechanism

This is an image of the crossbow with a loaded

arrow but the rubberband not ready

to fire.

10.


11.

This is an image of the crossbow with a loaded arrow and the rubber band ready

to fire!

Arrow

Rubber Band Stretched and Storing Potential

Energy

Locking Mechanism Preventing the Arrow

from Firing

Push the Locking Mechanism in the

Direction Indicated To Launch the Arrow!

© 2019, Mechanismic Inc.

Test, Modify, and Play!

Learn more at www.SnappyXO.com Lockable Crossbow© 2019, Mechanismic Inc.

1. Congratulations! You have completed a build of a crossbow. Now, hold the crossbow in one hand, and move the top bar of the locking mechanism sideways gently so that the spacer attached to the rod flange assembly can move freely.

2. The rod flange assembly should move and impact against the pinion-rod assembly in the front, thus launching it forward.

3. If the pinion-rod does not move well, repeat above steps, and hold the crossbow at a higher angle before releasing the lock.

4. How can you modify the design so that your arrow can go farther?

5. Can you change the design of this crossbow to launch more than one arrow at the same time?

lockable crossbow - snappyxo

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