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Introduction: Ballista

Ya'll have fun with this one, it is pretty darn cool. After you get finished building it pull the rubber band back and put it in the two slots of the yellow pieces that is atached to the trigger system.

Step 1: First Part of the Catapult

Self explanatory

Step 2: Main Base

This is the trigger system.

Step 3: Trigger System Cont. (Parts)

Step 4: Trigger System Cont. (rubber Bands)

Attach the rubber bands to the white rod on the bottom of the trigger. After complete, then attach the two yellow pieces to the bottom grey rod on the first piece.

Step 5: Bottom Frame

The pieces may be off centered a little bit.

Step 6: Bullet's

self explanatory

Step 7: Rubber Band for First Piece

Insert the rubber band on both sides through the orange pieces and attach the ends to the top grey rod. In the middle of the rubber band, you need to wrap it with tape.

Step 8: The End Result

hope you enjoy this one. Don't shoot your eye out !!!

Remember not to shoot at other people.



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    Not really a ballista- the trigger design makes it more like a crossbow.

    a ballista actually is a huge crossbow with weels, or on a standard you human XD haven't made it yet, need to get k'nex somehow :P alty

    here is an image of the greek ballista:

    and here is the roman ballista:

    Ballistae are torsionally powered.

    I could change the design and replace the picture.

    well acualy baslista is gust the german word for a normal crossbow, but we offten think of it as a huge cbow on wheels for the germans where one of the first 1s to make that

    Actually the romans were the first to make it.

    wrong dude. the greeks invented it and the romans perfected it and made it into a machine gun.

    i also belive the greeks made it for the seige that alexander did pree rome... but i ment that they were the first to make that name for romes big cbows (anyone know that latin word for ok)