Introduction: K'nex Ball Machine Lift: Giant Ball Catapult

This is my new lift, the Giant K'nex Ball Catapult, it shot to a distance of 4 meters (because my room is too small), it only contains a motor, it's totally automatic, the arm is tracted by a nylon cable, but the shot is very hard to regulate, because the catapult shot creates a role-back, and the elastics extend. But the final result is just awesome !!!

I could give you the instructions for build it, but this lift is (In my opinion) the must dangerous K'nex ball lift ever !


Lexi Knex (author)2016-11-14

Wow superbe idee

Thanks, I actually make instructions for build a V2.

hunter999 (author)2016-10-14

This is actually pretty awesome. Regardless if you post instructions or not, real well done. Didn't think such torque could be achieved with a standard red motor (mind me, I haven't touched K'NEX in a year).

thank you :-)

Mechanical Master (author)2016-10-23

I think I can upload instruction after Halloween.

Please be patient :-)

imans314 (author)2016-08-23


Please upload instructions.

All right, I can think about it. ( sorry for my bad English :/ )

Hi, I've started to make instruction, but it's loooooooong...

casperski (author)2016-09-04

I love it. This is a great project.

Thanks !

Linkin_J_Knex (author)2016-09-04

:0 awesome!

The Knex Inventor (author)2016-08-21

Awesome lift/catapult! You should definitely post this! Favorited and Subscribed. :-)

Thank you very mach ! :)

You are welcome!

You are welcome!

LittleBilly (author)2016-08-21

That seems dangerous, and I like it!

About This Instructable



Bio: I'm french, I live in a hause, I love build with K'nex and Arduino, I have an YouTube chanel, and for Halloween, my ... More »
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