Introduction: Knex Ball Machine Radon

Picture of Knex Ball Machine Radon

I built this ball machine back in early spring, but decided not to post it until the K'nex contest opened up. It's a smaller ball machine due to the fact that I still had my K'nex TV stand up. Still, It's got; 1 network, 4 lifts, a motorized ball distributer, and 8 tracks with some awesome new elements that will be posted on my guide.

This instructable is not instructions on how to build the ball machine. I made it that way because it would be easier to show.

If you like my ball machine, please vote for it in the K'nex contest. Enjoy the video! The song is Emergency by Jeremy James Whitaker.

Step 1: Track 1

Picture of Track 1

This is a pretty simple track. Just some tubes and panel levels.

Step 2: Track 2

Picture of Track 2

This track has some cool looking panel stairs and a 2 part ball arm.

Step 3: Track 3

Picture of Track 3

Yay! A roller coaster track that ends in an awesome spiral bowl.

Step 4: Track 4

Picture of Track 4

A new type of panel ferris wheel, a small, horizontal ball arm, and some simple stairs made out of bumpers from the knex pinball table.

Step 5: Track 5

Picture of Track 5

This is my favorite. It's a big reversing spiral tower.

Step 6: Track 6

Picture of Track 6

I call it, The Roller Coaster Stairs Track. A track made almost entirely out of elements made from k'nex roller coaster pieces.

Step 7: Track 7

Picture of Track 7

The fast panel drop. A track witch takes less than 5 seconds to complete.

Step 8: Track 8

Picture of Track 8

And last but not least. Track 8, the longest track of them all.


www139 (author)2014-08-15

Nice job you made it to the finals! ;-)

KneXtreme (author)www1392014-08-20

Thank you. Congratulations too you and your brother for winning second prize!

www139 (author)KneXtreme2014-08-20

Thank you also Congratulations! :D

KneXtreme (author)www1392014-08-20

Thanks. I didn't expect to win with my ball machine. I thought it would be my lamp.

www139 (author)KneXtreme2014-08-20

Me too! weird...

koolcoasterkid (author)2014-08-17

Nice machine! Path 5 is pretty cool and I love the small arm lift. Good job and gratz on making the finals.

KneXtreme (author)koolcoasterkid2014-08-20

Thank you. Congratulations for winning first prize!

hunter999 (author)2014-08-15

Congratulations on being a finalist!!! :D

KneXtreme (author)hunter9992014-08-20

Thanks! Congrats to you as well on winning runner up!

www139 (author)2014-07-10

Question: what tubing do you think is best for a knex ball machine?

KneXtreme (author)www1392014-07-12

I prefer the thicker tubing because it requires less connectors to keep it in place. The thin tubing is nice though for spiral bowls and tight turns.

www139 (author)KneXtreme2014-07-12

Thank you, I have found that We like the roller coaster tubing the best. In particular the 'screamin serpant' set tubing. Your answer was and is greatly appreciated!

knex akbar (author)www1392014-07-29

Do you know where I can buy that tubing seperately?

www139 (author)knex akbar2014-07-29

we found some on ebay

Knex2thelimit (author)2014-07-23

Great ball machine! I like the path selector-thingy. A quick question: where do you get all those panels? Are they just from years of collecting, or do you buy them from somewhere specific?

KneXtreme (author)Knex2thelimit2014-07-26

Thanks! Mostly years of collecting. I got a lot of the smaller ones off of ebay in knex lots that I bought. The bigger red and yellow panels I got in a knex tub a few years back. For a little bit the K'nex company used to make a knex tub with a bag of bonus pieces inside. All mine happen to be panels. Yay!

For a smaller ball machine, this thing packs a punch. In the overview part of the video you can tell it is a smooth performer. Great job, voted! :-D

P.S: I think you will forever be the "Panel King"! ;-)

Thanks. Yah, it is pretty smooth. Sometimes though the balls get stuck on that little dip in the last track.

Maybe that should be the name for my last ball machine "Panel King!"

Sorunome (author)2014-07-06

Awesome ball machine, I like how you used the score thingies of the electronic arcade :)

KneXtreme (author)Sorunome2014-07-08

Thanks. It took me awhile to figure out how to atch them.

Sorunome (author)KneXtreme2014-07-08

oh, right, how did you attach them? Did you stick them in a side hole thingy of a connector?

KneXtreme (author)Sorunome2014-07-12

Here's how I did it.

Sorunome (author)KneXtreme2014-07-12

ohh, that is pretty nifty! :D

Too bad I sold my electronic arcade :P

Gargamel-Knex (author)2014-07-08

Nice vid :P


KneXtreme (author)Gargamel-Knex2014-07-08

Thanks for the vote

Gargamel-Knex (author)KneXtreme2014-07-08

No problem :)

Wow! Please post a video!

There is a video in the intro. Click on "Show all 19 items", scroll down and you'll find it :)

Hah, hah. You beat me to it :)

:D You can also place it just after the first picture, then people don't have to scroll down. I also did that with Revolution.

sandroknexmaster (author)2014-07-07

I like that 2nd lift and the separator looks cool too. Awesome ball machine!

Thank you.

Gargamel-Knex (author)2014-07-08

Cool! Post a vid please!

There is a video in the intro. Click on "Show all 19 items", scroll down and you'll find it :)

ooooh Oeps :) Thank you, sandro

No problem ;)

ryry2011 (author)2014-07-07


knexinventions 49 (author)2014-07-06

Cool! I like the reversing spiral tower too.

About This Instructable




Bio: Hi, I'm KneXtreme. I'm a Christian and I'm home schooled. I love to build with almost anything especially knex. I also do ... More »
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