Hello everyone! This is a lift for ball machines, and it's an inverted helix lift. This lift was first featured in Cataclysm (last picture shows it). It's similar to a regular double helix lift, except the tower rotates in the middle, and the helix is on the outside! Of course, there's still a tower on the outside supporting the helix.

This lift is much better than the double helix lift, because you can make it very high, since the tower in the middle is much stronger than a double helix. It's more smooth, and more fun to watch, too. :-) It does use a lot of pieces though.

Note: You can also make this lift with one strand of tubing instead of two. This way you'll use less orange-tabbed connectors and tubing. Go to step 2 for details.

This is different than the original used in Cataclysm. It uses much less pieces. If you have enough, you can make it as big and piece-consuming as you want.

Here is a video of the inverted helix lift in action!

Note: This lift does not work with newer Knex balls (balls from Motorized Madness, Big Air Ball Tower, etc.) because they are too big.

Step 1: Parts Count

Here's all the pieces that this lift uses.

Rods: 313
  • green-127
  • white-64
  • blue-59
  • yellow-34
  • red-11
  • gray-18
Connectors: 231
  • dark gray-20
  • light gray-3
  • red-22
  • green-7
  • yellow-58
  • orange-tabbed-32
  • white-9
  • orange-8
  • blue-29
  • purple-43
Other: 35
  • Y-clip-6
  • tan clip-3
  • blue spacer-16
  • silver spacer-7
  • battery-powered motor-1
  • strands of tubing-2: one 6 feet 3.5 inches long (191.77 cm), and the other 6 feet 4 inches long (193.04 cm). You don't have to cut the tubing, but it is recommended that you do. Go to Step 7 for details.
Total: 579

And you'll also need original Knex balls.

If you have enough pieces, then let's get building!
<p>Just finished making this beast. It's awesome working way better then any other lift I have tried. I made it taller and did a little tweak it a little bit to help the balls enter and exit the lift. I will hopefully be building this lift into a ball machine if all works out and I find the time to build it.</p>
<p>That looks great, thanks for building! I'm glad you got it to work well.</p>
I blame your cats
I'll tell them you said that. :-)
yay misty shadow and tony, right?
Toby. :-P
That's the same thing :P
Notice the &quot;b&quot; instead of the &quot;n&quot;, lol.
they are right next to each other on the keyboard :P
i can`t build this i only have the newer balls :-(
they should work too
With mine they were too big. :-P
fail &gt;.&lt; remove the grey rod :P
Ah, I see now.
hey shadowman I'm having a bit of trouble with the tubing because the ball keeps slipping through the tubing when the balls are close but when the balls are more spaced they work fine. also it doesn't work when there are balls on both sides so i can only use one side. Do you suggest anything to try and fix it?
Try tightening the tubing. When they slip through they fall down a level right? How tall have you made it?
Orange tubing is good ? :/
it probably wont work because the orange tubing is too thin and flimsy but you could try adding more supports.
could you just repeat this process to make the tower taller?
Yeah, but don't forget the middle tower as well.
Ok thanks!
I can't use the motor shown because it's SO SLOW!!! I'll just make one with an electric motor. But thanks for the instructions.
My mistake wrong motor<br>
Why are two 'passage ways' blocked?
You can unblock them, but you'll have to add gray rods to the middle like the other two passages. There's really no point in doing that though, because it lifts balls up pretty fast.
Coz they just are.<br>No, ok, probally because the motor doesn't have to pull so much up?
I don't like to gather pieces, cause it takes a long time, cause I don't sort my pieces (I'm starting to though).
You really shoult sort your pieces, it speeds bilding up stuff A LOT
yeah, i am getting small boxes
good decission
hey if u still have this built u should make it so at the top when they fall out the balls hav a ramp to go bak down to the bottom
It would be easy to do that, why don't you try? :-)
i had a look at the peice count and checked my peices and no that is right i had hardly any peices for this but another thing ur da best knexer i hav heard of keep buildin hectic stuff
Thanks! I never build tracks connecting the entrance and exit of the lift because I leave that part up to others who build it.
i probably would build cause i think i might have enough but i dont have big bendy thing
'big bendy' thing is tubing, the part that goes onto a connector that has a golden nib, looks like a yellow connector, and is colored golden. You can order tubing from <a href="http://www.knex.com" rel="nofollow">www.knex.com</a>.
Then it would be an entire K'nex ball machine all by itself!
Wow this is awesome!<br>Great job! I'm putting it on my newest ball machine!<br>I built the alternator lift and this one looks MUCH easy-er 9 steps is alot less that 41!
I built this in a shortened method because I did not have enough pipe for it.
Looks great! :-D Does the orange tubing work well?
is there a diffrence between the colors? if there is i didnt know that! :S it was a little tricky to get it to work rite.
The orange tubing is just a bit thinner and more flimsy than the RC tubing.
now what does the RC stand for?
Roller coaster (the thicker tubing).
ok, thanks! :D

About This Instructable




Bio: On my page you'll find lots of different Knex projects, from ball machine lifts to useful items. I hope you enjoy! &nbsp;_______________________ Current avatar ... More »
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