Hello everyone! It sure has been a long time since I made an Instructable.  This lift is based on the stepper lift that was in a Knex set, except it doesn't use as much friction when the carts have to slide on rods. Instead, the carts are on small towers that are attached to axles. So, you can make it as high as you want! This lift was originally built in my unfinished Knex ball machine (pictures below). Since then, I have improved it, and it works much better than the original. :-) Also, I decided I would make this lift in the Power Tower Crane/Lost Mines color scheme, mainly because I was out of yellow connectors at the time of starting it. :-P

Here is a video of the lift in action:

Note: This version does not work with newer Knex balls (from Motorized Madness, Big Air Ball Tower, etc). But, you could modify it to fit those types of balls.

I hope you like it!
Also, I thought I might mention about my inactivity. I haven't been building Knex for a year or active on any websites because I was playing Minecraft the whole time. :-P But now I'm back into Knex again, and I'm building a big project (not a ball machine) that I will keep as a surprise as usual. I'm excited about being active again! :-)

Step 1: Piece Harvesting

You'll need these pieces to make the modified stepper lift. Note that the pieces are labeled as their classic colors, but of course you can use any color you want.

Rods: 826
  • green- 140
  • white- 92
  • blue- 302
  • yellow- 185
  • red- 88
  • gray- 19
Connectors: 634
  • dark gray- 54
  • light gray- 25
  • red- 66
  • green- 37
  • yellow- 107
  • white- 21
  • orange- 46
  • blue- 48
  • purple- 230
Other: 371
  • Y-clip- 42
  • tan clip- 20
  • blue spacer- 152
  • silver spacer- 150
  • battery-powered motor (new style*)- 1
  • ball socket clip- 2
  • small gear- 2
  • medium gear- 1
  • large gear- 1
Total: 1831

Of course, you'll also need original Knex balls.

*You don't have to use the newer style motor, but you'll have to slightly modify the motor section to fit a different motor. Also, keep in mind that using the electric plug-in motor will make the lift run faster.

If you don't have all of these pieces, then you may be able to use less in some areas, but it may not work as well.

Now that you've gathered all of the pieces you'll need, let's get building!
<p>Thank you!</p>
<p>I would use this lift, but man dat piece count! :-P</p><p>Nice job on it anyways. Innovative as always</p>
<p>Thanks man! And yeah, this is probably the most piece-consuming lift that I've posted. :-P</p>
<br> <br> <br> <br>I'm up to this step can't wait to finish,I mite build a ball machine with this lift if I can??? Anyway it's a wry cool,awesome and crazy lift.
Cool, and thanks! You should build a ball machine with it. :-)
hi i make it a little bit faster i replace the yellow gear with the red gear and it also works :)
hey dude this lift works with the newer balls i change some time in the cars. but i&agrave;m goning to use this in my ballmachine :D
Yeah, it requires modifying to work with the newer balls.
but it works and thank you for make isntructions for this lift :D
hi can you tell me how to fix it with the newer balls?
i wnat ot make this 2 cars higher. but it ruined my motor?
How did it ruin it? And what motor are you using?
it will bad my green motor don`t work :-(
this lift doesn`t work with the black/white balls it falls of the cars. and it cost to much pieces for me sorry i`m nog going to use it
In the Ible intro there's a note at the bottom saying that. And yeah, it's a pretty expensive lift. :-P
Great lift! It works very good. It's in my next ball machine!
Nice! Glad it worked out well. :-)
mine does not work, my knex balls fall out to early out of the carts. Can you help?
I don't know what exactly your problem is, but if you post a couple pictures of the carts I'll be able to help. :-)
never mind i fixed it =)
What is that knex tower in the background of picture 8? (Intro)
It's a lift I was building for a collab, but we gave up on it.
The one between you and rnb?
No, me Tornado and ALocke.
I never knew of that one D:
What was the error with multiple balls
The balls wouldn't transfer from one side to the other due to its height, and the force that it took to push the balls out. That's why I modified it to this version.
In the previous version couldn't you have just a stronger motor or used a counterweight
I don't think that would've helped. Each side was basically balanced anyway, since there were two sides that alternated.
So what was your way of fixing it
Building it like this one. :-P
Picture seven looks like my room, messy.
Messy rooms are da bomb! :-D I need to clean it up and vacuum, the rugs are growing hair it seems.
Absolutely! :) Luckily I have hard wood floors ( witch doesn't really help much) I've got dust bunnies running around all over the place :)
Having three cats doesn't help with the hair issue haha.
If you think three cats is bad I have four and two dogs.
And bunnies
Thanks for reminding me. I forgot about the bunnies :)
Haha, and I thought three was a lot!
Great design, just built it! :) However, I've gone through the instructions to make sure I've followed them correctly because when the arm things meet, the ball doesn't transfere... Have you got any idea why this might be happening??
Did you remember the pieces that push the balls out, or make them too short?
I made them with a grey and a Y clip, but they aren't pushing the balls :(
May I see a picture of the cart?
I can't! :( for some reason I cant add them to this comment.
Hmm... Try making an unpublished Ible, post the pictures there, and give me the link to the Ible. If that doesn't work, you could email them to me. If you want to email, I'll give you my address in a PM.
Thanks, I'll do that later :)
did you use a different motor in your unfinished Knex ball machine

About This Instructable


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Bio: On my page you'll find lots of different Knex projects, from ball machine lifts to useful (and useless) items. I hope you enjoy!  _______________________ ... More »
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