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Hey peeps! Shadowman39 and Tornado96 are back with our second collaboration, the shifting arm lift!

This lift uses two sets of arms that alternate on going up and down. The balls are shifted from one side to the other when the arms move. It uses a double crank at the bottom and a gate system to keep the balls in the lift.


Note: this lift works with both the original and newer Knex balls, but it isn't reliable with the newer balls. Modifying would be a good idea if you want it to work better with the newer balls. 

IMPORTANT:
Push the switch of the motor inwards for smoother movement.

Here's the video of the lift in action:


Direct video link
http://www.youtube.com/watch?v=E6haOsTXlN8

So, if you want to build it, let's shift to the next step!

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Step 1: Piece Count (Optional)

Well, you won't get very far without pieces will you? So here are the pieces you'll need to salvage to build the lift. 


Rods: 294

green- 58
white- 67
blue- 93
yellow- 34
red- 32
gray- 10


Connectors: 244

dark gray- 40
light gray- 1
red- 28
green- 32
yellow- 38
orange- 24
white- 9
blue- 15
purple- 57


Other: 89

blue spacer- 26
silver spacer- 28
tan clip- 7
Y clip- 24
small blue/brown gear- 1
red gear- 2
newer-style battery-powered motor (green)*- 1


Total: 627

*You can use a different motor if you wish, but you'll have to modify the motor section.
building it but it keeps jamming and snapping for some reason. any idea why?
Maybe it will fix itself when it's done. the problem is that the entrance bit(the one right in front of the motor that is step 1 on the guard bit ) gets pulled down too far and goes vertical, stopping the crank from working. I'm hoping once the arms are in, they sort of pull the entrance a bit. anyway, I remember building this years ago (before I had Instructables) and had the same problem. anyway this gr8 lift will be in my next ball machine :D
Built it! Really simple fix, Add a yellow rod here (The one that goes through 3d connector and stops just before the snowflake)
And now I have built the entire ball machine and this lift doesn't work...:(
<p>Nice lift! Not very many pieces either which makes it ideal. Nicely done!</p>
<p>Great Model</p>
<p>That's looking nice, thanks for building!</p>
mine keeps stuffing up. For some reason the cranks and the gatekeeper are at the wrong lengths, and they keep stopping the motor <br>
Do you have a picture of that crank area?
oops no fixed it <br>
Yay!
I made it. Works good. Looks to be a good addition to my machine.
Nice! Looking forward to seeing pictures.
Sent pics. A note for future builders, I replaced the blue rod on the arms with yellow rods and it improves reliability.
I uploaded the pictures but they were rotated the wrong way, even when I rotated them myself. I'm not sure what the problem is.
Nice one! :D <br>How come you guys do so many collabs recently? :P
Thanks! We've only done two collabs, I wouldn't call that a lot. :-P
What about the other 3141592653589793238462643383279502884197169399375105?
Did you memorize those?
erm, yes.
Nice :-P
no, not nice, i once knew far more.
I only memorized the first 6 digits, lol.
i once knew 108<br>the key to knowing pi digets is boring biology lessons. don't question me. never.
Biology was boring for me as well. :-P
It was only boring to me due to slow pacing in the lessons.
I knew there was something fishy... those are the digits of pi
jup, lol
We never posted those collabs. :-)
what other types of balls can i use, i dont have those,
If you don't have Knex balls, you could try golf balls.
wow! <br>I'll use this(hopefully)on my next ball machine <br>:-)
Cool, thanks!
you're welcome!
nice!. it works with the black white balls?.
Thanks, and yes it works with those balls, but not as accurately, so you'll have to modify a bit.
it works with the black/white balls i did`nt modify anything
That's good. When we tried it out it wasn't as accurate, so I guess it's different for other people.
hahahahaah okay :)
Looks good. :)
Thanks!
neat
Thanks!
your welcome
Awesome! If I hadn't already built my ball machine I would have used this lift. Great job on another collab.
Thanks! When will your ball machine make its debut? ;-)
Your welcome. Hopefully in two weeks.
Same for me =)
again you amaze me with your ibles and knex things.
Thanks!

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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