Instructables
Picture of Knex Shifting Arm Lift
IMG_0005.jpg
IMG_0002.jpg
IMG_0004.jpg
IMG_0003.jpg

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!

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 
Remove these adsRemove these ads by Signing Up
1-40 of 50Next »
mine keeps stuffing up. For some reason the cranks and the gatekeeper are at the wrong lengths, and they keep stopping the motor
Shadowman39 (author)  TheUnfortunateHobbit11 months ago
Do you have a picture of that crank area?
oops no fixed it
Shadowman39 (author)  TheUnfortunateHobbit10 months ago
Yay!
I made it. Works good. Looks to be a good addition to my machine.
Shadowman39 (author)  koolcoasterkid1 year ago
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.
Shadowman39 (author)  koolcoasterkid1 year ago
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.
Sorunome1 year ago
Nice one! :D
How come you guys do so many collabs recently? :P
Shadowman39 (author)  Sorunome1 year ago
Thanks! We've only done two collabs, I wouldn't call that a lot. :-P
What about the other 3141592653589793238462643383279502884197169399375105?
Shadowman39 (author)  Sorunome1 year ago
Did you memorize those?
erm, yes.
Shadowman39 (author)  Sorunome1 year ago
Nice :-P
no, not nice, i once knew far more.
Shadowman39 (author)  Sorunome1 year ago
I only memorized the first 6 digits, lol.
i once knew 108
the key to knowing pi digets is boring biology lessons. don't question me. never.
Shadowman39 (author)  Sorunome1 year ago
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
Shadowman39 (author)  Sorunome1 year ago
We never posted those collabs. :-)
what other types of balls can i use, i dont have those,
Shadowman39 (author)  HanShotFirst1 year ago
If you don't have Knex balls, you could try golf balls.
www1391 year ago
wow!
I'll use this(hopefully)on my next ball machine
:-)
Shadowman39 (author)  www1391 year ago
Cool, thanks!
you're welcome!
cooljupjup1 year ago
nice!. it works with the black white balls?.
Shadowman39 (author)  cooljupjup1 year ago
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
Shadowman39 (author)  cooljupjup1 year ago
That's good. When we tried it out it wasn't as accurate, so I guess it's different for other people.
hahahahaah okay :)
Tom Buckey1 year ago
Looks good. :)
Shadowman39 (author)  Tom Buckey1 year ago
Thanks!
neat
Shadowman39 (author)  TheAwesomestDude1 year ago
Thanks!
your welcome
KneXtreme1 year ago
Awesome! If I hadn't already built my ball machine I would have used this lift. Great job on another collab.
Shadowman39 (author)  KneXtreme1 year ago
Thanks! When will your ball machine make its debut? ;-)
Your welcome. Hopefully in two weeks.
1-40 of 50Next »