Instructables

Knex Parallel Arm Lift

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Here is my newest lift: the Parallel arm lift!
Most credits go to Shadowman, as he invented this lift first in his unfinished ball machine, I tried to rebuild it from the vid (only managed to rebuild the front part of the arm and some basic ideas).
So, this instruction is very complicated and nothing for absolutely beginners.
And it is also loooooooooong.
Be sure that all 3D connectors are turned correctly, with some you also have to pay attention that they aren't turned 180°, I'll note which in the image notes, so be sure to read them!
Sorry for any fails I made, making instructions was quite complicated.
And feel free to ask if you have any problems!
I use a plug-in motor, and I would recommend also using one as they have more power than the battery motors. Maybe you could use two battery motors...

Be sure to comment, rate and subscribe!

Oh, and the first one to make a piece count will earn a patch :D (But please be honest about it)

Be sure to check out my website!

 
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Step 1: Making the left base

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Just some structure...

Step 2: Gearing part one

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Be sure to make spacers etc. correct

Step 3: Gearing part two

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Step 4: Gearing part three

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Step 6: Gearing part five

Step 7: Gearing part six

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Here's also the motor

Step 8: Gearing part seven

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Step 9: Attaching the gear box

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Few, finally gearing is finished!

Step 10: Making the right base

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Step 11: The entrance track

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Step 13: The gate

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Step 14: The lower arm

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Step 16: Front counterweight tower shaft

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Step 17: Arm tower

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Step 18: The exit track

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Step 21: Modifying the first arm

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Step 22: Modifying the second arm

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Step 23: Making the top wheels

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Step 24: Making the first counterweight

All Y-connectors are just clipped onto the end of the rods.
The string between the counterweight and the connections (without the used for the knots) is 1.43 meters (56.2992126 inch).

Step 27: Making the second counter weight

It is actually the same as with the first one, just somewhat shorter.
The string is 86 cm long (33.8582677 inch).
cooljupjup2 months ago

Hey Sorunome!, i like the lift! i`ve build it it does work now! im going to use it in my ballamchine! :D

Sorunome (author)  cooljupjup2 months ago
yay, awesome :D
knexman321 year ago
is it ok if you use the smaller wheels instead of the bigger ones?
Sorunome (author)  knexman321 year ago
I would not recommend that as I use the wheels as a counterweight and the bigger ones weigh more. Maybe you could make your own counterweight that is about same heavy.
ok thx
Hey sorunome!

This is a very good lift: high, good looks, works good,...
So... I've built it!
I know you didn't invent it, it was Shadowman.
But congrats for rebuilding it from the vid and making good instructions.
I'll use it in my next ball machine, where I'm currently working on.
Here are some photo's, if you want you can add them to the last step of this instructable.

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Sorunome (author)  sandroknexmaster1 year ago
Awesome! i am always so glad when people make my stuff....
Me too! :)
Very cool!
Sorunome (author)  knexpert#108294761 year ago
thanks! :D
Very cool. I would make a piece count, but I'm too busy planning where this could go on my ball machine :P
Sorunome (author)  Purple Waffles1 year ago
Haha, xD
Why won't you come on skype?
Sorry for late reply. idk just dont find myself needing/wanting to use it.. too busy with school, knex and MINECRAFT!!!
Sorunome (author)  Purple Waffles1 year ago
no! Not minecraft! It's evil! :P
MUAHAHAHAHA. BUT i am working on a new machine... pictures shall come soon.
Sorunome (author)  Purple Waffles1 year ago
Cool, can't wait for pics!
BTW, why are you never on skype? :P
Am i supposed to be? :P
Sorunome (author)  Purple Waffles1 year ago
mhmm
/me runs
Too busy playing... MINECRAFT!!!!!!!

Don don don...

Lol i dont see the need to be on skype :P but dont worry i am still working on my next project :) but i need a name for it
Sorunome (author)  Purple Waffles1 year ago
minecraft is evil :P

And call it project next
/me runs
Lol its addicting. And what does /me runs mean?
Sorunome (author)  Purple Waffles1 year ago
Replaxe /me with sorunome
so i run faaaaaaaaaaaaar away :P
-_- lol
Sorunome (author)  Purple Waffles1 year ago
minecraft is evil :P

And call it project next
/me runs
jameshond1 year ago
work this lift with new style balls
Sorunome (author)  jameshond1 year ago
I think so, not sure as I don't have the newer balls.
okey thanks !!!
Tornado961 year ago
OH THE GROANING! :-( That's the only negative I see! Great job man!
OH THE GROANING!

That is what she said.

Im sorry i had to say that.
Not really necessary is it? :-/
Sorunome (author)  Tornado961 year ago
it is :P
Uh.... Ye of immature minds....
Sorunome (author)  Tornado961 year ago
hm
Sorunome (author)  Purple Waffles1 year ago
>.>
Sorunome (author)  Tornado961 year ago
Haha, thanks. :P
An excellent mechanism, my only concern is that the motor sounds strained. I can imagine with the mass of the arms this will be hard to avoid but perhaps if you were to guide the pulley so that the line of action was parallel with the ground you'd get a more even lift? Just a thought.
Sorunome (author)  The Jamalam1 year ago
I don't quite get what you mean but I bet if you'd make this lift twice and connect them correctly it'll run very smooth.
Oh, and thanks :)
Cool! How did you make the degree sign in the intro? I still think the counterweight should be heavier (the one that moves faster). Is that the tall ball machine I see to the left of it in the video? :-)
Sorunome (author)  Shadowman391 year ago
Thanks!
And there are a lot of reasons why the faster counterweight isn't heavier, in first place because it won't work anymore.
Yep, that is the fast ball machine.
And in the german keyboard layout, dunno if it is the same with the us one, I get the degree symbol by hitting shift and the key below Esc.
Oh the degree sign is also in the rich editor. :-P We don't have degree signs on our keyboards. 
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