Introduction: Sliding Arm Lift, a Knex Ball Machine Lift

Hi everyone!

I bring you the instructions for the third new lift first used in my knex ball machine Elysium, the Sliding Arm Lift.

In fact, this lift was used twice in the machine, both were similar.

This is a small, simple lift, and nice to watch.

Its name refers to the arm sliding down every time it has lifted up a ball. This feature is actually really useful and not only a fun extra. The best example I can give is Elysium itself. The second Sliding Arm Lift in the video is located very close to the Ferris Wheel Lift. A normal arm lift could not be placed there, because the arms would have touched the ferris wheel.

The arm uses two black rods. I tested the lift with grey rods instead of black, and it didn't work properly, so the black rods are necessary.

If you build this lift, don't forget to read the image notes in step 5: Arm and Axle, they can be useful. When you have a question or problems while building, feel free to make a comment or send me a message.

Thanks for watching / building!

~Sandroknexmaster~

Step 1: Piece Count

If you want you can count the pieces before you start building.

Here is a list with all pieces included in this lift, named by their original colour:

RODS:

Green: 17

White: 17

Blue: 29

Yellow: 12

Red: 6

Grey: 2

Black: 2

Medium flexi: 2

Long flexi: 2

Total rods: 89

CONNECTORS:

Dark-grey: 11

Light-grey: 8

Orange: 8

Red: 12

Yellow: 25

White: 6

Purple: 13

Blue: 1

Total connectors: 84

OTHER:

Blue spacer: 5

Silver spacer: 6

Tan clip: 5

Y-clip: 4

Small blue gear: 2

Medium red gear: 2

Motor: 1

Total other: 25

Grand Total: 198

Step 2: Entrance Track

This is the track the balls will follow.

Step 3: Motor and Gears

As the title says, this step shows how to make the motor and gears section.

Step 4: Frame and Exit

The frame and the exit in one step, it's not too big for this lift.

Step 5: Arm and Axle

Look closesly to the pictures. The axle is a bit complicated, but the pictures in this step should help.

Step 6: Finished!

Your Sliding Arm Lift is finished!

Always slide the switch of the motor to the right.

Thanks for watching / building!

~Sandroknexmaster~

Comments

author
KneXFAN200 (author)2017-07-11

I'm going to put this on my ball machine! THANK YOU! Built and done!

author

Thanks for building!

author
kalab4 (author)2016-11-26

very nice! straightforward to build and not too many pieces. I will challenge my advanced kinder students (5 yr olds) to try. Only part I know they can't do is snap the axle.

author
sandroknexmaster (author)kalab42017-07-03

Thanks, wonderful to read your comment! Did they succeed? :)

author
kalab4 (author)sandroknexmaster2017-07-04

Yes they were very proud of it! One of them said, what he liked best about making it is it was hard, it challenged him and he likes a challenge.

author
stanthews made it! (author)2017-03-06

I had to modify it to take the clear motor, it works great. Thanks for adding it to instructables.

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author

Looks good, thanks for building!

author
Haze013 (author)2017-03-02

I made it!

author
sandroknexmaster (author)Haze0132017-07-03

Thanks for building!

author
Grasi (author)2016-05-04

Great!!!!!!!!!!!

author
sandroknexmaster (author)Grasi2016-08-26

Thank you!

author
FanPlastic (author)2016-01-31

Mine works just fine, unlike others. definitely going to use it in my next machine.

author

Good to hear, thanks for building!

author

Thanks, I used it in regent

author
master-splinter306 (author)2015-09-20

I love this lift! Keep it up!

author

Thanks!

author

No problem, you deserve it!

author
Linkin_J_Knex (author)2015-09-19

What's the difference between a black and a grey rod?

author

Blacks rods are stronger and bend less. In this case they also slide better. Build the lift and test both, you'll see the difference.

author

Built it. Found a second black rod half way through. It doesn't seem to slide back down though?

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author

Thanks for building!

Hm that's weird, you're the second one to say that. Both sliding arm lifts I had have always worked. Maybe the rods are bent?

author

Nope, perfectly straight. maybe yours are better kept? Anyway great lift but I took it apart :) I motorized my element and will make instructions soon yay! sorry to keep bugging you about it xD

author

Hm very weird, I'm sorry it doesn't work :(

author

Don't worry it's fine :)

author

Ah...I only have grey

author

Oh I have 1 black

author
dickheijboer (author)2015-09-21

Cool!

author

Thanks!

author
Lexi Knex (author)2015-09-20

hum i made it (i will take a photo) and i have a little problem my black rods dosent slide

(est ce que je suis supposer mettre de l huile pour que ca glisse mieux )

author

Hm they should be sliding properly, maybe they're bent? And yes you could try some oil, I don't know if that will work though.

Thanks for building!

author
Lexi Knex (author)2015-09-19

Nice man i will made it

author

Thanks!

author
www139 (author)2015-09-19

whoa! only 198 pieces??

author
sandroknexmaster (author)www1392015-09-20

Yup :p

author
Linkin_J_Knex (author)2015-09-19

OMFG second view :D I finished motoring my new element btw. EPIC lift as usal :D Looks awesome!!

author

0_o Piece efficient AND Doesn't I have all the right pieces to build it (For once) xD

author

Good, you're going to build it?

author

Yep :)

author

*Remove the " doesn't " from last message xD

author

Thanks! :)

About This Instructable

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Bio: Hey! I'm Sandroknexmaster. I like building with knex, especially ball machines. I live in Belgium. I speak Dutch, but also English and French. I ... More »
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