Introduction: Knex Stair Lift

I finally decided to post my stair lift. It's similar to the stair lift I used in Wipe Out, except for a few modifications. The steps sort of work like pistons, going up and down on rods of different length. Each rod is a green rod higher than the one before it. This one has an improved design since the last one, like better platforms and an enter and exit track. I also made it more reliable.

This lift also works with the newer balls.

EDIT:  This Instructable reached 4.13* within a day after posting.

Video:



I hope you like it!

Step 1: Parts List

Before you begin building, you'll want to gather all of these pieces:

Rods:  296
green-85
white-81
blue-86
yellow-41
red-3

Connectors:  261
dark gray- 57
light gray-20
red-31
green-12
yellow-30
white-5
orange-28
blue-35
purple-43

Other:  122
blue spacer-47
silver spacer-43
Y clip-5
tan clip-23
(metallic) blue clip-1
red gear-1
blue gear-1
battery powered motor-1
balls-at least 1

Total:  679

If you have all these parts, then on to the next step!

Step 2: The Axle and Motor

In this step you'll build the axle that lifts the stairs up and down and put the motor on. The axle is part A, and the motor is part B. Don't forget any spacers!

Step 3: The Tower, Side 1

This is one side of the tower. You'll find that there's a pattern on the tower. Not much more to say, but pay close attention to the pictures.

Step 4: The Tower, Side 2

This is the second side of the tower.

Step 5: Combining Steps 2-4

In this step you'll assemble what you have built so far. Make sure to connect everything when putting the towers together.

Step 6: The Motor Section and Entrance Track

After you're done building the motor section and entrance track, you'll attach them to the model.

Step 7: The Steps

Now you finally get to build what the stair lift is all about. You'll have to build four steps.

Step 8: The Exit Track

This is the easiest step of this Instructable.

Step 9: Adding Steps 7 and 8

You're almost finished! Just add the steps and exit track to the model. Make sure the steps slide on the yellow rods.

Step 10: Done!

Hooray, you finished the stair lift! Now put the balls in, turn the motor on, and watch the balls go up.

Thanks for viewing, and don't forget to subscribe!

Comments

author
The Knex Inventor made it! (author)2016-06-18

I just got some more K'NEX motors in the mail today, so I decided to make this. Very nice lift! I am planning to use this in my next ball machine. Here are some pictures:

IMG_9833.JPGIMG_9834.JPG
author

Thanks for building, it looks good!

author

You're welcome! :-) If you want to see some pictures of my new ball machine in progress, take a look at my Orangeboard.

author

I saw it, looks cool! And nice pet shop building, my brother has that one haha.

author

Thanks for the compliments! :-)

author

Sorry for the blurriness in the last photo.

author
Shadowman39 (author)2015-03-25

Yeah, I'm not sure what the limitations are though. I built one that was 5 stairs and it worked fine, and I think there have been 6-stair ones that work well too.

author
trollface34 made it! (author)2014-08-18

I made it ..... again!!!!! like your cat it always gets in the picture!!!!!!!!!!!!!!!

picture005.jpg
author
Shadowman39 (author)trollface342014-08-18

Ha, looks good!

author

I've tried multiple times to make this 1....but it never lines up right :(

author

Do you have any pictures of the parts that don't line up right?

author
trollface34 (author)2014-08-18

my foot always gets in the picture

author
trollface34 made it! (author)2014-08-18

I made it ..... again!!!!! like your cat it always gets in the picture!!!!!!!!!!!!!!!

picture005.jpg
author
trollface34 made it! (author)2014-08-18

I made it ..... again!!!!! like your cat it always gets in the picture!!!!!!!!!!!!!!!

picture005.jpg
author
trollface34 made it! (author)2014-08-18

I made it ..... again!!!!! like your cat it always gets in the picture!!!!!!!!!!!!!!!

picture005.jpg
author
trollface34 made it! (author)2014-08-18

I made it ..... again!!!!! like your cat it always gets in the picture!!!!!!!!!!!!!!!

picture005.jpg
author
trollface34 made it! (author)2014-08-18

I made it ..... again!!!!! like your cat it always gets in the picture!!!!!!!!!!!!!!!

picture005.jpg
author
trollface34 (author)2014-08-13

i've made it before and cause it was so good i'm making it again!!!!!!

author
Shadowman39 (author)trollface342014-08-13

Cool, thanks for building!

author
www139 (author)2014-04-13

Here are some photos!

PIC_0130.JPGPIC_0131.JPGPIC_0132.JPGPIC_0133.JPGPIC_0134.JPGPIC_0135.JPG
author
Shadowman39 (author)www1392014-04-13

Looks nice, thanks for building!

author
www139 (author)Shadowman392014-04-13

oh thanks! it was also fun to build!!!

author
www139 (author)2014-04-12

does it work with a green motor?

author
Shadowman39 (author)www1392014-04-12

Yes, you'll just have to modify it a bit.

author
www139 (author)Shadowman392014-04-13

I did it!!!! will show a picture!

author
www139 (author)Shadowman392014-04-12

ok! thanks! I have an old battery pack motor that runs ok but it squeals a lot. Glad to hear it will work!!!!

author
Miq313 (author)2013-08-15

Is this part necessary in step 1

photo-2013-08-15 20:41.jpg
author
Shadowman39 (author)Miq3132013-08-16

No, that's just the piece counting step, so you don't have to build anything yet.

author
OZKNEX22 (author)2013-04-12

I built it worth pure genius

author
Shadowman39 (author)OZKNEX222013-04-13

Nice, thanks for building!

author
KNEX-pert (author)2011-12-25

COOOOOoooool! Awesome! You've built a great instructable!

author
Snosageman99 (author)2011-10-02

In step 2 pic4, whats the black thing underneath the black snowflake connector? (2nd from left)

author
hi452 (author)2011-07-04

I honestly had my doubts about this but I built it and it worked. Very nice job on the design.

author
Shadowman39 (author)hi4522011-07-04

Thanks!

author
albydesign (author)2011-06-08

Thats cool! 5* you deserve it! =D

author
Shadowman39 (author)albydesign2011-06-09

Thanks! :-)

author
albydesign (author)Shadowman392011-06-09

No Problem, this is ingenious! =D

author
jman1356 (author)2011-03-18

what if u dont have have the red motor i have just a blue motor can i still run it

author
Shadowman39 (author)jman13562011-03-18

Yes, you'll just have to modify the motor section a bit.

author
MegaMetal8 (author)2010-12-24

My motor (Green one) Doesn't fit :-(

author
Randomguy65 (author)MegaMetal82011-01-29

Isn't that motor too weak?

author
MegaMetal8 (author)Randomguy652011-01-30

Ive built it now, Works just as fast as his

author
Shadowman39 (author)MegaMetal82010-12-24

It should fit in a green rod space. Just change the orange connectors on the side to white, and take out the blue spacers.

author
MegaMetal8 (author)Shadowman392010-12-24

Ok

author
aleceatsfood (author)2011-01-22

1) stop it your awesomeness is going to kill me
2) sweet cat

author
Shadowman39 (author)aleceatsfood2011-01-22

Haha, thanks!

author
aleceatsfood (author)Shadowman392011-01-24

=D

author
MegaMetal8 (author)2010-12-29

Finished!

Its AMAZING

author
Shadowman39 (author)MegaMetal82010-12-29

Yay! If you post a picture, I'll put it on the last step.

author
MegaMetal8 (author)Shadowman392010-12-30

If I can find my card reader I will

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 items. I hope you enjoy!  _______________________ Current avatar ... More »
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