I came up with a large helix which can be made to be stacked on top of itself. It is made for K'nex ball machines, and only works with the original K'nex balls. This element requires quite a few pieces however, but the finished product is rather cool.

When complete, the ring measures about 27 inches in diameter and a circumference of just over 7 feet. 

If you make it, send me pictures and I'll post them on here. The picture below features this helix in my current machine, however, there is a smaller helix (with blue track) in the center of it. This tutorial is not including that helix.

Step 1: Piece count

Before you start, here is a piece count for a 1 foot section(measured by the outer track) of the helix. These are the pieces you will need:  Rods :
-Green : 10
-White : 9
-Blue : 9
-Gold Notched :  5

- Orange :  5
- Yellow :  11
-Gold Tab : 10
- Y connector : 5
- Grey one slot connector : 5

Spacers : 5
Track : 2 (It takes about 14 feet of track to complete a full circle, 7 feet on each side)

Total : 76                                                                                                                                                                              
woah great!!!
<p>can you subsitute red rods instead of those gold notched ones?</p>
Yes, you can, but the connectors might not stay in place as good as they do on the gold rods.
Cool! I subbed (I don't know why I didn't earlier :p)
Nice first Instructable! It would be cool to make one of these 8 feet tall. :-P
Someone else was planing to do a helix that big but run out of space.
Ha, nice job!

About This Instructable


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Bio: Hi, I'm Nick. On most sites (like YouTube and SSCoasters) I'm known as koolcoasterkid. I mainly build K'nex ball machines(the kind ... More »
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