This is a fun little ball machine I came up with a while ago. All one track. Its got an interesting lift, banked turns, and balls never fall off. I have left it on for over an hour without a single ball falling off or other malfunction.
So if you like it, go build it! I warn you though, its a long build, and the instructions are designed more for an experienced builder, so if you've just started with Knex, I'd suggest coming back to this one later.
Thanks, and enjoy!
Step 1: Parts List
Green - 137
White - 48
Blue - 580
Yellow - 179
Red - 11
Flexi (yellow length) - 8
Dark Grey - 9
Light Grey - 9
Red - 114
Green - 19
Yellow - 38
White - 12
Blue (3d) - 96
Purple (3d) - 392
Orange (tracking pieces) - 93
Blue Spacers - 24
Silver Spacers - 6
Hinges - 1 (if you do use the optional mod, see step 16.)
Tan Clip - 14
Y Connector - 17
Chain links - 38
Some tubing. If you have a set that comes with tubing, you should have enough.
Some tube splicers - at least two, more if your tubing is in shorter lengths.
Grab a cup of coffee, some biccys, put on your favourite music and get rollin'!
Step 2: Lift Area
1-3: Build this panel
4: Build this panel. Same top and bottom as the other one
5: Put them together. All connections are obvious
Step 3: Gears and Whatnot
1: Your gonna make these three gear bits
2: The one on the right,
3: The one in the middle...
4: The one on the left
5: Snap the middle one into the frame
6: Slide in the one on the right
7: And add the middle on in where shown
8-12: Build this motor gearing thingy. Should be easy. Just wrap the cord around the motor or whatever in a way that does not interfere with the gears.
13: Snap it into the frame there
14: Close up of the connection
Step 4: Finishing the Lift
1: Make these two pieces
2-4: Make this thing
5: Slide "this thing" into the top of the lift like so
6-9: Add in the two long panel-ish things on either side
10: Make the chain
11-13: Put the chain on
Step 5: Tracking #1
1: Build this part. Remember the blue rods
2-5: Build this tracking piece
6-9: Build this chunk
10: Attach the top tracking to the base, and add on the odd end piece to the larger track portion
11-13: Connect to the lift system. All connections should be simple.
Step 6: Track #2
1-2: Build this bit
3: And this panel
4: Put thems together
5-8: Make this tracking piece
9-10: Add it on top of that chunk you just made
Step 7: Track #3
1-2: Build this bit
3: And build this one too
4: Connect thems
5: Attach as shown to track piece #2 as shown
Step 8: Track #4
1: Build it
2-5: Also build
6: Build this warpy bit
7: Add this into the chunk you just made
8: And add the bottom. Should look like this now
9-12: Attach it up to the main lift part. All major connections shown
Step 9: Track #5
1: Build this track piece
2: And this base piece
3: Put them together
4: MOD TIME. I made a mistake. Look at that piece I am pointing to.
5: Disconnect the purple with three blues off of the piece I was pointing to, and then rotate the circled purple like so.
6: Put that purple back in as shown. You will need to remove one blue rod from it. Should look like this.
7: Now attach this piece to the main body of the machine as shown
Sorry about that little blunder there folks. Moving on...
Step 10: Track #6
1-5: Big-ole' track piece. Go for it
6-8: The base for that ole' track piece
9: Put them together
10-12: Connect it up to the main part we've been working on
Step 11: Track #7
1-5: All photos of this one track piece. Do it.
Step 12: Track #8
1: Build this turn
2-5: Build this guy
6: Connect the two
7: Close up
8: Slap on that long windey piece on top
Step 13: Lets Make Some Connections
1: Line it up like so
2-7: Make some connections
Step 14: Yellow It Up
Step 15: Lets Go Tubing
So lets do this. Start at the top of the lift. Snap in the tubing so that the end is roughly lined up with the end of the first orange connector. Then go. Once you get to the bottom of the lift, push any excess tubing under the chain and wrap it up underneath however you want.
Once you are done, take care to push all the orange track pieces out on the blue rods - they tend to slide into the middle whilst you are putting the tracking on.
Step 16: An Optional Modification
Step 17: All Done. Go Nuts.
Just like to say thank you for viewing my instructable. And if you're looking at this page, you probably built it too, so thank you! If you built it, and/or have any questions or comments, please feel free to ask.