This lift is a copy of the one I used in Wipe Out, except it's shorter, it uses a battery-powered motor instead of an electric one, and the tracks going in and out of the tower are different. It can be built with only one spiral, but the bottom where the balls come in might have to be changed. A cool thing about this lift is that the platform and shaft can be on any side of the tower because the double helix is in the center. It's also easy to modify.
This is my first Instructable, and it took me a long time to make because the pictures took a very long time to upload.
Here's all the pieces you'll need to build the double helix lift:
RC Tubing- 2 pieces, each 3 feet, 5 1/2 inches long
Black Y Clip-17
Small Tan (or Blue) Gear-4
Large Yellow Gear-1
RC Tubing Splicer-2
Grand Total: 675 pieces
If you have all these pieces, let's get building!
I hope you like it!
Here's a video of the lift in action:
Click here to view the original double helix lift, used in Wipe Out:
Step 1: The Double Helix, Part 1
Step 2: The Double Helix, Part 2
You are now done building the double helix; set it to the side and start building the base.
Step 3: The Base, Part 1
Step 4: The Base, Part 2
Step 5: The Base, Part 3
Step 6: The Base, Part 4
Step 7: Connecting Parts 1-4 of the Base
Now that you've finished the base, it's time to move on to the bottom of the tower.
Step 8: The Bottom of the Tower
Step 9: Connecting the Bottom to the Base
After you're done with all that, it's time to build the tower.
Step 10: The Tower, Part 1
Step 11: The Tower, Part 2
Step 12: Connecting Parts 1 and 2 of the Tower
Step 13: Connecting the Tower to the Bottom
Step 14: The Top, Part 1
Step 15: The Top, Part 2
Step 16: Inserting the Double Helix
Step 17: Connecting the Top Onto the Tower
Step 18: Finished!
Just add balls and turn on the motor, and you're ready to roll (well, the balls are, anyway).
If you have any questions, feel free to ask!