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Re: helix
If you have any, try using the pnuematic tubing that comes in FRC kit, it works great, and once balls get to the top of your helix, they bend so your helix-tube can keep rotating.
this worked great for out 2009 lunacy robot,
ps. If you need them to be stifffer, just shove zip-ties inside the pnuematic tubes.
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Adam Spears
Team 1557 2007-2011 student-Lake County FL
Current Team 4639 mentor- Houston TX
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