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Unread 03-11-2014, 11:47
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Re: pic: Team 3572 Chassis Project

Quote:
Originally Posted by Travis Schuh View Post
What is your belt wrap for the stage off of your CIMs going to look like? If that is one belt tangent to the outside of all 3 pulleys, then I would question if you have enough belt wrap on the driven pulley in that arrangement.
Oh, I didn't even consider he might be thinking this, don't do it! You want a very minimum of six teeth in total mesh and at least 60 degrees of belt wrap. I am pretty sure we had a bit more of both of those on our drive this year and even under extreme tension they would still ratchet. If you need a wider pulley I suggest http://www.vexrobotics.com/htdversapulley.html you can add slices to increase with width.
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