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Unread 13-11-2015, 00:52
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Jack S. Jack S. is offline
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Re: pic: Butterfly Drive

Quote:
Originally Posted by Chris is me View Post
*snip* Also consider the possibility of the pivot module straddling the drive tube and using plastic slider blocks, etc. to transfer the loads placed on the module to the chassis directly.
We used this setup on our 2014 and 2014 off-season upgrade drivetrains to much success. It kept everything compact and supported, helping eliminate those pesky bending moments. We also used the same setup on our actuating perpendicular middle wheel in both 2014 and 2015.

Another thing to consider is where you place your cylinders. We were space limited in our 2014 drivetrain, so we tried mounting the cylinders directly to the top of our 2x1 side tubes. We were surprised to find that our cylinders still generated enough force to lift the entire robot off the omni wheels even at such an inefficient angle. Just a thought to maybe save you some space later.

Also, don't forget to think about your chain runs. If I'm seeing it correctly, it looks like you're wanting to run the "TexasTube" chain-in-tube style setup. If so, you might want to think about how your gussets for your center bar will attach to the side bars. Chain doesn't usually like to run when it has bolts or rivets getting in its way. Trust me, I've tried it before.
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