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Re: help with 6wd chassie..
Exactly. We had a similar setup this year, and had an additional sprocket directly under the gearbox, so the chain went through kind of an S-bend, kind of like the whachamacalit on the back of a bicycle.
More chainwrap is a good idea because it prevents chain slippage. It may seem dead tight while stationary, but chains can do amazing (bad) things under power, and it could theoretically get ripped right off the sprocket. Having more teeth in contact with the chain can help this. Therefore, especially with smallish sprockets like those on the gearboxes, 120 degrees of wrap is generally a good idea (less is sometimes ok on an idler though)
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FIRST is not about doing what you can with what you know. It is about doing what you thought impossible, with what you were inspired to become.
2007-2010: Student, FRC 1687, Highlander Robotics
2012-2014: Technical Mentor, FRC 1687, Highlander Robotics
2015-2016: Lead Mentor, FRC 5400, Team WARP
2016-???: Volunteer and freelance mentor-for-hire
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