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Unread 12-06-2013, 17:48
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Re: Sheet Metal Drivetrain Prototype

FOS=Factor of Saftey. Basically, chain working strength is less than spec sheets say, due to the master links.

You can do a direct drive and slow the top speed down using another stage of gearing. A good way to set this up with the ball shifters is to split this final reduction between the gearbox and the chassis, with the driven gear cantilevered off the wheel's shaft, remaining with the chassis when the gearbox is removed.

Also, it's certainty possible to keep the non-unique inner and outer rails and do direct drive, 228's S rail is only one way to do this. PM me your email and I can send you our CAD from this past year which did this.

With 0.1" aluminum, you can definitely get away with way more aggressive lightening. The hexagonal pattern on 2168's chassis is a great way to do this.
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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
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