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Re: pic: Bit Buckets 2015 Offseason Drivetrain
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
Very nice. Our team has had laser cut chassis for the past two years, but they are nowhere near as modular as yours.
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
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Do you guys have any experience with wood gearboxes or bearing press fits? We're trying them on this robot but won't have much time to test them before build season. |
Re: pic: Bit Buckets 2015 Offseason Drivetrain
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Is your chassis held together entirely with T-slots? We thought those would not be strong enough, so we use wood glue for everything. It probably helps that you are using 1/4" plywood, rather than 3/16". |
Re: pic: Bit Buckets 2015 Offseason Drivetrain
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Press fits in metal are pretty precise. 0.001" smaller than the bearing is a light/ medium fit, whereas 0.002" is a heavy press fit, for the usual FRC bearings. Wood would be more forgiving on the size. |
Re: pic: Bit Buckets 2015 Offseason Drivetrain
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Re: pic: Bit Buckets 2015 Offseason Drivetrain
![]() Here's the next version of the drivetrain. It maintains the same general design as the last iteration, but the CAD model has been completely redone. It is now better organized and entirely equation driven- the length, width, height and other properties can all be adjusted by changing numbers in a text file. This model is not intended to be cut out as-is. It's intended as a base that a team can quickly and easily adapt to any game, changing the size, wheels, gearbox or anything else. As such, the gearbox mounting, which is intended as an example, is not equation-driven and the model includes no lightening or access holes, wheels or axles. The electronics layout is also not a final design - it is simply a demonstration of how SolidWorks' blocks can be used to quickly draw an electronics board. ![]() The gearbox included in the model is a repackaged Vex Pro Ball Shifter. Its only custom parts are the 4 wooden enclosure pieces. SolidWorks files are available on GrabCAD here. Look in the folder "2015 Offseason Drivetrain v2 Upload". |
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