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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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And those cams were invented for that kind of bearing block. ;) |
Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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EDIT. Andrew beat me to it. |
Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
Are CIMs glossy or am I clinically insane... :confused:
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
Nice drivetrain! Very clean, looks good. A few questions, if you don't mind:
1. What is the weight with what is shown in the picture? 2. What size wheels are those? Are they custom or COTS? Tread? 3. What is the thickness of the 2x1 and the bellypan? 4. How are you planning on tensioning? 5. Are those gearboxes mounted directly to the 2x1 or via standoffs? If it's the latter, change it to the former. A small recommendation: Make sure the gearboxes shown have the same mounting hole pattern as either the Vex or WCP gearboxes, just in case. Or both even. |
Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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2. 4in, custom, they will be 70a Polyurethane 3. 1/8th and 1/8th 4. In thread 5. The front plate mounts directly, it's already setup for Vexpro IIRC |
Re: pic: CV Robotics WCD 6wd Drivebase Prototype
I just updated the mass properties, and it gave me approximately 40lbs. I'll edit this post if I find any mistakes in the settings.
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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Sometimes all it takes is the right technique. (also CIMs are Gloss black paint, just not as glossy as that render, and the end caps are tumble finish) -Aren |
Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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Re: pic: CV Robotics WCD 6wd Drivebase Prototype
I really like this approach to bumpers and mounting. For a pre-season prototype the most significant advantage of it I see is the ability to change wheel size without re-designing things for ground clearance or field obstacles. This should allow for some fast Day 0 answers.
Personally I'd adjust only one thing about the bumper system, and that would be to add a "wall" (like half of a 3"x1.5" C-channel, probably only 1" length) at the very center of the front & rear rails in order to give the upper part of the bumper some support against hard collisions. As it stands, it seems like the bumper would flex a lot if hit in the middle by a team whose bumpers were not at the lowest possible point of the bumper zone. |
Re: pic: CV Robotics WCD 6wd Drivebase Prototype
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Warning you now, do not try to do bearing holes or gearboxes with the plasma cutter. You could do a solid 1/16 Al bellypan, if you just use it to make ziptie holes for your electronics. Think of the plasma cutter to be just more precise than a bandsaw, that can also do pockets. If you have access to a manual mill, that should get you most of what you need for a WCD. |
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