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Unread 22-04-2014, 19:16
Oblarg Oblarg is offline
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pic: Offseason Drive Idea, Refined

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Unread 22-04-2014, 19:20
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Re: pic: Offseason Drive Idea, Refined

Definitely take the time and meticulously draw out the shafts and whatever spacing system you will use. All the correct hardware and tolerances. You (or whoever assembles it) will kick you in the butt when it comes together and there are issues with spacing. Looks good otherwise!

Tip: When you go to rivet it put the shafts and the bearings in first. This will ensure that you do not have alignment issues with your rigid frame
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Unread 22-04-2014, 21:20
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Re: pic: Offseason Drive Idea, Refined

Quote:
Originally Posted by MarkoRamius1086 View Post
Definitely take the time and meticulously draw out the shafts and whatever spacing system you will use. All the correct hardware and tolerances. You (or whoever assembles it) will kick you in the butt when it comes together and there are issues with spacing. Looks good otherwise!
Already done; spacing uses the stock VexPro delrin hex spacers with a bit of wiggle room added in the gusset spacing.

Quote:
Tip: When you go to rivet it put the shafts and the bearings in first. This will ensure that you do not have alignment issues with your rigid frame
Will do.
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Unread 22-04-2014, 21:38
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Re: pic: Offseason Drive Idea, Refined

I cannot see how close to the frame perimeter the motors are, but I would be wary of the wires coming out of the back of the CIMs getting damaged by another robot ramming you. Other than that it looks really solid. Nice work!
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Unread 22-04-2014, 22:01
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Re: pic: Offseason Drive Idea, Refined

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Originally Posted by PingPongPerson View Post
I cannot see how close to the frame perimeter the motors are, but I would be wary of the wires coming out of the back of the CIMs getting damaged by another robot ramming you. Other than that it looks really solid. Nice work!
I'd have to double-check the CAD, but I believe there's about a half inch of clearance.

I might move them in a bit anyway to allow for wider wheels.
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Unread 22-04-2014, 22:18
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Re: pic: Offseason Drive Idea, Refined

It seems like your kind of converging on what 971 does, except with tubing instead of sheetmetal. They have their CIMs over their wheels, but also actually make the output of their gearbox a gear that connects to a gear on their center wheel, but externally to their gearbox. That way, they can take the gearbox off without taking the center wheel out, or take any belts off.
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Unread 22-04-2014, 22:27
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Re: pic: Offseason Drive Idea, Refined

Here are a couple more pics, if anyone's interested.

View from bottom, with transparent tube to show shaft coupling:

http://imgur.com/G6Z9AdW

View of whole chassis from top:

http://imgur.com/dGeCOPH
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