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#1
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Re: A New Drivetrain
I would not worry about coupling each sides' CIMs together for tank mode, it would save you a pound or two right there
![]() While the chassis design is heavy, it hasn't been lightened yet like you said. You were planning on making it from folded sheet metal? What lead you to that decision? |
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#2
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Re: A New Drivetrain
Quietly someone somewhere is screaming "NOOOOOOOOOOOO" as the next potential iteration of Nonadrive has now been leaked
![]() In all seriousness, from what I can piece together this seems somewhat practical. I'm having difficulty piecing it all together, thus perhaps I can offer a holistic analysis. I would look at the weight and manufacturing issues from a tradeoff perspective:
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#3
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Re: A New Drivetrain
Looks interesting. I have trouble visualizing this kind of thing with just line sketches in Paint, but I like the idea and I'll look into it some more when I'm not on a tiny netbook
If you make some pretty CAD of any parts, I'd love to see it. |
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#4
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Re: A New Drivetrain
Quote:
Concerning the pods sheetmetal design: the fundamental and key design tradeoff with the pod is between making the traction and mec wheels in the pods as far apart as possible (so as to decrease the amount the pods need to turn to get to the mec mode) and leaving room in the for other stuff between the pods. Because sheetmetal is so thin, it allowed me get support on both sides of the wheels in the pod while still keeping the wheels as close to the outside as possible. |
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#5
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Re: A New Drivetrain
Sounds like good reasoning to me.
You might want to consider a single beam for each pod with a wheel cantilevered off of each side on a dead axle. Possibly with the dead-axle welded in place. Some 1" square steel tube or 1.5" square aluminum tube might do the job. Just a thought... |
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#6
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Re: A New Drivetrain
This may help you get the picture. These two pics are from a 50% scale model made out of yes, legos. They should help you get the idea if the paint docs are giving you trouble.
Last edited by BJC : 03-08-2010 at 16:42. |
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#7
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Re: A New Drivetrain
I like it, good thinking. As soon as I saw nonadrive, I expected the Mechanum pod idea to come up with a bunch of teams. Next season should be interesting
. The dead stop is also a useful feature, but usually only in certain games.As for CAD you can run... If you haven't heard of sketchup, it is an okay stop gap when you can't get decent CAD to work on your computer. |
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#8
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Re: A New Drivetrain
Quote:
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#9
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Re: A New Drivetrain
Using Sketchup I was finally able to finish what I started.
and yes, there's no chains, gearboxes, and you get circles instead of wheels but those would taken way way longer to make from scratch then I wanted to devote to finishing this. Overall though, pretty good for a first try I think (at both designing a chassis and sketchup). Comments and opinions are welcome. |
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