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Wheel Leg All terrain design Answered

I came up with a wheel leg design a while ago http://us.mindstorms.lego.com/nxtlog/myprojectdisplay.aspx?id=d5808c2d-b658-4b8e-b0f2-06c6152a2f66. Vex came up with this product and it looks a lot like my design. I think this would be a great design for an mars rover. I got the idea from rex robots. I thought, " Why not put more of those on?"

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kelseymh (author)2008-12-27

For Mars rovers, there are two main issues (read through the ~weekly logs of the Spirit and Opportunity missions): running into rocks, and getting caught in sand. These spoke-wheels look like they'd handle rocks okay, levering up and over. But what will they do on fine sand or dust?

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LinuxH4x0r (author)kelseymh2008-12-27

turn them around and they'd work fine

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kelseymh (author)LinuxH4x0r2008-12-27

It's not obvious to me (from the posted image) that these spoke-wheels could handle fine sand. It seem to me that they would simply slice through (think of a fork going through flour), rather than making forward progress. I'm sure that I'm being simplistic, but that means making a prototype and testing it in a sand tray.

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LinuxH4x0r (author)kelseymh2008-12-27

Of course, I was thinking of a wider version.

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Kiteman (author)starwing1232008-12-28

What people are talking about are whegs - a combination of wheel and leg.

They seem quite capable of crossing many terrains (check youtube for examples).

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starwing123 (author)Kiteman2008-12-28

Yes, that's what we're talking about, I never realized they were called whegs. They do have amazing all terrain capabilities. I would imagine some pop out objects to make them wider and would be an amphibious vehicle.

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