Quote:
Originally Posted by Lostmage333
My only concern is the way you're mounting your modules. If you get a sold hit from the side, while your wheels are pointed forwards, the load on the shafts are INSANE (you have done crab for 4+ years, you know this =P). If that is a solid block of aluminum (eek! heavy) I'm sure it would be able to hold up. However, no matter how you attach that block to your frame, that will be the weak point. The 1/8" wall of the 2" x 1" box it's attached to does not seem like it would be able to withstand such loads (especially at the points where it's connected). If you use rivets, it's very likely (guaranteed) that they will fail. Maybe consider trying to add support on both sides of your mounting block.
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I've done this very method of support on a heavier crab, and it held up fine. So the upper pivot block style mounting ought to be the least of the issues. The pivot block is a solid block (1 inch tall, actually...), and really isn't that heavy. I believe it's approx. .8lbs for each mounting block, which brings the weight of each module up to a whopping 4 pounds. Woo.
Quote:
Originally Posted by sdcantrell56
What happens if you need to climb something?
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Then the outer chassis would be modified, probably to something akin to the robotnauts frame style, with open(ish) corners.
Quote:
Originally Posted by Hachiban VIII
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Wow, you're good. Except my designs aren't influenced by James' designs, only the pink bearings are artifacts of his (and they've sort of become my trademark...).
Quote:
Originally Posted by Alex469
Looks good! - The only concerning part of the design is the cantilevered mounts. They will be taking the entire load of the weight and the twisting forces from direction change.
Nice renderings - I prefer this style because the details are clean and the design easy to recognize.
-Alex
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See above response for the cantilevered mounts. They're really not an issue, I've worked on a crab that uses the same method. It's still driving, and it was used in 05.
As for the rendering style, I LOVE the illustration style. A CAD shouldn't look "real" anyway, so it's better to make it easy to see and understand.
Quote:
Originally Posted by matt.winkler
So is there an estimated cost for this top secret item? I need to know how much cash to bring with me!
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Actually, if your team wants some help designing a similar crab, I'm debating licensing the CAD under creative commons, with a few personal requests. If you make it, please tell me how it went, and tell me what changes you made. But hey, I have yet to decide that... PM me if you're interested in this aspect.
Quote:
Originally Posted by Aren_Hill
what motors will you have setup turning this beast?
i love the nice wide tires, and the gearboxes look great
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The wheels are 2 inches wide. This beast (I like that name, this might need to be called the beastcrab) will be steered by a globe or three. If that's not in the kit next season, then expect to see a Van Door steered system, or something else with High torque.
Oh, and in case people didn't get it, this is my design. I wanted to see what would happen if it were posted under someone else (someone famed as part of the legendary robonauts, too).
Feel free to respond or PM me if you have any specific questions about the design.