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  #61   Spotlight this post!  
Unread 29-06-2010, 17:29
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Re: Crazy Drive Train Ideas

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Originally Posted by Tom Ore View Post
Not sure if this link has been posted earlier in the thread but here it is:

http://www.youtube.com/watch?v=L3NGCL-efRM
You'll note the machine in the video is running on a surface that deforms under the auger-wheels. How do kinematics when the surface fails work differently than on a stable carpeted surface?
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Unread 29-06-2010, 22:15
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Re: Crazy Drive Train Ideas

Quote:
Originally Posted by Chris is me View Post
You'll note the machine in the video is running on a surface that deforms under the auger-wheels. How do kinematics when the surface fails work differently than on a stable carpeted surface?
This video seems to say it works just as well.

If any team wants to mold some enormous Archimedes screws like those, I'd bet you win some kind of technical award. Making weight would be fun though...
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Last edited by Ian Curtis : 29-06-2010 at 22:42.
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Unread 30-06-2010, 07:26
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Re: Crazy Drive Train Ideas

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Originally Posted by iCurtis View Post
This video seems to say it works just as well.

If any team wants to mold some enormous Archimedes screws like those, I'd bet you win some kind of technical award. Making weight would be fun though...
Nobody is saying you can't get a screw drive to move - just that it will be much, much more inefficient than just about anything else on terrain that isn't sand or snow.
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Unread 30-06-2010, 07:36
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Re: Crazy Drive Train Ideas

With 130+lbs on the screws good luck not damaging the carpet from driving or getting pushed around.
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Unread 30-06-2010, 16:28
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Re: Crazy Drive Train Ideas

Quote:
Originally Posted by JamesCH95 View Post
With 130+lbs on the screws good luck not damaging the carpet from driving or getting pushed around.
From the video, it looks like a rather high lead thread is required to get the speed ratios correct (fore/aft versus sideways). Maybe a multi start thread could be used to keep the lead high but provide more surface area in contact with the ground.
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Unread 30-06-2010, 16:37
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Re: Crazy Drive Train Ideas

Quote:
Originally Posted by JamesCH95 View Post
With 130+lbs on the screws good luck not damaging the carpet from driving or getting pushed around.
Maybe someone can have fun making an omni/mechanum auger. Get a big hollow drum and mount (or cut slots to hold) a ribbon of ball bearings, or of rollers, in a barber-pole spiral around the drum's outer surface.

I'm not saying it would be ideally suited for any games other than those containing the fabled FRC water hazards; but it could be fun to make. If you chose the materials carefully, you might be able to create a fun off-road machine that isn't stymied by swampy terrain, and that is also at home on FRC carpets.

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Unread 30-06-2010, 21:29
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Re: Crazy Drive Train Ideas

Quote:
Originally Posted by iCurtis View Post
This video seems to say it works just as well.

If any team wants to mold some enormous Archimedes screws like those, I'd bet you win some kind of technical award. Making weight would be fun though...
Any idea on how it would work on corn?
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Unread 11-07-2010, 23:18
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Re: Crazy Drive Train Ideas

How about this?
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Unread 12-07-2010, 06:42
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Re: Crazy Drive Train Ideas

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Originally Posted by JamesCH95 View Post
This will be my favorite robot of the day. That is totally sick. My mom walked by while i was watching it and thought it was real. I want to know what snake makes that sound though.

~DK
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Unread 14-07-2010, 20:14
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Re: Crazy Drive Train Ideas

Cam drive. Worst mobility, best entertainment quality. You can only rotate the wheels in one direction, and if the wheels are placed on out of phase, you have this crazy tumbling thing. If put on in phase, you have a sort-of robot low rider that can pounce onto objects. If put on reflected, it's like a carousel.

How cool!
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Unread 17-07-2010, 10:57
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Re: Crazy Drive Train Ideas

Haha as cool as some of these ideas are, like the snake one , i was more looking for odd wheel arrangements like the close center wheel 6 wheel that 548swimmer posted a few weeks ago. We were also planing on making a jump drive before it even came on chief delphi, stuff like that.
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Unread 17-07-2010, 13:25
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Re: Crazy Drive Train Ideas

Quote:
Originally Posted by JamesCH95 View Post
Why is the snake surrounded by a blurry aura in that video? It is using a prototype cloaking device or...

Is the video perhaps a fake?
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Unread 17-07-2010, 21:55
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Re: Crazy Drive Train Ideas

Quote:
Originally Posted by gblake View Post
Why is the snake surrounded by a blurry aura in that video? It is using a prototype cloaking device or...

Is the video perhaps a fake?
I think that's an artifact of the video compression.

I highly doubt that the video is a fake, here is the inventor's website, with all of the earlier and later versions.
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Unread 13-09-2010, 02:27
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Re: Crazy Drive Train Ideas

Gallop (Cam) Drive

(Change the phase difference for Low Rider drive!)
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Unread 13-09-2010, 19:51
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Re: Crazy Drive Train Ideas

I always wanted to see a big-wheel robot.
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