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-   -   Crazy Drive Train Ideas (http://www.chiefdelphi.com/forums/showthread.php?t=86059)

Chris is me 29-06-2010 17:29

Re: Crazy Drive Train Ideas
 
Quote:

Originally Posted by Tom Ore (Post 967897)
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?

Ian Curtis 29-06-2010 22:15

Re: Crazy Drive Train Ideas
 
Quote:

Originally Posted by Chris is me (Post 967898)
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... :p

Jared Russell 30-06-2010 07:26

Re: Crazy Drive Train Ideas
 
Quote:

Originally Posted by iCurtis (Post 967914)
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... :p

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.

JamesCH95 30-06-2010 07:36

Re: Crazy Drive Train Ideas
 
With 130+lbs on the screws good luck not damaging the carpet from driving or getting pushed around.

Tom Ore 30-06-2010 16:28

Re: Crazy Drive Train Ideas
 
Quote:

Originally Posted by JamesCH95 (Post 967935)
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.

gblake 30-06-2010 16:37

Re: Crazy Drive Train Ideas
 
Quote:

Originally Posted by JamesCH95 (Post 967935)
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.

Blake

Bjenks548 30-06-2010 21:29

Re: Crazy Drive Train Ideas
 
Quote:

Originally Posted by iCurtis (Post 967914)
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... :p

Any idea on how it would work on corn?

JamesCH95 11-07-2010 23:18

Re: Crazy Drive Train Ideas
 
How about this?

DinerKid 12-07-2010 06:42

Re: Crazy Drive Train Ideas
 
Quote:

Originally Posted by JamesCH95 (Post 968771)

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

penguinfrk 14-07-2010 20:14

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!

Bjenks548 17-07-2010 10:57

Re: Crazy Drive Train Ideas
 
Haha as cool as some of these ideas are, like the snake one :yikes: , 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.

gblake 17-07-2010 13:25

Re: Crazy Drive Train Ideas
 
Quote:

Originally Posted by JamesCH95 (Post 968771)

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?

JamesCH95 17-07-2010 21:55

Re: Crazy Drive Train Ideas
 
Quote:

Originally Posted by gblake (Post 969206)
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.

penguinfrk 13-09-2010 02:27

Re: Crazy Drive Train Ideas
 
Gallop (Cam) Drive

(Change the phase difference for Low Rider drive!)

Katie_UPS 13-09-2010 19:51

Re: Crazy Drive Train Ideas
 
I always wanted to see a big-wheel robot. :P


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