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Author Topic: The Loper ( awesome wheel design)  (Read 4422 times)

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Offline HydrogenTopic starter

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The Loper ( awesome wheel design)
« on: June 18, 2009, 10:34:44 PM »
Great wheel concept I found while surfing the Tube


[youtube]hiqsE3PtG9M[/youtube]
« Last Edit: June 18, 2009, 10:37:24 PM by Hydrogen »

Offline RoboManiacz

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Re: The Loper ( awesome wheel design)
« Reply #1 on: June 19, 2009, 12:24:45 PM »
Very nice concept for offroad stuff, but sucks that it is so slow. Makes it unusable for normal surfaces :(

Offline Ro-Bot-X

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Re: The Loper ( awesome wheel design)
« Reply #2 on: June 19, 2009, 03:41:21 PM »
I have played with Lego 3 star wheels and they work fine going straight but it's so hard to turn. This design has the wheels at the tip of the triangle fixed in place and acts more like legs than wheels, but still it's hard to turn.
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Offline HyperNerd

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Re: The Loper ( awesome wheel design)
« Reply #3 on: July 19, 2009, 02:50:46 PM »
I remember the lego spybots a couple of years back. The blue one had these wheels!
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Offline Joker94

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Re: The Loper ( awesome wheel design)
« Reply #4 on: July 21, 2009, 06:00:39 AM »
the wheels looked as if they were bending a substantual amount. But the over all design is pretty cool ;D

Offline SmAsH

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Re: The Loper ( awesome wheel design)
« Reply #5 on: July 21, 2009, 06:17:41 AM »
thats part of the design, not stress if thats what you were thinking?
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Offline Joker94

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Re: The Loper ( awesome wheel design)
« Reply #6 on: July 22, 2009, 05:24:52 AM »
oh, got you thanks smash. ;D

Offline sonictj

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Re: The Loper ( awesome wheel design)
« Reply #7 on: July 25, 2009, 11:48:02 PM »
My group's RC robot for school had a similar design.  It used what we called daisy wheels in order to traverse 2x4 obstacles.  The robot had to take a load of ping pong balls and dispense them in a bucket.  The design was great, because it was very simple.  I just had to ram the bot's ping pong hopper into the scdoring bucket to dispense the balls.  The problem was that we were told the bucket would be affixed to the floor.  At the competition they changed the rules to where moving the bucket was a 30 second penalty.  Without the penalty we would have gotten second.

[youtube]J0VpVLMELjE[/youtube]
« Last Edit: July 25, 2009, 11:49:38 PM by sonictj »

Offline Admin

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Re: The Loper ( awesome wheel design)
« Reply #8 on: July 28, 2009, 12:33:48 PM »
That bobbing motion is a large waste of energy, and converts to damaging vibration in the robot at high speeds.

My carpet monkey robot does the same thing, but uses springs to smooth out the bumping, while storing energy, and has hooks to climb stuff ;D

Offline wil.hamilton

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Re: The Loper ( awesome wheel design)
« Reply #9 on: July 28, 2009, 08:24:14 PM »
reminds me of rhex, although not nearly as effective.
for those of you who haven't seen rhex, here's a link: http://www.bostondynamics.com/robot_rhex.html
use the google.  it's your friend.

Offline jamort

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Re: The Loper ( awesome wheel design)
« Reply #10 on: July 28, 2009, 11:08:04 PM »
tracks can achieve the same thing more efficienly and faster... Though this is a cool looking design I dont think it serves its puspose quite as good as it should...
my english teacher once said, "dont talk about what you dont know in public...."

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Offline Admin

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Re: The Loper ( awesome wheel design)
« Reply #11 on: July 29, 2009, 07:28:47 AM »
tracks can achieve the same thing more efficienly and faster... Though this is a cool looking design I dont think it serves its puspose quite as good as it should...
Actually, tracks are the least efficient of any design ;D


Rhex is more efficient than the Loper, but the legs have to do a lot of stop/start motions and has structural tuning problems (it badly bounces on hard surfaces).

I've seen quite a lot of Loper type robot wheels - remember whegs? :P

Offline jamort

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Re: The Loper ( awesome wheel design)
« Reply #12 on: July 29, 2009, 11:03:33 AM »
wow didnt know that actually...       
my english teacher once said, "dont talk about what you dont know in public...."

so I replied the truth, " Exactly why I dont ever talk about English."

Offline ericthered

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Re: The Loper ( awesome wheel design)
« Reply #13 on: July 29, 2009, 09:33:39 PM »
Seems to have problems with precision steering. If there maybe a second driving system that could quickly be activated for turning such as have soleinoids push up the lopers wheels and have four regular foam wheels for fast streering and driving on flat surfaces that could make the system better suited for higher speeds

Offline jamort

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Re: The Loper ( awesome wheel design)
« Reply #14 on: July 29, 2009, 09:49:19 PM »
the problem with steering is just as in walking bots which this is basically but a little different
my english teacher once said, "dont talk about what you dont know in public...."

so I replied the truth, " Exactly why I dont ever talk about English."

Offline ladythug

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Re: The Loper ( awesome wheel design)
« Reply #15 on: August 07, 2010, 10:27:08 AM »
hey! i have a question about loper robot? we will doing loper robot as our thesis project..then we will be having a title defense first..do u have documentations or any thing that we can browse for us to have an idea how will start it.. i hope u dont mind ..tnx a head..hope u will reply..godbless!

 


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