Difference between revisions of "Sumo Bots"

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(Undo (most of) revision 23982 by Knittingfrenzy18 (talk))
(okay just cleaning up the info this time around. spoiling out the driver section because of mandatory autonomousness. also removing gh's broken links.)
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'''Sumo Bots''' is a building event which was run in the C division in 2011, and is being run as a trial event for the B division in 2013. The event consists of building a robot which is able to push another team's robot out of a designated area. In 2013, the robots must autonomously operate.  
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'''Sumo Bots''' is a building event which was run in the C division in 2011, and is being run as a trial event for the B division in 2013. The event consists of building a robot which is able to push another team's robot out of a designated area. In 2013, the robots must autonomously operate.
  
 
==The Robot==
 
==The Robot==
There are lots of ways to build your robot, you can use vex or some other sort of kit, strap things onto an RC car, or custom build a robot from parts you attain yourself and are not part of a kit.  The method that has had by far the most success is the custom built robot as it allows you to put as much motor and wheel into the maximum space and weight without being constrained by a kit or likely underpowered RC car.
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There are lots of ways to build your robot. You could use VEX or some other sort of kit, strap things onto an RC car, or custom build a robot from parts you attain yourself and are not part of a kit.  The method that has had by far the most success is the custom built robot as it allows you to put as much motor and wheel into the maximum space and weight without being constrained by a kit or likely under-powered RC car.
  
 
===The Price===
 
===The Price===
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====The Wedge====
 
====The Wedge====
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The wedge design is basically a robot that is shaped like a wedge. This way, when the wedge approaches its enemy bot, it can either charge and scoop the other bot right off the competition floor, or, if the other bot tries to charge, it will travel straight up the wedge, and most of the time, fall over.
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There are a lot more variations on the wedge that make different designs more or less competitive, however, beyond making the scoop lower, sharper, and more steep (all of which are obvious though important), but they'll come to you more easily by intuition and experience than by reading about it here.
 
There are a lot more variations on the wedge that make different designs more or less competitive, however, beyond making the scoop lower, sharper, and more steep (all of which are obvious though important), but they'll come to you more easily by intuition and experience than by reading about it here.
  
 
====The Ram====
 
====The Ram====
Not an ideal design as even a bad wedge can probably beat it unless you are able to out maneuver the wedge and hit it on a non wedged side.  
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Not an ideal design, since even a bad wedge can probably beat it, unless you are able to out maneuver the wedge and hit it on a non wedged side.
  
 
====The Wheels====
 
====The Wheels====
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It goes without saying that you want the most powerful motors you can get that are legal under the rules.
 
It goes without saying that you want the most powerful motors you can get that are legal under the rules.
  
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<spoiler>
 
==The Driver==
 
==The Driver==
 
More then any other event, it is key that the person operating the Sumobot has spent lots of time with the Sumobot and is a skilled operator capable of thinking on their feet so they can react to whatever their opponent throws at them.  You can have a Sumo bot capable of knocking a person out of the ring and you aren't gonna win anything unless you have a driver who knows what they're doing.
 
More then any other event, it is key that the person operating the Sumobot has spent lots of time with the Sumobot and is a skilled operator capable of thinking on their feet so they can react to whatever their opponent throws at them.  You can have a Sumo bot capable of knocking a person out of the ring and you aren't gonna win anything unless you have a driver who knows what they're doing.
 
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</spoiler>
==Links==
 
gh's site has in depth information on his sumo bots [http://www.geekshavefeelings.com/projects/la-cucaracha-sumo-bots-2007| La Cucaracha] and [http://www.geekshavefeelings.com/projects/harpy-sumo-bots-2009| Harpy]
 
 
 
 
[http://scioly.org/phpBB3/gallery/album.php?album_id=7|Sumo Bots Image Gallery]
 
[http://scioly.org/phpBB3/gallery/album.php?album_id=7|Sumo Bots Image Gallery]

Revision as of 19:18, 14 January 2013


Sumo Bots is a building event which was run in the C division in 2011, and is being run as a trial event for the B division in 2013. The event consists of building a robot which is able to push another team's robot out of a designated area. In 2013, the robots must autonomously operate.

The Robot

There are lots of ways to build your robot. You could use VEX or some other sort of kit, strap things onto an RC car, or custom build a robot from parts you attain yourself and are not part of a kit. The method that has had by far the most success is the custom built robot as it allows you to put as much motor and wheel into the maximum space and weight without being constrained by a kit or likely under-powered RC car.

The Price

Under the trial event rules Sumo Bots is a bit of a battle of the wallets as most of the components to building a good robot cost a lot. If you can salvage parts such as wheels and motors from old robots or RC cars and the like you may be able to reduce this cost a bit. Hopefully when the event becomes an event the national committee will make some changes to the maximum size and weight of the bots so as to make the event less dependent on money and more dependent on who has the best design and who is the best driver.

The Design

There are lots of different design possibilities, especially if you're custom building your Sumobot, but by far the most popular design is the wedge.

The Wedge

The wedge design is basically a robot that is shaped like a wedge. This way, when the wedge approaches its enemy bot, it can either charge and scoop the other bot right off the competition floor, or, if the other bot tries to charge, it will travel straight up the wedge, and most of the time, fall over.

There are a lot more variations on the wedge that make different designs more or less competitive, however, beyond making the scoop lower, sharper, and more steep (all of which are obvious though important), but they'll come to you more easily by intuition and experience than by reading about it here.

The Ram

Not an ideal design, since even a bad wedge can probably beat it, unless you are able to out maneuver the wedge and hit it on a non wedged side.

The Wheels

More wheels mean that less weight rests on the scoop. The scoop does not contribute to pushing power, so weight resting on it is weight wasted. Having more wheels generally means that you will have wheel slip when turning. This happens when the wheel isn't pointing in the same direction as its motion, such as in a four wheeled robot turning about its center. All wheels are pointed forward or backwards, but their direction of travel is tangent to circles centered at the turning point.Either will contribute to significant loss of pushing force; the first for obvious reasons and the second because it will cause the wheel and the ground to engage in kinetic friction instead of the static friction of a wheel rolling on the ground.

The Motors

It goes without saying that you want the most powerful motors you can get that are legal under the rules.

<spoiler>

The Driver

More then any other event, it is key that the person operating the Sumobot has spent lots of time with the Sumobot and is a skilled operator capable of thinking on their feet so they can react to whatever their opponent throws at them. You can have a Sumo bot capable of knocking a person out of the ring and you aren't gonna win anything unless you have a driver who knows what they're doing. </spoiler>

Bots Image Gallery