Difference between revisions of "Sumo Bots"

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{{EventLinksBox
 
{{EventLinksBox
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|2009thread=[http://scioly.org/phpBB3/viewtopic.php?f=16&t=204 2009]
 
|2009thread=[http://scioly.org/phpBB3/viewtopic.php?f=16&t=204 2009]
|2010gallery=[http://gallery.scioly.org/categories.php?cat_id=72 2010]
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|2010gallery=[http://scioly.org/phpBB3/gallery/album.php?album_id=7 Image Gallery]
 
|2010thread=[http://scioly.org/phpBB3/viewtopic.php?f=66&t=1428 2010]
 
|2010thread=[http://scioly.org/phpBB3/viewtopic.php?f=66&t=1428 2010]
 
|2010bestof=[[The_Best_of_2010#Sumo_Bots| 2010]]
 
|2010bestof=[[The_Best_of_2010#Sumo_Bots| 2010]]
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|2011thread=[http://scioly.org/phpBB3/viewtopic.php?f=91&t=2196 2011]
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|2011bestof=You've found an easter egg
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'''Sumo Bots''' is a building event which was run in [[Division C]] in 2011, and was scheduled to be run as a trial event for [[Division B]] at the [[University of Nebraska 2015|2015 National Competition]]. The event consists of building a robot which is able to push another team's robot out of a designated area.
  
Sumo Bots is a 2010 national trial event which will become an event for C division in 2011. The event consists of building a robot which is able to push another team robot out of a designated area.
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==Building the Robot==
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There are many ways to build the robot. [[Vex Kits]] or a similar building kit can be used, as well as a custom-built robot from parts attained on one's own. The method that has had by far the most success is the custom-built robot, since the size of the motor and the wheel configuration can be altered without being constrained by the parts in a kit.
  
==The Robot==
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===Price===
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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Under the trial event rules, Sumo Bots is a battle of the wallets, in a sense, since most of the components needed to build a good robot can cost a lot of money. If it is possible to salvage parts such as wheels and motors from old robots or RC cars and the like, this cost may be reduced a bit.
  
===The Price===
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===Designs===
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.
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There are many different design possibilities for Sumo Bots.
  
===The Design===
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====The Wedge====
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.
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The wedge, which is essentially a robot that is shaped like a wedge, is the most popular design. Under this design, 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.
  
====The Wedge====
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There are many variations on the wedge that make different designs more or less competitive, beyond making the scoop lower, sharper, and more steep (all of which are obvious though important). These modifications will come by intuition and experience, rather than learning about them by reading.
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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The ram design involves a blunt side, which is used to target other bots abd push them out of the area. This design is not ideal, since a bad wedge could beat it, but if it is able to hit the opposing bot on a non wedged side, it could win.
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===Other Factors===
  
 
====The Wheels====
 
====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.
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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====
 
====The Motors====
I think it goes without saying that you want the most powerful motors you can get that are legal under the rules.
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It is clear that the most powerful motors that are legal under the rules are ideal. This gives the robot more power, and thus more leverage when battling with other robots.
  
==The Driver==
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==Driving the Robot==
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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More then any other event, it is key that the person operating the Sumo bot has spent lots of time with the Sumo bot and is a skilled operator capable of thinking on their feet so they can react to the actions of their opponent.  You can have a Sumo bot capable of knocking anything out of the ring, but if the driver is incapable of directing the bot to harness these abilities, the bot will lose.
  
 
==Links==
 
==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]
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:[http://scioly.org/phpBB3/gallery/album.php?album_id=7|Sumo Bots Image Gallery]
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:[http://www.education.ne.gov/science/2015SO/SumoBots%20B.pdf Trial Event Rules (2015)]
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{{2010 National Trials}}
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{{2015 National Trials}}
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{{Inquiry Event}}
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[[Category:Inquiry and Nature of Science Events]]
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[[Category:Building Event Pages]]
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[[Category:Event Pages]]
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[[Category:Trial Event Pages]]

Revision as of 06:57, 25 September 2020

Sumo Bots is a building event which was run in Division C in 2011, and was scheduled to be run as a trial event for Division B at the 2015 National Competition. The event consists of building a robot which is able to push another team's robot out of a designated area.

Building the Robot

There are many ways to build the robot. Vex Kits or a similar building kit can be used, as well as a custom-built robot from parts attained on one's own. The method that has had by far the most success is the custom-built robot, since the size of the motor and the wheel configuration can be altered without being constrained by the parts in a kit.

Price

Under the trial event rules, Sumo Bots is a battle of the wallets, in a sense, since most of the components needed to build a good robot can cost a lot of money. If it is possible to salvage parts such as wheels and motors from old robots or RC cars and the like, this cost may be reduced a bit.

Designs

There are many different design possibilities for Sumo Bots.

The Wedge

The wedge, which is essentially a robot that is shaped like a wedge, is the most popular design. Under this design, 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 many variations on the wedge that make different designs more or less competitive, beyond making the scoop lower, sharper, and more steep (all of which are obvious though important). These modifications will come by intuition and experience, rather than learning about them by reading.

The Ram

The ram design involves a blunt side, which is used to target other bots abd push them out of the area. This design is not ideal, since a bad wedge could beat it, but if it is able to hit the opposing bot on a non wedged side, it could win.

Other Factors

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 is clear that the most powerful motors that are legal under the rules are ideal. This gives the robot more power, and thus more leverage when battling with other robots.

Driving the Robot

More then any other event, it is key that the person operating the Sumo bot has spent lots of time with the Sumo bot and is a skilled operator capable of thinking on their feet so they can react to the actions of their opponent. You can have a Sumo bot capable of knocking anything out of the ring, but if the driver is incapable of directing the bot to harness these abilities, the bot will lose.

Links

Bots Image Gallery
Trial Event Rules (2015)
2010 National Tournament Trial Events
Division B: Helicopter · Model This · Optics | Division C: Helicopter · Protein Modeling · Sumo Bots