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questionguy wrote:Hey, so my state competition is on Saturday, and we have the bot ready to go, but we want to put a wedge on it. Do you think using acryllic will be a good substitue for metal? It is thicker than the metal, but we are short on time. We also have the option of using wood, but that is our plan C. Any advice?

Acryllic should work just fine

questionguy wrote:Hey, so my state competition is on Saturday, and we have the bot ready to go, but we want to put a wedge on it. Do you think using acryllic will be a good substitue for metal? It is thicker than the metal, but we are short on time. We also have the option of using wood, but that is our plan C. Any advice?

Don't even bother with plastic/wood; you simply won't be able to get it sharp enough. It sounds like your bot is screwed if another team gets under it (most bots are), so you absolutely need a metal-tipped scoop.

Go to Home Depot, buy a 12" x 12" sheet of steel or aluminum. Cut off a thin little strip (maybe an inch?), and screw it down on the front edge of your acryllic. Bend the corners down, and you'll have a nearly unbeatable scoop, as long as you attack with those corners.

Primate wrote:

questionguy wrote:Hey, so my state competition is on Saturday, and we have the bot ready to go, but we want to put a wedge on it. Do you think using acryllic will be a good substitue for metal? It is thicker than the metal, but we are short on time. We also have the option of using wood, but that is our plan C. Any advice?

Don't even bother with plastic/wood; you simply won't be able to get it sharp enough. It sounds like your bot is screwed if another team gets under it (most bots are), so you absolutely need a metal-tipped scoop.

Go to Home Depot, buy a 12" x 12" sheet of steel or aluminum. Cut off a thin little strip (maybe an inch?), and screw it down on the front edge of your acryllic. Bend the corners down, and you'll have a nearly unbeatable scoop, as long as you attack with those corners.

Thanks, we ended using the acryllic and angling it at probably 15 degrees. I was a little worried at first but it turned out to a good decision because we got 2nd place at states.

questionguy wrote:

Primate wrote:

questionguy wrote:Hey, so my state competition is on Saturday, and we have the bot ready to go, but we want to put a wedge on it. Do you think using acryllic will be a good substitue for metal? It is thicker than the metal, but we are short on time. We also have the option of using wood, but that is our plan C. Any advice?

Don't even bother with plastic/wood; you simply won't be able to get it sharp enough. It sounds like your bot is screwed if another team gets under it (most bots are), so you absolutely need a metal-tipped scoop.

Go to Home Depot, buy a 12" x 12" sheet of steel or aluminum. Cut off a thin little strip (maybe an inch?), and screw it down on the front edge of your acryllic. Bend the corners down, and you'll have a nearly unbeatable scoop, as long as you attack with those corners.

Thanks, we ended using the acryllic and angling it at probably 15 degrees. I was a little worried at first but it turned out to a good decision because we got 2nd place at states.

Congrats! Was your acryllic able to get under the other bots, or did you just rely on pushing power?

Yea, we were able to get under some bots, but we mostly relied on the pushing power and strength of our bot

From my experience, I think it's incredibly crucial that you practice with your sumo bots WITH STRATEGY
in state i like pwned all the other teams who had really amazing robots, only because they would just try to go straight and run right into me while i sneak out to the side and push them out (although i didn't practice). So be smart. don't just go around trying to push other robot and get pwned.
The key is that you analyzed the robot's speed, systems, and power. DO NOT MISS OUT ANYTHING. Not your match? IT'S RELATED. O YEA
Also, the speed of the robot's really important as well. If ur robot sux, but really really really fast, u can beat anyone. Just try not to get other robots under yours. go to the back and push them. (TIP: F = ma)

Hi,
So my partner and I have a pretty good robot. The wedge can go under anything, and it can lift things up. However, it an only push about 1.3kg. Is this going to be a problem??

probably yeah. most of the good robots go way over 1kilo so it's not safe. Some robots are really simple but they are designed to go under stuff as well
If your robot doesn't weight much, it might be a good idea to distribute all your weights right on (or somewhere near) the wheels to make it sturdy.
It makes your robot really really fast and that should probably take care of 1.3 kilo problem (again, F = ma).

P.S. there was a robot as such in state that i competed against with... but when it tried to lift my robot up i just went straight back and then ran into it
so that my robot gets under the lifter thingy... so make sure the opponent's robot is securely on your lifter thingy and is slower than yours, or about the same so that they don't have time to retreat,,,

Hey guys,

They just reinstated Sumo for states for Ohio as a trial. My friend and I are using a modified Traxxas rc car@7.2v with some pretty sweet speed (if we back out of the square and floor it at the opposing bot) around 10-20 mph. At ~1.9kg and a strong metal scoop, I would assume that would be pretty effective right? Or is the design flawed by speed? Just wondering, as we didn't have it at regionals.

Tim

tjessberger wrote:Hey guys,

They just reinstated Sumo for states for Ohio as a trial. My friend and I are using a modified Traxxas rc car@7.2v with some pretty sweet speed (if we back out of the square and floor it at the opposing bot) around 10-20 mph. At ~1.9kg and a strong metal scoop, I would assume that would be pretty effective right? Or is the design flawed by speed? Just wondering, as we didn't have it at regionals.

Tim

10-20 miles per hour,,, that'd be awesome
Just make sure you can control it, the turning point and everything,,,