# Weight of robot for tower takeover?

I was wondering about the weight of my robot and took out a kitchen scale, I realized that it was around 20 pounds. However I was curious to as to whether or not it is considered heavy or light. What is the weight of your robot? Take the poll below:

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• 0-5 pounds
• 5-10 pounds
• 10-15 pounds
• 15-20 pounds
• 20-25 pounds
• 25-30 pounds
• 30-40 pounds
• 40-50 pounds
• 50-70 pounds
• More than 70 pounds

0 voters

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And furthermore what do you use to weigh your robot? :

• Kitchen scale
• Body scale
• Luggage scale
• Traditional lever method

0 voters

1 Like

The weight of the robot doesnâ€™t really matter just as long as the robot is built to be as light as possible while still being effective.

Thatâ€™s true, but Iâ€™m still curious about the results.

1 Like

The lighter the better, but donâ€™t compromise structural integrity to be lighter. Also, donâ€™t over engineer and try to over strengthen something. Finding the right balance is difficult but it should come naturally.

4 Likes

Is their no maximum weight cause it doesnâ€™t really talk about it in the game manual. Or at least I didnâ€™t see it

There isnâ€™t a maximum weight in the manual. but I guess a practical maximum weight will be the weight of an 18 inch steel cube

5 Likes

Yeah, lighter is better. Try to use aluminum to decrease the weight. But donâ€™t skimp on strength and structural integrity as this could cause your robot to break mid-match.

2 Likes

That being said, the density of steel is around .291 pounds per cubic inch. An 18â€ť cube (18^3) equates to 5,832 cubic inches of space within the bounds of the cube, and multiplying the amount within the cube by the density gives us (5832*.291) = 1,697.12 pounds of possible material for a robot. HOWEVER, the rules regarding a legal robot state that all materials must be VEX-certified, which dense raw steel is NOT. So, we will have to use 5x25 hole steel plates as a backup. These plates are weighted at 0.327 pounds per plate, and are 0.046â€ť in thickness. This means that we can stack a maximum of 391 plates from the ground to the top of the 18â€ť area allowed. The 5x25 plate are 2.5â€ťx12.5â€ť in total area (from the perimeter) which means that they take up a total of 31.25in^2 of space, and a total of (31.25x0.046)= 1.4375 in^3 of space. This means, in a perfect world, we can cram 4,057 Steel plates into the possible area. Now, this is fun and all, but it still doesnâ€™t meet the requirements of a robot. in order for that (in a loose sense) we need a cortex , a battery, and a key. The cortex takes up 17.15 in^3 of space, or about 12 steel plates worth. The battery takes up 10 steel plates worth, and the key takes up only 1 steel plateâ€™s worth of space. This means, including the 1.13lbs coming from the combination of the necessary items for a robot, we can fit an adjusted total of 4,034 steel plates onto our perfect robot. This means, our perfect robot will weigh (4.034x.327+1.13) pounds, or a total of 1,320.248 pounds.

TL:DR- my robot this year will be only 4,034 steel plates and a few basic necessities, and will weigh a total of 1,320.248 pounds.

11 Likes

4034 steel plates

Ships in: yeah weâ€™re not giving you that

Why usually they would be fine with selling that amount at a standard price. Even with a half price they would likely do it.

But then everyone would hate you because they have to wait 8 weeks to get their steel plates lol

1 Like

I donâ€™t think any of the stell plates are on backorder.

Be sure to check with the EP before bringing your forklift to the event!

5 Likes

WAIT.
Here this
Forklifts lift pallets in the shape of CUBES and STACK them on top of each other, as well as stacking them high on TOWERS of shelves.

Maybe itâ€™s not just a water game. its a water forklift game bois

Yeah this is dumb

1 Like

You can see the results

For offensive designs lighter is better but for defensive designs itâ€™s quite the opposite.

Weâ€™ve played some matches against 30-35 pound robots in turning point, it doesnâ€™t matter if you have more torque than them they have momentum and weight which will absolutely shove you around.

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although it is pretty funny when those 30-35 pound robots have omni-wheels and you can push them from the side.

2 Likes

I disagree with most of you. If you have a heavier robot, especially lower like the base, it minimizes tipping. This is why a steel base is a better choice in my opinion.

Smart smart, but this would mainly be good for only robots with lifts. Anything else wouldnâ€™t really need a steel base

Not necessarily, I have a complex tray bot that can stack 11 cubes and once you get that many on one ramp you tip. You still need wheels that pop out to the back, but steel definitely helps.

1 Like