Happy new year everyone from Pacific northwest. We are a humble team of four. We need support as we are approaching our competition on 10th. Our Robot is not sturdy and is falling apart.
Some fun facts: Some or all of us love math, reading, Sports, building, fun facts, music and Video games.
You should try to make the place around your gears for the claws stronger because the tip of the claws look pretty heavy. Can I get a better photo of your base plates connected to the gears are attached to your robot?
Those motors are not aligned, so this probably means that the whole base isn’t sturdy, or I am still tripping.
Is the brain supposed to be on the ground, or you just haven’t attached it because that is a hazard. @random_guy already mentioned that the claw seems to be heavy, and I can agree with them. My team has attempted to build a 180 mech with that same lift, and the lift couldn’t support the weight.
I have a couple of rules I try to drive into the heads of our builders. Square and Symmetrical.
Avoid pins in tension, your connections should always put the force direction in sheer if you can,
Square box beams reduce flex. if you have a long bed, try to have another beam the same length set at 90 degrees (long way). Also it looks like at least one of your axles is not supported on both sides of the gearwheel. That is critical to stability.
Yes, a lot of your robot seems tilted and lopsided. Make sure that your drivetrain is perfectly symmetrical. At this point, it may be too hard to fix, so I’d recommend rebuilding your drivetrain and adding your already built claw onto that.
Square. Square. Square. Word to live by. More in V5, but in VIQ it’s a key.
Triangles are your friend. Cross braces keep things square. (Part of the problem in the OPs robot is that the two cross triangles are not locked together)
Symmetrical is the same way. An exact left and right, front and back.
I’ll add more pins always help. I’ve become a huge fan of 0x pins they don’t come out.
When running load bearing axles through beams, double stoppers help.
On the big drive gears, pin the beam with 4 pins in a square pattern around the axle.
especially right triangles. I drum this into my kids. I have third graders understanding the pythagorean Theorem almost, at least the part about how pythagorean triples help square their robots.
Showing my son this thread and he asked to show his team’s robot and one of their favorite parts - the triangle truss plate. Last year the Swish bot used it to brace the catapult. This year my son’s team uses four of them to brace their large and tall 3x20 plate serving as the support and fulcrum for a heavy arm. The whole arm structure - intake, arm bars, counterweights - weighs about 3 pounds. It’s all controlled by a single motor due to counterweighting and torquey gearing. The triangle truss plates make the whole structure really solid. Fortunately our lab had enough in yellow for the team to stick to their general color guidelines.