can you still hang with that design? seems like it’d get in the way…
@mwang17. It certainly does look like itd get in the way, btw the way it supports the robot on its tip backwards is straight into the joint on the back, so you dont need a lock mechanism
Better pictures as requested
update, we have moved to a pneumatic anti tip, and it works very well, ill post a video when i have access to my phone
Hey sorry to bump an old thread, but i was wondering what that polycarbonate on the newest picture was. Is it to help the andtip tip?
Also, does the anti tip work well? It seems that it would not be very effective since youre only using 1 rubber band.
Our team (3249C) originally thought about using an anti-tip, however we didn’t have an extra motor to use, and nobody on our team had any good ideas for adding a passive anti-tip. So we took 2 C Channels, stuck them together so they took up the least amount of space, and filled them with steel 1-by 's. Then ziptied this to the front of the robot, and moved the battery to the front of the robot. Now we very rarely tip, and when we do can gather enough momentum from swinging our arm that we tip right back up to the correct position. We are using a a x drive with small omni-wheels, very close to ground.
@Vexly its ok, no that poly carbonate doesnt help with anti tipping, its 100% decrotive ill let you know that after this thread, we switched to a pneumatic antitip, and it works marvelously, if you want i could pictures and a video
Here is what one of my teams did. They made their own version of a linear slide using C channels. Their anti-tip comes out the back with small rollers on it. They come back in when pressed but not when tipping. Here is a video of the robot hanging and you can see the anti-tipping mechanism hanging out the back. By they way, we know the poll is in the wrong place in this video.
My teams made a winch to reel them back in. ---- VEX winch kit
@n5vei do you think thats a wasted motor? when it could go to powering a claw or lift?
Would a one motor slip gear linear mechanism work? Powered by a ton of rubber bands and will extend as time flies during the match, and at the last second you will release the mechanism and you will do a high hang in 0.5 seconds.
Not a waste when you had 2 extra to use and most of all the team was tipping major when there was no anti-tip. They tried using air, but it was weak and would not stay deployed. With the rubber band deploy and a winch to bring them back in… they never tipped again. We thought about the wasting… but frankly when you tipped as easily as thy did… they did not mind wasting the motor.
I tried for a similar mechanism over the summer. It would start compressed, but when it hit the pole it would expand, rocketing the robot into the air. It required an absurd amount of rubber bands, was a blatant violation of <S1>, and also was near impossible to reset, and certainly couldn’t have been put inside 18" in a 3 minute timeout. The way I reset it was to stick an allen wrench in it, pull it back as far as possible, take another wrench, pull it back, rinse and repeat. I ended up with a few wrenches with 2 90 degree bends.
Do you have a video?
i ran into the same problem i rose my anti tip bar up about 2 - 5 inches off the ground it still works very well . so if you think about your robot in a circle while it high hanging you can image where to put the anti tip bar so it doesn’t interfere with the hanging process.
if you have any question hit me up @afmhammer@gmail.com
No, but I have a scar on my leg, which is basically the same thing.
Like I said, very much a violation of <S1>.