Chief Delphi - What do you think of team 61 robot

Chief Delphi (http://www.chiefdelphi.com/forums/index.php)

- Robot Showcase (http://www.chiefdelphi.com/forums/forumdisplay.php?f=58)

- - What do you think of team 61 robot (http://www.chiefdelphi.com/forums/showthread.php?t=16941)

If you have gone through 4 sets of gears why don't you start using chains and sprockets. Is it because the gears work so well hmmm???

Well, first of all, let me say that is a fine looking robot.

Now for some questions. (I didn't read the whole thread, so if it has been answered, please point me in that direction)

1. If a robot comes charging up the ramp and it hits one of your extend-o-rama arms at the very end, can those arms take it? Are they designed to snap after so much forcer? Or will they just bend/throw your robot off to the side?

2. How is your turning? I see you have treads, so that would give you a 0' (in theory) turning radius, but do you skip or any other problems thanks to friction? And what about going up on an angle on the ramp? Are you OK at that, or are your treads off the ground when you hit it at an extreme angle?

3. It seems like you have a guide-wire extend-bobber that retracts it. If a box (or a robot flying over the ramp) comes and hits it, will that be damaged, or is it bomb proof?

4. It seems as if the slightest bit of bend in your arms will not allow you to retract them? Do you see that as a problem?

Well, that is enough to say now. Hope to see you people at a competition!!

Quote:

1. If a robot comes charging up the ramp and it hits one of your extend-o-rama arms at the very end, can those arms take it? Are they designed to snap after so much forcer? Or will they just bend/throw your robot off to the side?

Arms are made out of steel and won't bend or snap.

Quote:

2. How is your turning? I see you have treads, so that would give you a 0' (in theory) turning radius, but do you skip or any other problems thanks to friction? And what about going up on an angle on the ramp? Are you OK at that, or are your treads off the ground when you hit it at an extreme angle?

We spin on a dime and do not skip around. We go up and down the ramp no problem.

Quote:

3. It seems like you have a guide-wire extend-bobber that retracts it. If a box (or a robot flying over the ramp) comes and hits it, will that be damaged, or is it bomb proof?

Cable was strong enough last year to tow 2 goals and an upside-down robot all at the sametime.

Quote:

4. It seems as if the slightest bit of bend in your arms will not allow you to retract them? Do you see that as a problem?

Don't foresee arms being bent.

Quote:

If a robot comes charging up the ramp and it hits one of your extend-o-rama arms at the very end, can those arms take it?

Both arms are made out of 1/4" square tube Steel. The arms alone weigh in at 50lbs. I do not think these arms will bend.

Second these arms are made to take a strong impact and yes hard enough at the ends of those arms the robot will turn. What make it nice is if they do come in contact with another robot the arms will center itself when they hit the side walls of the ramp. When the humans controllers have control it is very easy to bring in those arms.

Quote:

How is your turning?

I guess you have never seen or robot in the past. We have always used tanks. We turn on a dime. to program this robot it is very easy because it will do the same thing every time. That is why we can make it up the ramp as quick as we do. it is not because we have a very fast robot, but it is because we waste no time at all on turning or moving.

Quote:

And what about going up on an angle on the ramp?

If you look at the picture you will see how easy it is for us to go up the ramp. Not only do we hit the ramp at full speed we have are arms out and ready. We have been doing ramps in the past and we have no problem going up, down, or side ways on those ramp.

Quote:

It seems like you have a guide-wire extend-bobber that retracts it. If a box (or a robot flying over the ramp) comes and hits it, will that be damaged, or is it bomb proof?

That is the weak link. but it is in the back of our robot and we have spares. It is a solid piece of alum. no box will hurt it. It would take a hard impact right at that spot to hurt it.

About the arms It would take a lot to bend them and if someone does bend them we get a big Big hammer and bend it back into shape. But the arms them self will be able to move any robot by itself if our robot has enough traction to stop it for moving backward. The arm is run by a winching device.

The arms are always in high tension with the cable.

Quote:

If you have gone through 4 sets of gears why don't you start using chains and sprockets. Is it because the gears work so well hmmm???

The problem is that we twist the output shaft. We do use sprocket and chain on the weaker parts.

The gears work to good these are custom gears. They mate perfect. It is when you ask of them to do something that the steel can't handle.

We are know finding out what is the hardest metal to use. So we don't run into this problem. I would like to see any other robot rip a track that is rated for 1400lbs of torque

that is what happen when a robot stops and the motors are still going. We almost took the walls down that are on the side of the ramps because we were still getting the bugs out on the program.

Quote:

Originally posted by Mike Norton
If you look at the picture you will see how easy it is for us to go up the ramp. Not only do we hit the ramp at full speed we have are arms out and ready. We have been doing ramps in the past and we have no problem going up, down, or side ways on those ramp.

We, also, used treds for a few years, but we found out as soon as you try to go up a ramp, all that touches are the front/rear spots, which is very-very small. Do you forsee this as a problem if you decide to get into a pushing match while on the metal grate?

Quote:

We have test them out when we had to fight for the ramp a couple of years ago and then grab the bar to pull yourself up.

This works very good.

It scares me a little...

Please don't not take any offense to this comment. I think your bot might be a little too powerful. And a little too risky. The first thing it did once on the field was obliterate a box. That can happen once but not twice. Plus if your arms protrude out of the boundaries the refs might disable your bot.

But overall great bot, just becareful not to get disabled;)

I had something about the bin

Quote:

The only problem we see this year are the bins. Were in the rules say you can't try to go under the bar just because there is a bin in front of you. We hit a bin at Qunicy mini-meet and we stop short of making the bin go under the bar. are robot has enough power to push the bins under the bar. some of the bins will bend and others will go in many pieces. Is it the fault of the robot trying to get to the other side or is it the fault of this year game using something that will break under high loads.

Can you answer this

Quote:

We don't take any offense to that. We built our robot to be strong.

The question I have for you is I did not see anybody else use the auto mode. in the meet.

http://www.valleytech.k12.ma.us/Robo...al/TeamPic.JPG

Team Picture

http://www.valleytech.k12.ma.us/Robo...ClearRamp1.JPG

This is what we did well Hit four stacks within 5 seconds. Most of the time we were alone because other could not get up there that quick.

http://www.valleytech.k12.ma.us/Robo...tackAttack.JPG

just before we hit the stack

http://www.valleytech.k12.ma.us/Robo...l/233Score.JPG

This is without any deals playing straight up.

We won 7 out of 10 matches in the seeding rounds