Shooting Distance
 

For those of you who are making ball shooters this year, how far can you shoot the ball, and can you do it at a decent speed?

Re: Shooting Distance
 

Right now, we have about 10-12 feet at a decent speed

http://www.youtube.com/watch?v=bS17iC5CKiY

Re: Shooting Distance
 

We can make the ball into a trailer 10 feet away (back of trailer to front of robot). I have a feeling this is further than would ever need to be shot during gameplay.

By decent speed, do you mean balls/second or the time it takes for the balls to get from the shooter to the trailer? (Line drives sure would be fun to watch!) We are firing at about 4 balls/second.

http://www.youtube.com/watch?v=I9wl1x9Wf_Q

Re: Shooting Distance
 

Decent speed by the air time on the ball, the time we are going up the loader is going to be increased, its way to slow,

Re: Shooting Distance
 

Ours is quite similar. However, we agree its more further than necessary.
Very easy for us without going against a mobile target. :cool: Now that's another story.

Week 1 of regionals this year will be more anticipated by spectators than ever before for those participating in subsequent events.

Re: Shooting Distance
 

We shoot a line drive, and can get 12 feet. The time I was talking about is balls per second. Im not sure how many balls per second we will get because we havent finished the shooter/ball delivery yet. Our shooter wont have any problems getting the balls out.

Re: Shooting Distance
 

we're thinking, that 5 feet or below, is the best distance for this game.....

Re: Shooting Distance
 

I'd love to see a video of it if you have a chance to put one up!

Re: Shooting Distance
 

I dont have a video of the shooter, and I dont know when I will be allowed to post one.

I do have a video of our method of delivering the ball to the shooter.
http://www.chiefdelphi.com/forums/sh...threadid=73413

It is currently being powered by drills, but we will be using a CIM so the speed will be close. That shows about how fast we will be getting balls off.

Re: Shooting Distance
 

3 foot max, we are money from whenever we are in range

Re: Shooting Distance
 

We're planning on about five feet maximum, but realistically, probably closer to three. I think with the orbit balls not having a uniform surface, and with your opponents always moving, getting a orbit ball beyond that distance will be quite difficult. Although it would awesome if some teams program their robot to lead the targets. That would be soooooo coooooooool.

Re: Shooting Distance
 

Working on it....

http://www.youtube.com/watch?v=Bvf33dblw2I

we have a ways to go though

Re: Shooting Distance
 

we are shooting 16ft line drives, but our we do not shoot as many balls per second as other teams. right now we are 93% accurate.

Re: Shooting Distance
 

We do about 6 feet, much more than needed.

Re: Shooting Distance
 

Range around ~ 8 feet

Re: Shooting Distance
 

We were orginally looking at a 10 - 12 foot range but noticed two things we when started to test it out. First, after each shot, the motor and wheels would not get back up to speed and we would lose about 4 - 6 inches off each shot, so shots would start to miss after the first 3 or 4 unless we only shot 1 per second. Secondly, the longer shots tended to drift left and right due to the geometry of the orbit balls - even with a nice top spin. We were looking at about 66% - 75% accuracy with that configuration. So we regeared down to a lower rpm and greater torque - so the rpm recovery time was almost instanteous, and we found we didn't have any drifting. So we are looking at the 0 - 5 foot range for shooting effectively. We can shoot 20 balls, with almost 100% accuracy, in less than 6 seconds at those distances.

Glenn - have a great season - too bad we will be at a regional with you guys this year! I wish you all great success!

Steve

Re: Shooting Distance
 

We're also working on a speed sensor for the shooter, to keep the shooter wheel rpm constant.

Re: Shooting Distance
 

At 620 rpm, we were at 7 feet with 75% accuracy. However, that was just our latest prototype. The real thing will be ~4200rpm max with guided rails for more accuracy... so we'll see ;)

Of course we're scaling it back down to 10-12 feet for accurate shots, and 3-4 feet for maximum throughput. I do like the idea of a miraculous cross-field shot though...or a 'rain' of orbit balls from 20 feet in the air :ahh:.

Re: Shooting Distance
 

Ours is shooting at 8 feet with about 98% accuracy

Re: Shooting Distance
 

We got 5 inches, 100% accuracy.




We're now re-gearing our shooter.

Re: Shooting Distance
 

we've gotten between 15 and 21 feet, but are working on a new shooter.

Re: Shooting Distance
 

We've got our shooter going at around 8-10 feet, and that's working pretty well

Re: Shooting Distance
 

Our turret has a 5-7 feet range

Re: Shooting Distance
 

We have a range, so far, of 6-8 feet... but we can shoot 2 balls at the same time... without much change in the distance...+- 6 inches

This just might be fun....