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 BTW - using any Lavery clue to figure anything out could be equally impossible. - Raul [more] |
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...The game is played on a 120" by 95" carpeted playing field. Teams will play in alliances comprised of two robots for a total of 4 robots on the field at once. The object is to score the whiffle balls by either shooting them from the ground level into either goal, middle two squares on the platform, outer two squares on the platform or having a robot on the inner two squares at the end of the match. Scoring from the ground level is worth 1 point, scoring from the inner two squares on the platform is worth 3 points and scoring from the outer squares on the platform are worth 5 points each. At the end of the match if a robot is in one of the two inner squares it obtains an extra 15 points. Each square on top of the platform is 15" x 15"...
Discussion
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02-07-2007 03:44
AdamHeard
Re: pic: Ultimate 4 Square Field (Vex Game)
Are the rules regarding size, motors, etc... the same as this years FVC rules?
02-07-2007 08:35
Alex Cormier
Re: pic: Ultimate 4 Square Field (Vex Game)
They have 1 week to build, 10 motor/servos max, 1 battery. no larger then 15 x 15 x 24 at start of match.
The field shown here goes along with the white paper i uploaded earlier.
02-07-2007 16:20
StevenB
Re: pic: Ultimate 4 Square Field (Vex Game)
How big are the goal holes?
Can a Vex robot really shoot a golf whiffle ball as far as 5 feet? From what I saw of team #40's mini-FRC last year, a vex-motor-only robot had a tough time shooting the little foam balls more than a foot.
How steep is the ramp? Is there anything preventing robots from falling off the sides?
02-07-2007 17:01
Alex Cormier
Re: pic: Ultimate 4 Square Field (Vex Game)
How big are the goal holes?
the goals are 6" diameter.
Can a Vex robot really shoot a golf whiffle ball as far as 5 feet? From what I saw of team #40's mini-FRC last year, a vex-motor-only robot had a tough time shooting the little foam balls more than a foot.
i am building a robot myself, if it can't be done my self, i will shorten up the field and make it able to score.
How steep is the ramp? Is there anything preventing robots from falling off the sides?
platform height is 10", angle of incline is 20 deg. And there is nothign to prevent robots falling off.
02-07-2007 17:16
AdamHeard
Re: pic: Ultimate 4 Square Field (Vex Game)
I built one last year that was able to shoot wiffle balls a good 8 feet or so. It used 4 motors to power the shooter though.
02-07-2007 17:19
Alex Cormier
Re: pic: Ultimate 4 Square Field (Vex Game)
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Originally Posted by AdamHeard
I built one last year that was able to shoot wiffle balls a good 8 feet or so. It used 4 motors to power the shooter though.
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02-07-2007 21:46
artdutra04
Re: pic: Ultimate 4 Square Field (Vex Game)
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Originally Posted by StevenB
Can a Vex robot really shoot a golf whiffle ball as far as 5 feet? From what I saw of team #40's mini-FRC last year, a vex-motor-only robot had a tough time shooting the little foam balls more than a foot.
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I found a way to shoot those exact same whiffle balls (or ping pong balls) last year a good five to ten feet with only a single motor and one gear reduction.
02-07-2007 22:00
Chuck Glick
Re: pic: Ultimate 4 Square Field (Vex Game)
I was able to make a shooter last year with only one motor and it shot the larger baseball wiffle balls. So it is possible to shoot the balls with a wheel powered shooter as well. One of the pictures should have a link to a video(may not work). The shooter was effective from about a foot range on a 12.5" high goal, but could easily be made to shoot farther.
Another shooter I made (sorry no pics) shot raquetballs like the ones from half pipe hustle. Using only 2 motor and a 1:25 gear ratio, I was able to shoot them about 10 feet.
Just by judging from my own experience, it would be possible to make an effective shooter for the balls, and maybe even one that could shoot across the whole field. 
-Chuck
02-07-2007 22:17
Brad Voracek
Re: pic: Ultimate 4 Square Field (Vex Game)
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Originally Posted by artdutra04
...which means it's time to think outside of the box.
I found a way to shoot those exact same whiffle balls (or ping pong balls) last year a good five to ten feet with only a single motor and one gear reduction. Spoiler for Video:
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02-07-2007 22:19
Alex Cormier
Re: pic: Ultimate 4 Square Field (Vex Game)
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Originally Posted by Brad Voracek
Dang. That's rather ingenious. Props.
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04-07-2007 14:12
Andrew Bates
Re: pic: Ultimate 4 Square Field (Vex Game)
In this picture the shooter robot on the far right used 8 motors, 4 on each side, to get about a 1:22 gear ratio, I think I don't exactly remember what it was. Even then it was only able to shoot them 5-6ft before they hit the ground and maybe only a couple of feet up in the air. Shoot a whiffle ball with spinning wheels is not easily done with VEX motors.
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