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Unread 15-01-2010, 22:04
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Rookie Team 3357 The COMETS Kicker Prototype

Check out our latest videos of our kicker prototype. We're using a pneumatic powered flap to launch the ball over the ramp. We're a rookie team, so I'm EXTREMELY impressed with what we've accomplished so far.

http://www.youtube.com/user/cometsrobotics

You can follow us on Twitter http://www.twitter.com/cometsrobotics

And check out our VERY temporary website at http://firstobjective.org/foresthills

Let us know what you think!
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Unread 15-01-2010, 22:12
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Re: Rookie Team 3357 The COMETS Kicker Prototype

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Originally Posted by GGCO View Post
We're a rookie team, so I'm EXTREMELY impressed with what we've accomplished so far.
I'm impressed too! Very nice.
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Unread 15-01-2010, 22:13
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Re: Rookie Team 3357 The COMETS Kicker Prototype

Looks really good, the ball gets just the right amount of air in order to go over the bumps. I have a few questions:

How many cylinders are you using for the flapper, what diameter/throw is your team using?

Does the flapper stay within the 2 inches/2 second rule?

What type of material is your flapper, what thickness?
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Unread 15-01-2010, 23:00
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Re: Rookie Team 3357 The COMETS Kicker Prototype

Very Cool.

I do have a question. I heard someone say "119, 120", and then the compressor was turned off.

Remember you can only operate the pneumatics at 60 psi, even though the storage tanks can be at 120.

Maybe you are set up that way, but i just wanted to be sure.
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Unread 15-01-2010, 23:51
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Re: Rookie Team 3357 The COMETS Kicker Prototype

great job guys, congrats on the kicker. Hopefully we see this on your final designed robot come march.

Good luck!
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Unread 16-01-2010, 07:43
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Re: Rookie Team 3357 The COMETS Kicker Prototype

Quote:
Originally Posted by Chris Fultz View Post
Very Cool.

I do have a question. I heard someone say "119, 120", and then the compressor was turned off.

Remember you can only operate the pneumatics at 60 psi, even though the storage tanks can be at 120.

Maybe you are set up that way, but i just wanted to be sure.
Yes we had 120 in the two tanks we were using, but we did not release all of that at once. So to answer your question, I'd have to double check, but I think that we were operating the pneumatics at 60 psi.

Quote:
Looks really good, the ball gets just the right amount of air in order to go over the bumps. I have a few questions:

How many cylinders are you using for the flapper, what diameter/throw is your team using?

Does the flapper stay within the 2 inches/2 second rule?

What type of material is your flapper, what thickness?
We are using one cylinder, and yes the flapper does stay within the 2inches/2seconds rule. Currently the flapper is made out of (roughly) 1/8" plastic material.

Hopefully there will be more progress today, and I'll have new videos on our YouTube channel
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Unread 16-01-2010, 07:58
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Re: Rookie Team 3357 The COMETS Kicker Prototype

Nice job. I can't wait to see more on your guys..
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Unread 16-01-2010, 08:07
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Re: Rookie Team 3357 The COMETS Kicker Prototype

Quote:
Originally Posted by nathan.chupp View Post
Nice job. I can't wait to see more on your guys..
Simple and effective. Great way to start!

I anticipate a guard will be employed up front to prevent 'possessing' more than one ball as you cruise toward the goal.

Keep up the good work
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Unread 16-01-2010, 08:12
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Re: Rookie Team 3357 The COMETS Kicker Prototype

Very nice. I hope you guys make it to the State Championships so I can see the final version in competition.
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Unread 16-01-2010, 08:20
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Re: Rookie Team 3357 The COMETS Kicker Prototype

Great job!

How fast is the recycle time for another kick? How about a picture from above so we can see the setup.
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Unread 16-01-2010, 10:20
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Re: Rookie Team 3357 The COMETS Kicker Prototype

Quote:
Originally Posted by terryo View Post
Simple and effective. Great way to start!

I anticipate a guard will be employed up front to prevent 'possessing' more than one ball as you cruise toward the goal.

Keep up the good work
I don't see anything on the robot right now that can possess one ball, nevermind several. Remember, a possessed ball is defined as staying in the same position relative to your robot if your robot moves. A ball pushed by the front of this robot will not satisfy that criteria; when moving the robot backwards or turning a ball will simply roll away.
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Unread 16-01-2010, 10:33
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Re: Rookie Team 3357 The COMETS Kicker Prototype

I like it, why diameter is the cylinder you are using?

Also, just a side note (a difficulty we are coming across), whatever you are using to keep the ball at the proper position for the kicker, will almost always (unless you find a way around it), interfere with the projection of the ball when kicked.

And sorry for being a critic, but I'm worried about the bumpers and if they will interfere with the ball.

Overall, extremely good and simple device. Nice way to KISS.
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Unread 16-01-2010, 10:36
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Re: Rookie Team 3357 The COMETS Kicker Prototype

Its not a 2in 2 second rule. It is a rule that states you can extend beyond the frame perimeter, up to the bumper perimeter, under the bumper zone for up to 2 seconds. So if you do the math you can actually extend up to 3.25 inches beyond the frame perimeter. You have a 3/4" plywood backing and a 2.5" diameter foam water-noodle.
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Unread 16-01-2010, 14:35
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Re: Rookie Team 3357 The COMETS Kicker Prototype

Thanks for all the great encouragement and concerns! There are more pictures up on our Facebook group. I hope you enjoy! Thanks again!

http://www.facebook.com/group.php?v=...d=186836602739
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Unread 19-01-2010, 15:03
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Re: Rookie Team 3357 The COMETS Kicker Prototype

Here's the latest video guys!
youtube.com/user/cometsrobotics

As you can see, our kicker has been upgraded and we're able to make it over the bump easily.

Also, here is a bird's eye view of the robot (this is an older picture - a more up to date one would show motors mounted).

http://hphotos-snc3.fbcdn.net/hs125.snc3/17237_1280196039692_1073787706_30874240_6345538_n. jpg
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