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-   -   Event Predictions (http://www.chiefdelphi.com/forums/showthread.php?t=114295)

Lil' Lavery 26-02-2013 10:27
Re: Event Predictions
 
Quote:
Originally Posted by AllenGregoryIV (Post 1240330)
I'm still not sure this rule was as much for safety as it was for game mechanics. With out this rule 2006 would have been a very different game. Full court shooters in 2006 would have completely broken the game.
Psssh, don't tell me that seeing an endless cycle of poof balls being lobbed from opposite corners to the goals wouldn't have been stupidly entertaining. Plus there could have been all sort of "don't cross the streams" jokes.

JohnFogarty 26-02-2013 10:39
Re: Event Predictions
 
Quote:
Originally Posted by mwmac (Post 1240579)
Would not be surprised to see First implement a shooter wheel safety check in the queue to spot unsafe wheel balancing....
See this is where I get really confused that teams don't do what we did...
It's obvious that the Innertube's air nozzle is why the wheel spins off balance.
So we took ours out and filled the tire with pool noodle foam. No more fuss whatsoever. It's probably 100x safer as well.

mwmac 26-02-2013 10:41
Re: Event Predictions
 
Quote:
Originally Posted by John_1102 (Post 1240587)
See this is where I get really confused that teams don't do what we did...
It's obvious that the Innertube's air nozzle is why the wheel spins off balance.
So we took ours out and filled the tire with pool noodle foam. No more fuss whatsoever. It's probably 100x safer as well.
Sounds like a simple and safe solution...

Racer26 26-02-2013 13:52
Re: Event Predictions
 
Quote:
Originally Posted by John_1102 (Post 1240587)
See this is where I get really confused that teams don't do what we did...
It's obvious that the Innertube's air nozzle is why the wheel spins off balance.
So we took ours out and filled the tire with pool noodle foam. No more fuss whatsoever. It's probably 100x safer as well.
Except for the part where pool noodle foam doesn't get you the adjustability of changing the air pressure in the tire to adjust how it grips the DISCs.

Also, maybe I'm just not envisioning it correctly, but I dont see how you prevent the tire from pancaking at speed too. I spun up an AM pneumatic 1:1 on a CIM, with no air in the tire, and the tire visibly pancakes a substantial amount.

Racer26 26-02-2013 13:54
Re: Event Predictions
 
Quote:
Originally Posted by Koko Ed (Post 1240560)
I thought FIRST mandated that all moving parts had to be shielded in the robot.
Only relevant rule I can find is this one:

Quote:
Originally Posted by 2013 FRC Game Manual
R08
ROBOT parts shall not be made from hazardous materials, be unsafe, cause an unsafe condition, or interfere with the operation of other ROBOTS.

Hebrew 26-02-2013 21:12
Re: Event Predictions
 
Quote:
Originally Posted by Koko Ed (Post 1240560)
I thought FIRST mandated that all moving parts had to be shielded in the robot.
If that is true our robot is not rule-abiding. I could not find any rule that states this....and we have our shooter wheels on top of the robot very much so exposed.

JohnFogarty 26-02-2013 22:33
Re: Event Predictions
 
Quote:
Originally Posted by 1075guy (Post 1240674)
Except for the part where pool noodle foam doesn't get you the adjustability of changing the air pressure in the tire to adjust how it grips the DISCs.

Also, maybe I'm just not envisioning it correctly, but I dont see how you prevent the tire from pancaking at speed too. I spun up an AM pneumatic 1:1 on a CIM, with no air in the tire, and the tire visibly pancakes a substantial amount.
Our tires don't pancake at all.
Of course I can't prove this without the robot, but The foam works wonders. We adjust the compression by change how much of the tire actually contacts the Frisbee itself.

catacon 26-02-2013 22:40
Re: Event Predictions
 
With air or foam in the tire, the AM will not pancake nearly as much as with no air. In our testing, we found that being able to adjust tire pressure and Frisbee compression (e.g. moving the wheel in and out) was beneficial. For that reason, we decided not to use foam.

Our shooter is mostly encased in 3/8" aluminum and the only exposed part of the wheel is covered by Lexan. So if it decides to grenade, the blast should be contained. ::safety::

Travis Hoffman 27-02-2013 00:50
Re: Event Predictions
 
I used to be a FIRST Robotics mentor...then I took a Frisbee to the knee.

Garten Haeska 27-02-2013 00:56
Re: Event Predictions
 
Quote:
Originally Posted by Travis Hoffman (Post 1240971)
I used to be a FIRST Robotics mentor...then I took a Frisbee to the knee.
You sir have made my season!

Koko Ed 27-02-2013 02:51
Re: Event Predictions
 
Quote:
Originally Posted by Travis Hoffman (Post 1240971)
I used to be a FIRST Robotics mentor...then I took a Frisbee to the knee.
That should be a button.

DampRobot 27-02-2013 02:53
Re: Event Predictions
 
Quote:
Originally Posted by Travis Hoffman (Post 1240971)
I used to be a FIRST Robotics mentor...then I took a Frisbee to the knee.
This is so much better than all those stupid "do you even lift (for 30)" memes!

ferret_guy 27-02-2013 11:53
Re: Event Predictions
 
Based on the safety concerns i'm wearing my masks (I have 2 of these)


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