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View Full Version : Team 1058 2-Wheel prototype shooter

Brandon Zalinsky
12-01-2013, 15:09
This is one of the prototypes that we are pursuing for this year. It's very similar to the robot in 3 days shooter. it shoots about 20 feet or so, we still need to optimize the angle and speed.

http://youtu.be/v-L3Y6_aWSk
Leav
12-01-2013, 16:43
I'm curious, why are people going for 2 wheels rather than 1?
androb4
12-01-2013, 17:49
I'm curious, why are people going for 2 wheels rather than 1?

So the frisbees will contact a whelk for more time than one.
Ether
12-01-2013, 18:04
I'm curious, why are people going for 2 wheels rather than 1?


http://www.chiefdelphi.com/forums/showpost.php?p=1213466&postcount=9
androb4
12-01-2013, 18:09
http://www.chiefdelphi.com/forums/showpost.php?p=1213466&postcount=9





I couldn't have explained it any better.
..really.
yara92
12-01-2013, 18:21
My answer is another quation why to use wheels ? why not with some thing eles
rwkling1
12-01-2013, 18:30
one thing you may want to consider is pneumatic wheels, i've noticed in a lot of places that pneumatic wheels (8 inch pneumatic wheels from andymark) work much better, just a suggestion
CalTran
12-01-2013, 20:43
My answer is another quation why to use wheels ? why not with some thing eles

Such as a form of belting or do you have some other material in mind? Simple answer to your question - wheels are readily availiable and easily interfaced with motors.
Brandon Zalinsky
12-01-2013, 21:05
My answer is another quation why to use wheels ? why not with some thing eles

We've already prototyped and scrapped a shooter that used belts. We just couldn't find a belt that we had that both a) could be run well/efficiently (i.e. timing belt) and b) had enough traction to get a good "stick" on the frisbee.

The shooter that we built had two timing belts running horizontally, and the frisbee was pushed between them. The frisbee went about two feet, and we determined that there was not enough friction between the belts and the disc.
Team Leader
15-01-2013, 00:49
Our team is currently prototyping both a linear and curved shooter.
We posted a video on YouTube:
http://www.youtube.com/watch?v=bsaWp0URvN4

We used bane bot motors and pneumatic wheels
Squeakypig
15-01-2013, 07:13
My team has prototyped a flinging arm (skeet disc launcher type thing), a round shooter (about 90 degrees), and a 1-wheel straight shooter. We are currently converting the 1-wheel into a 2-wheel to see if we can improve upon our design. However, that being said, the best prototype so far has been the 1-wheel straight shooter. We set up our shooter on a chair to be at "robot height" and set it at the front of the pyramid on our field and it was rocketing the frisbees into the high goal. Just like last year, the speed your shooter wheel is going effects the spin of the frisbee moreso than the velocity. See if you can whip up a prototype in a PINCH to see what else might effect the end result.
Brandon Zalinsky
15-01-2013, 08:48
My team has prototyped a flinging arm (skeet disc launcher type thing), a round shooter (about 90 degrees), and a 1-wheel straight shooter. We are currently converting the 1-wheel into a 2-wheel to see if we can improve upon our design.
The other advandage of the straight-shooter is that it's easier to fit inside this year's compressed frame, especially if you make the shooter's angle adjustable. The other shooters will fit in the robot (we're almost finished a prototype 90 degree round), but you'll start to run out of space fast.