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-   -   Ideas for shooter (http://www.chiefdelphi.com/forums/showthread.php?t=110492)

elsenor 05-01-2013 22:28
Re: Ideas for shooter
 
Quote:
Originally Posted by knuckleduster (Post 1208474)
The only problem with shooting for the bottom goal is that you have a limited ammount of frisbees to score in a match. There are only 51 ish per team plus the ones on the field at the start, that is not a lot of attempts to get a high score, and if you take all of your 45 and score one than the other team only has to score 1/3 or 1/2 of that to tie you.
Sure, you're correct. But if you have a team on your alliance that nails almost all their shots to the highest goal, then your team can either score less shots on the low goal or play defense.

Dan Richardson 05-01-2013 22:43
Re: Ideas for shooter
 
Robot in 3 days wanted to try a linear, 2 wheel shooter because it seems to be packaged a bit cleaner within the new FRC build envelope.

The Results Can Be Seen Here

It seems to work pretty well. You seem to need two or more more wheels to make it work because it doesn't accelerate through the same distance as the circular launchers.

ProgrammerTori 06-01-2013 07:11
Re: Ideas for shooter
 
Quote:
Originally Posted by elsenor (Post 1208398)
We tested out if we can throw the bee upside down, but found that the bee curves a lot and experiences a lot of drag this way. The only way to counter this is to put absolutely no spin on the bee, which is pretty hard.


Also do you mind if our team uses this idea here at the AZ Regionals?
No problem.

I've been watching some videos of testing frisbee launchers and I have some concerns regarding the height the frisbees can go when launched. It seems difficult for a robot to get a nice arch with the frisbee. Anyone else notice this problem?

flamer075 06-01-2013 11:08
Re: Ideas for shooter
 
Quote:
Originally Posted by Dan Richardson (Post 1208507)
Robot in 3 days wanted to try a linear, 2 wheel shooter because it seems to be packaged a bit cleaner within the new FRC build envelope.

The Results Can Be Seen Here

It seems to work pretty well. You seem to need two or more more wheels to make it work because it doesn't accelerate through the same distance as the circular launchers.
The problem I see is the curvature, won't it be more beneficial to shoot straight and not have to worry about curvature?

zkiihne 06-01-2013 19:23
Re: Ideas for shooter
 
Is there a way of feeding the frisbees into the oppisite end of the shooter instead of the firing end? This way a bot could back up to a frisbee feeding station and be fed frisbees while it shot at the goals on the other end of the field.

nathan_hui 06-01-2013 20:56
Re: Ideas for shooter
 
A breech loading shooter is what Robot in 3 days has for both demos. You could set up a set of polycord conveyors to maneuver the bees to the breech instead of constraining the breech to the feed slots.

Shane 2429 06-01-2013 23:21
Re: Ideas for shooter
 
you could use a cylindrical gravity feeder at the breech with some sort of piston to push the Bee into the launcher

Team Leader 15-01-2013 00:47
Re: Ideas for shooter
 
Our team is currently prototyping both a linear and curved shooter.


We posted a video on YouTube:
http://www.youtube.com/watch?v=bsaWp0URvN4


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