Launchers VS Arms

[Swampdude]

Inspired by this post - I'm curious what others think about the advantages/disadvantages of either design. Strategy wise , physically or whatever. And who's just going to flat out score the most?

[EricH]

This thread might help you out, Dan.

[AndyB]

I think the best alliances in the finals will consist of 2 arms bots and 1 launcher bot.

As good as launchers can be, they are still dependent (in most cases) on arm bots to remove the trackball as well as place the trackball during the endgame.

I do think launchers though will be the high scoring bots of the regional. However, they may also receive more defense.

[Swampdude]

Originally Posted by EricH

This thread might help you out, Dan.

Bah! Thanks, didn't see that...

[feliks_rosenber]

I personally think it is way better to have a launcher although it is not the best solution in terms of safety.

Therefore, my team initiated a 'Safe Shooter' campaign to make sure all the teams which compete in Tel Aviv regional, as well as all the other regionals worldwide, comply with FIRST safety rules.

We have copied the rules and organized them into a small and simple presentation.

You can access and download it at:

http://www.chiefdelphi.com/media/papers/2082?
'Safe Shooter' courtesy of team 2669 KY Bots, Kiryat Yam, Israel.

[MrForbes]

Originally Posted by AndyB

As good as launchers can be, they are still dependent (in most cases) on arm bots to remove the trackball as well as place the trackball during the endgame.

I don't know about that, the only two mostly finished shooters I've seen (ours and pictures of 842) can knock the ball down (and catch it as it falls), scoop it up, and place it on the overpass, as well as hurdle.

I do think launchers though will be the high scoring bots of the regional. However, they may also receive more defense.

I agree....defense has me concerned!

[s_forbes]

The best strategy that I've come up with in my head (for an all out scorer robot) is a launcher. I think select few really amazing teams will realize that if you launch the ball with enough backspin and at the proper trajectory, it could bounce once and then land back in your robot as you drive under it. Do this consistently, and you could concieveably run 10 second laps with a hurdle every time around.

[hipsterjr]

We have a shooter and I think that launchers will actually have less problems with defense. I stood 1.5 ft in front of our bot (I'm about 5' 8") and the ball went clear over my head! So I know that we can arc over most little "pusher" bots. Launches can shoot on the run, while arms need to slow down a little and get in possition. With good aim, we they can every place the TB on the overpass at the end. Getting the ball off is a little harder though. Also launchers are far less top heavy. As for the back spin mentioned, 1726 is a perfect example.

Ok, well that was extremly bias, but heres my opinion.

[Jon Stratis]

The one potential downfall of a shooter bot is it's heavy reliance on the state of the ball. These balls are going to be going through a pretty big beating on the field, and it's likely that the inflation pressure isn't going to be anywhere near a constant... i predict that a lot of shooter bots will have trouble with consistency between the matches - one ball might clear the rack when shot, but another might not be as inflated and fall short...

[hipsterjr]

Originally Posted by eagle33199

The one potential downfall of a shooter bot is it's heavy reliance on the state of the ball. These balls are going to be going through a pretty big beating on the field, and it's likely that the inflation pressure isn't going to be anywhere near a constant... i predict that a lot of shooter bots will have trouble with consistency between the matches - one ball might clear the rack when shot, but another might not be as inflated and fall short...

Actually, I would think that it would be the other way around. Our launch can shoot the ball no matter the same ( we even shot a '06 poof ball for fun ). While some gripper designs I have seen use wheels and clamps that would be affected by different ball psi.

Just so peolpe don't think I'm stubern, I still expect to see some really good arms in compedtion.

[MrForbes]

That's true, and the state of the game piece can also affect arm robots (as we learned last year with the varying inflation of the rings)

I think either an arm or a shooter robot can be very competitive, and each does have some downsides. We figured out how to make a shooter instead of an arm...so that's what we did...kudos to those teams who make effective arms!

[Pjohn1959]

[quote=AndyB;697308]I think the best alliances in the finals will consist of 2 arms bots and 1 launcher bot.

I disagree. I think that the best alliance will be a launcher, an arm bot, and a bot that can go very fast around the track. Remember, there are only two balls for each alliance to control.

We are also a launcher bot, who can successfully get the ball down off the track in the beginning, so we won't have to rely on someone else to do that. We also have the defense of 'shooting' the ball off the track at the end of the game, for the opposing alliance that might have placed a ball there.

[IndySam]

What about a launching arm?

It will be all about the speed that you can grab and then launch the ball.
I have seen some arms that can do that fast too.
We plan to raise our arm and the shoot the ball on the fly (cross your fingers.)

I think this will be a great game to watch with the different designs all doing the same thing all the while avoiding speed bots racing around the track and defensive bots hording balls and getting in the way of hurdlers.

[HUNT397]

Squirrel add 397 to your list we finished or robot last night and it has the ability to pick it up knock it down and when we shoot at an angle we can place it back on 80% of the time.
I agree that a launcher bot has a disadvantage with the consistency of the ball inflation. BUT if the launcher bot is good it will most likely be given the ball of its choice.
Squirrel be careful catching the ball as it falls is not considered scored. It needs to touch the ground or an opposing robot.
A student posted a picture a while back and we had it removed because we feel that a week 3 picture showing how we were shooting was a bit early.
We have a few pictures up on our website now and better ones to come in the upcoming week.
http://www.firstteam397.com/

[MrForbes]

Originally Posted by HUNT397

Squirrel be careful catching the ball as it falls is not considered scored. It needs to touch the ground or an opposing robot.

Yes, that's true...but I was talking about catching the ball immediately after knocking it down off the overpass in hybrid mode, not when hurdling, so catching it does not (as far as I can tell) affect the score in this case.