View Full Version : 987 Kicker Destruction
This is what can happen when you make a kicker...
http://www.youtube.com/watch?v=raZdkGxq5Ig
http://www.youtube.com/watch?v=JcSe5Z3tFLI
DBortnick
16-01-2010, 15:21
Wow, certainly looks like you made it over the bump.
ALTrammell818
16-01-2010, 15:32
It looks to me as though we have a winner folks.
Was that just pneumatics?
Please knock over the tower with one of your high speed shots, event if you get red carded for field damage I think you could win the match just for the cool points they would award :D
Proud2BeaGeek
16-01-2010, 15:37
I think I saw tension from rubber or something... with pneumatics to pull it back?
The video did not show energy storage phase. I presume manual method. The energy was stored in three (?) black rubber elastic straps on each side of the frame. No detail shows limit to kicker extension to the bumper outside dimension. Not certain either if the ball was more than 3" inside the frame. I think they were just killing time.
If you guys dial it down a bit you actually might be able to keep it in the arena.
YEESH!
Akash Rastogi
16-01-2010, 17:09
Hahahahaha, nice.
We almost knocked out an illuminated EXIT sign today, luckily it was caged haha.
Hastypickle
16-01-2010, 18:27
You guys might be able to score across the field with that, provided you can aim it precisely (and the school lets you keep it that powerful).
JohnFogarty
16-01-2010, 18:50
this is quite similar to what we are doing though our kicker is like a little foot xDDD
So I know it has been asked, but how are you getting that power? Are you using pneumatics, elasticity, or both?
falconmaster
16-01-2010, 19:06
Slow mo studies
Slow mo repeat
http://www.youtube.com/watch?v=J74oE-4ad_M
Super slow
http://www.youtube.com/watch?v=7SawDgqJxOA
Super super slow
http://www.youtube.com/watch?v=J74oE-4ad_M
Still can see some frames!!!!!!!!!!!! Its fast!!!
AlexD744
16-01-2010, 21:52
I want to see how that works.
those slow motion videos didn't do good for me. I just saw the kicker start, and then I saw it in basically it's finished position. It might be my computer, but I think it was the video.
Al Skierkiewicz
16-01-2010, 21:56
Fredi,
I was mislead by the title of this thread. You should change kicker to launcher. Another clock gives it's life to advance understanding.
=Martin=Taylor=
16-01-2010, 22:12
We had a part of our kicker going flying 15 feet into the air yesterday and land like a javelin in the nearby grass.
Careful when dealing with stored energy!
We had a similar situation here on 868. We punched a HVAC vent back up into the ceiling testing our prototype. A few ceiling tiles also gave their lives for the cause.
We had a part of our kicker going flying 15 feet into the air yesterday and land like a javelin in the nearby grass.
Careful when dealing with stored energy!
You are absolutely right about care needed to insure safety while testing launching mechanisms. We were careful to make sure nobody was near front of mock up launcher until swing arm was locked in place. Tight elastic bands/tubing help limit out of perimeter swing arm extension too...
Akash Rastogi
16-01-2010, 23:02
And watch those fingers! ::safety::
Goodbye clock. Is Elgin next on the casualty list? [:
That's a lot of power, I'm interested in seeing how you guys are doing this. Pneumatics? Springs?
We managed to hit the light the other day (despite the shop's insanely high ceiling). Thankfully, it was already broken...
falconmaster
17-01-2010, 00:07
those slow motion videos didn't do good for me. I just saw the kicker start, and then I saw it in basically it's finished position. It might be my computer, but I think it was the video.
When they shot the video the arm moved so fast that the camera could not capture the frames.....
waialua359
17-01-2010, 01:45
That's gotta be two spring.:) right Joe?
Specifically the pneumatics only as the release mechanism.
With that much speed (force) and a relatively small mechanical advantage, it must be.
Nurnburger
17-01-2010, 02:12
We had a part of our kicker going flying 15 feet into the air yesterday and land like a javelin in the nearby grass.
Careful when dealing with stored energy!
I ran outside when I heard "OOOOOOOOOOOHHHHH!" and "Let's not tell the mentors about this."
Notice how the "foot", the part that strikes the ball, is always parallel to the ground? That is exactly how they teach you to chip a soccer ball.
This thing is awesome.
[QUOTE=waialua359;900882]That's gotta be two spring.:) right Joe?
Specifically the pneumatics only as the release mechanism.
With that much speed (force) and a relatively small mechanical advantage, it must be.[/QUOTE
Just Lowes flat black bungee or surgical tubing snugly wrapped at bottom of arm with nearby frame:)
Just give me a heads up as to where you guys compete so I don't volunteer for field reset... don't want your next video description to say "Goodbye Nica" ;)
dtengineering
19-01-2010, 01:48
I ran outside when I heard "OOOOOOOOOOOHHHHH!" and "Let's not tell the mentors about this."
Yeah, they'd be disappointed that they'd missed seeing it in person!
Jason
Akash Rastogi
19-01-2010, 02:53
I ran outside when I heard "OOOOOOOOOOOHHHHH!" and "Let's not tell the mentors about this."
Similar story.
I was in the woodshop, I heard a loud "THUMP" followed by a "....tile still there? *everyone looks up and then down*"
*facepalm*
This is probably more my fault than anything, but at least its a cool camera angle
http://www.youtube.com/user/FRCTeam999#p/a/u/2/XiiAZ06Ieeo
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