Hardest Shooting Robots

[GreyingJay]

Originally Posted by fox46

Basically it's about trajectory. You want the flattest one so that when aiming, your shot is less dependent on the distance to target. Furthermore, the shot is less dependent on the condition of the game pieces.

Aha. That's what I was trying to get at with my (counter) intuition about dealing with factors affecting ball trajectory.

[dkavanagh]

We all see videos of shooters working, but at the NYC regional, I saw a lot of missed shots. thebluealliance.com has some great stats, but nothing on shooting percentages. Anybody have any real data on percentage of made shots in high goal?

[cgmv123]

Originally Posted by AdamHeard

This thread needs videos.

Just a prototype that didn't end up getting used, but here you go: https://drive.google.com/file/d/0Bzx...ew?usp=sharing

[Michael Corsetto]

Originally Posted by cgmv123

Just a prototype that didn't end up getting used, but here you go: https://drive.google.com/file/d/0Bzx...ew?usp=sharing

The reactions in this video are fantastic.

[tickspe15]

Our robot shoots pretty fast.
It's 4 775pro's with a roughly 2.5:1 reduction and 4" stealth wheels with the second set running faster than the first with a surface speed of 130fps. I believe we currently have just over 1.75" of compression. We decided to shoot the ball as fast as possible with as little compression as possible to minimize the effect of ball inconsistencies. In testing there has been little to no noticeable difference between new and heavily abused balls as long as there are no large chunks taken out

http://imgur.com/a/oG3xE

At competition we were running the shooter at 60%
Match Videos:https://www.youtube.com/playlist?lis...XQSRbiXWyekewe

[The other Gabe]

Unsure as to how powerful they were, but both 4488 and 3663 had issues with boulders rebounding out of the tower after their shots at their first events.

if you really want the kings of ridiculously hard shots, gotta go back to 2013 the robot I remember best from that is 3711; this video shows it relatively well at the 40 second mark, but you kinda had to be there. when they shot, you felt it; http://www.thebluealliance.com/match/2013wase2_sf2m1

[philso]

How about a 200mph shot?

[Richard Wallace]

Gratuitous slo mo FTW.

[Thayer McCollum]

Although not a robot from this year the most powerful shot I have ever seen was 159's robot from 2014. It was a catapult and the power it had was incredible overkill. The catapult was powered by four 500lb springs. 2000lbs of force! 2000! It had so much power that one time it was triggered without a ball in the 'pult and the bot launched up into the air and nearly did a complete front flip. The best part about it is it scared the safety inspectors to death, so in order to pass inspection the inspector told us if a team member stuck their hand in the springs when they were extended and held their hand there for 5 seconds we would pass inspection. So a guy from our team volunteered and promptly put his hand in the spring. A spring that, if its mounts failed would slam closed and crush his fingers into oblivion. This robot still scares 159ers to this day, its power was legitimately terrifying.

[Knufire]

Originally Posted by Thayer McCollum

The best part about it is it scared the safety inspectors to death, so in order to pass inspection the inspector told us if a team member stuck their hand in the springs when they were extended and held their hand there for 5 seconds we would pass inspection.

So a volunteer forced a student to put themselves in a risky, unsafe situtation in order to demonstrate that the robot was safe?

Am I the only one that fails to understand this logic?

[AdamHeard]

Originally Posted by Knufire

So a volunteer forced a student to put themselves in a risky, unsafe situtation in order to demonstrate that the robot was safe?

Am I the only one that fails to understand this logic?

Nope, sounds like crazy people acting crazy.

[CalTran]

Originally Posted by Thayer McCollum

The catapult was powered by four 500lb springs. ---The best part about it is it scared the safety inspectors to death, so in order to pass inspection the inspector told us if a team member stuck their hand in the springs when they were extended and held their hand there for 5 seconds we would pass inspection. So a guy from our team volunteered and promptly put his hand in the spring. A spring that, if its mounts failed would slam closed and crush his fingers into oblivion.

Originally Posted by Knufire

So a volunteer forced a student to put themselves in a risky, unsafe situtation in order to demonstrate that the robot was safe?

Am I the only one that fails to understand this logic?

No, you're not alone there. I'm questioning whether this actually happened.

[araniaraniratul]

Originally Posted by Poseidon5817

Here you go!

$@#$@#$@#$@#, that's meta

[XaulZan11]

Shooting hard is nice until you miss and the ball ends up in the opponent's courtyard. When designing shooters, I don't think anyone plans on missing, though.

[Type]

My team was able to shoot pretty hard by the end of the season. We originally had two mini cims, each geared 1:1.67, running 4" grey Andy Mark Stealth Wheels. It compressed it to 7.5" roughly. After our first event, we took the gearboxes off so it was 1:1. We switched the gray wheels to black ones, gripper, then doubled them up. This created more contact surface. Between the torque of the mini cims and surface area/ compression, we could launch some boulders with force. I just wish we would have had more time to experiment with wheels.