![]() |
Re: Fans for defense
Having driven against 1771 in 4 matches, with them in about 8, and watched quite a few others, usually their fans seem to help much more with maneuverability rather than pinning. They can make turns much quicker, but in this game pinning is really about positioning. You much kinda wedge your close to their trailer hitch and push at an angle. Other pins usually are fairly easily escapable, fans or no fans. Note the last qualification match of Palmetto, 21 shut down and pinned 1771 and their fans the hole match.
So in conclusion, I have seen fans effective to aid in turning and some acceleration, but dont make a huge difference in terms of pushing and pinning. |
Re: Fans for defense
Quote:
they will be able to push more than a normal bot theres not really much to argue and i'm not gonna yell at him for posting strategies, lol :D |
Re: Fans for defense
It is hard to get out of a pin in this game, as I said we were not yet pinned while we were being pushed in open field. This is when it is critical to maneuver yourself away before getting pinned between two robots or a robot and a wall. The trick is to recognize exactly when you are getting pushed and to start turning out of it by turning your left side fwds and your right side backwards if you are getting pushed on th left side with your trailer behind you. We tried this when we returned to prove it, it is like pushing against a moving wall, and if the opponnent driver does not expect it, it will work. Sorry if I got the wrong impression, and obviously this will not work if you do not have enough manuvering space.
|
Re: Fans for defense
Quote:
|
Re: Fans for defense
Bug him for posting strategies would've been better wording lol sorry bout that
|
Re: Fans for defense
You guys really think he posted all of our strategies? lol you are mistaken unfortunately for you.
|
Re: Fans for defense
Quote:
Remember, "knowledge shared is power squared" (not sure who originally said that). |
Re: Fans for defense
Quote:
|
Re: Fans for defense
I didn't see anyone post the obvious strategy as far as escaping a pin -> get your alliance partners to help! Teamwork pretty much always wins ;).
As for the original post, fans on defense, not only is it hard to make them powerful enough to be effective, but it is hard to angle them correctly. Any fan pointed at any angle other than parallel with the ground would change the normal force on the bot, which could cause it to be ruled a traction device in violation of R06 (I'm not 100% sure on whether it would qualify, but I believe I recall a GDC post about altering air pressure to increase traction, again, not 100%). |
Re: Fans for defense
Quote:
http://forums.usfirst.org/showthread.php?t=11025 |
Re: Fans for defense
Thanks for the link Eric. Knew I had seen a post, but couldn't remember exactly ;).
|
Re: Fans for defense
Not to slam a team that we pinned, whatever. I'll try to find the video of the match where our team was pinned by two bots, one on each side, and pulled out of it. That was cool.
|
Re: Fans for defense
Quote:
We used FP motors and followed 1771 recommendation on the nuances of the shroud shape: We could push any bot. We put our fans on a turret and varied them between 75% and 100% power in our final two matches. The fans properly used have a dramatic impact. I have no concept of how an expert driver could possibly avoid a pin unless she/he gets their alliance bot to run intentionally run interference: we were faster, more manueverable and could push stronger. If I could start over, then I would recommend a 4 wheel drive train and at least 15 lbs of thrust from four fans on a turret. Turn it into Sumo bot wrestling. Easy pushes and excruciatingly long pins in front of alliance human shooters. I might even throw in a compressor/tubing and solenoids to rapidly puff air to keep the traction wheels and the regolith in front of them free of dust to improve traction. Ball manipulation would be completely optional/superfluous. :P http://www.chiefdelphi.com/media/photos/33618 |
Re: Fans for defense
I hope that no-one took my comments as a slam against ANY team, certainly not 1319. You guys built an awesome bot, and we enjoyed watching and playing with/against you at Peachtree and Palmetto. You guys were deserving of the quality award at Peachtree, as well as the judges award at Palmetto. I only singled you out as an example of using the added thrust of propellers as defense (the whole point of this thread). I still believe that the play in question was not the fault of your driver, or your robot. The added 6-8 Lb.s of thrust from the propellers gave our bot the strength and speed necessary to push a robot sideways all the way down the field.
|
Re: Fans for defense
Good luck at the champs 1771.
|
| All times are GMT -5. The time now is 06:08. |
Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi