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  #61   Spotlight this post!  
Unread 03-01-2009, 21:25
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Re: How can we drive on this new floor?

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Originally Posted by Dracco1993 View Post
I still need help on thebluealliance thing please.

try here
http://www.thebluealliance.net/tbatv.../teambadge.php
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Unread 03-01-2009, 21:32
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Re: How can we drive on this new floor?

So here's my basic Idea for anyone who was following, Use a fan or such to provide thrust downward, or basically a (much) lower pressure area underneath the bot, the result (hopefully) would be more weight force downwards, making up for that lost weight force from the low traction, I'm not entirely sure exactly how to implement, and I'm not bothering to run the math on how much airflow is required to make up even say 200 lbs, but something like this might be sufficient,

any thoughts?
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Unread 03-01-2009, 21:38
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Re: How can we drive on this new floor?

Quote:
Originally Posted by Zyck_titan View Post
So here's my basic Idea for anyone who was following, Use a fan or such to provide thrust downward, or basically a (much) lower pressure area underneath the bot, the result (hopefully) would be more weight force downwards, making up for that lost weight force from the low traction, I'm not entirely sure exactly how to implement, and I'm not bothering to run the math on how much airflow is required to make up even say 200 lbs, but something like this might be sufficient,

any thoughts?

the rules specify that the Rover Wheels are the only thing allowed to provide "traction"
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Unread 03-01-2009, 21:39
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Re: How can we drive on this new floor?

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Originally Posted by Dracco1993 View Post
I still cant get it to be my signiture though.
after you do the colors, you have to get the "code" and put it in your signature....
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Unread 03-01-2009, 21:49
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Re: How can we drive on this new floor?

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Originally Posted by corpralchee View Post
What if your robot had two drive trains? One in the forward direction and one in perpendicular to the forward direction. You lifted one drive train to use the other. Kinda like the trucks that are made to drive on the road and railroad tracks.
This is something that Buzz (FRC175) has done to great success in the past. Look up some old video - it's pretty spectacular.
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Unread 03-01-2009, 21:58
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Re: How can we drive on this new floor?

Isn't using a fan to create a low pressure zone not considered a traction device? I doesn't directly contact the ground nor does it actually constitute any solid form of traction as it would rely on a limited power supply. Such a device could not be used continuously throughout the match (just an estimate, no supporting math) as it would deplete the battery and rob power to the wheels. This is, of course, dependent on your drive configuration (four wheel/two wheel drive) and other systems such as pneumatics. This would, however, be very useful for acceleration and cornering if it could be designed with minimal spin-up time.
On a separate note, is there a rule stating that we cannot use any sort if thrust based propulsion system and just mounting the wheels as unpowered casters? Such a device wouldn't even rely on traction at all...
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Unread 03-01-2009, 22:11
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Re: How can we drive on this new floor?

How effective would it be to use an accelerometer and a rotation sensor to not allow the wheels to go far beyond wheel slippage. You could maximize the traction with out spinning all over the place.
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Unread 03-01-2009, 22:20
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Re: How can we drive on this new floor?

Quote:
Isn't using a fan to create a low pressure zone not considered a traction device? I doesn't directly contact the ground nor does it actually constitute any solid form of traction as it would rely on a limited power supply. Such a device could not be used continuously throughout the match (just an estimate, no supporting math) as it would deplete the battery and rob power to the wheels. This is, of course, dependent on your drive configuration (four wheel/two wheel drive) and other systems such as pneumatics. This would, however, be very useful for acceleration and cornering if it could be designed with minimal spin-up time.
On a separate note, is there a rule stating that we cannot use any sort if thrust based propulsion system and just mounting the wheels as unpowered casters? Such a device wouldn't even rely on traction at all...
Is that low pressure zone intended to increase your traction/performance on the playing surface? If it does, then I would believe it would be defined as a form of traction enhancement. Contact does not matter.
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Unread 03-01-2009, 22:58
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Re: How can we drive on this new floor?

"fans" = shades of CanAm Chapparel 2Js. They only raced the one year way back... kinda funny to see shredded debris ejected by the two 45hp ducted fans though. Quickly banned as not fitting the FIA racing rules.
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Unread 03-01-2009, 23:42
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Re: How can we drive on this new floor?

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Originally Posted by Mike8519 View Post
Is that low pressure zone intended to increase your traction/performance on the playing surface? If it does, then I would believe it would be defined as a form of traction enhancement. Contact does not matter.
Think. If this were true, then weight could be "a form of traction enhancement", similar to any traction control ect. Meaning anything on the robot is outlawed, as it adds weight to increase traction.
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Unread 04-01-2009, 00:34
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Re: How can we drive on this new floor?

haha its like a car on ice...=D
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Unread 04-01-2009, 00:40
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Re: How can we drive on this new floor?

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Originally Posted by ScottX View Post
haha its like a car on ice...=D
Obviously you don't drive the robot.
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Unread 04-01-2009, 00:46
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Re: How can we drive on this new floor?

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Originally Posted by Enigma's puzzle View Post
Sorry to break it too you all but tank drive is going to be a pain, Tank drive has an axis of rotation around the center of the robot. BUT you have a trailer, you are going to be dragging the trailer wheels side ways it will be a battle.

Also the trailer anytime that you backup you will jack knife almost immediately, then you will be unable to control your backwards motion, turning with the trailer.
Hate to break it to you, but a lot of teams have some innovative programming planned. *hint hint* *wink wink*

There are always ways to work around obstacles...even if they're on the moon.
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Unread 04-01-2009, 00:49
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Re: How can we drive on this new floor?

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Originally Posted by Dracco1993 View Post
The siguniture still does not work. =(
Guys no back to back conversations in threads please. Either stay on topic or use something like AIM or the PM function.
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Unread 04-01-2009, 00:53
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Re: How can we drive on this new floor?

^ No double posting, theres an edit button for that
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