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#16
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
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-dave |
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#17
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
http://www.invisiblerobot.com/roboti.../p1010464.html
http://www.invisiblerobot.com/roboti.../p1010469.html Those two pictures show some of the design shots of the drive system, hopefully giving a bit better idea of what we did. In simple terms, its a normal holonomic drive tilted on it's side. *edit* http://www.firstrobotics.uwaterloo....vetrains022.jpg Although it's only an external view, 33's 4 speed, shift on the fly, automatic transmission last year kicked butt.*edit* Last edited by Mike Schroeder : 30-05-2005 at 21:26. Reason: Merge Posts |
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#18
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
Not far away from team 116, Team 612 worked on their Aukerman Steering Drive System.
Unfortunatly, only 2 days beofre the ship date, Team 612 end up breaking some of the major parts of the drive system during the DC scrimmage clash. Its kind of sad story. Team 612 worked all six weeks wokring on this drive system, and then they have to switch back to tank drive within 48 hours of time span. |
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#19
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
Hi;
Couple of questions for you; why the 82 degrees (I have some ideas, by why speculate)? The second is how did you control it? We went with an orthogonal holonomic drive this year, but discovered the unfortunate fact that 3 points define a plane, but 4 are over-constrained. Which is to say every time we hit an uneven spot in the floor whoever had the traction won and the robot went in that direction. We solved it in two ways, first added a yaw sensor so at least it knew what a straight line was, and then added a suspension so that all wheels maintained traction. This design looks even more interesting because it is inscribing arcs; at least ours was in a vector. Thanks. |
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#20
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
I'm very surprised that no one has mentioned 47's swerve drive from the year 2000. It was, at the time, revolutionary. By todays standards, it may not seem all that cool, but 5 years ago, when it was one of the first strafing robots in FIRST, it was really something else. It gave 47 a clear advantage that year and served as the inspiration to many future swerve drives. It was well before my time coming to FIRST but I'm still inspired.
My thanks for FIRST Mechanism library for the pics |
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#21
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
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We had some issues with wheels getting more traction than others, especially when we we're driving on and off the loading zones. But we solved it by "shimming" the wheels so all four we're completly co-planar with the floor, and by using the white neoprene wheels. |
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#22
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
I like 71 in 2002, 111, 25, 16, and 65 in 2003, 111, I forgot what team number it was (im saddend now) but at detroit that had three front wheels that spun at one point, 65, and 2005 i liked 79, 71, 111, and once again 65. I love our drivetrain.
2003 111: http://www.wildstang.org/gallery/view_photo.php?full=1&set_albumName=2003_electrica l&id=2003_02_01_Electrical_005 http://www.wildstang.org/gallery/view_photo.php?set_albumName=2003_electrical&id=20 03_02_01_Electrical_011 25: http://firstrobotics.net/03gallery/i...0025-1_jpg.jpg 16: http://firstrobotics.net/03gallery/i...0016-1_jpg.jpg 65: if you seen this years drive trainf, picture that but faster and cool wheels 2004 111: http://www.wildstang.org/main/video.php that video should explain it ???: urg what was that team number 65: I have noticed that we have no pictures of our robots it past years any where to be found. I want to change that. 2005 65: finally http://www.chiefdelphi.com/forums/pictures.php?s=&action=single&picid=11238&directio n=DESC&sort=date&perrow=4&trows=10&quiet=Verbose 79: http://krunch79.com/gallery/displayi...?album=7&pos=8 http://krunch79.com/gallery/displayi...?album=7&pos=7 71: i con't find any good pictures of them 111: http://www.wildstang.org/gallery/view_photo.php?full=1&set_albumName=2005_NBC_Demo& id=IMG_2493 |
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#23
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
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#24
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
This year, what we did is we set all of our 4 omniwheels in the corner of our bot and set them at 45 degres. This allowed us to be able to strafe and spin in place and spin while moving forward. I think we had 8 ft per second.
We were the team that spun in circles for 2 matches on the Newton Field this year. We also had a piston in the middle of the robot that pushed down which cause all of our drive modules to expand. It gave us 4 inches on each side. This helped us with out stability. We used field forward, and the fact that there were so many factors that affected our compass, we had to turn to robot forward, and this caused us to be bad at controlling our robot. But overall, it was cool |
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#25
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At nationals there was the coolest drivetrain i have ever seen. I think it was teem 738 or 278 or 378, I don't remember. they were in Newton and their colors were yellow and purple. They made their own wheel system and they called it Jester Drive. It was really called Mechanum Drive, some brilliant swedish design. It allowed the robot to go in every direction depending upon how the wheels turned. It was the coolest thing i had ever seen...way cooler than omni wheels or tracks or 6wd or anything i had ever seen. You guys know who you are...it was insane. |
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#26
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
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Holonomic drives, such as 1002's, and 116's. or kiwi drives like 857's also can drive in any direction instantly. Last edited by Lil' Lavery : 01-06-2005 at 22:08. |
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#27
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
Can some one please explain Kiwi Drive?
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#28
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
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http://stuweb.ee.mtu.edu/~alkrajew/FIRST/kiwi.mpg http://www.team229.org/site/video/11...kiwiparody.wmv |
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#29
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
56k+ Online Videos = No Solution lol Thanks though
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#30
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Re: Most Impressive/Advanced/Unique/Cool drivetrain you've ever seen
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