Don’t go changing drivetrain names because of us. :] Butterfly will always have drop down omnis to me.
My signature has been the same for a number of years. I’ve been calling our drivetrain this year “4 Omni Wheels” which I think has a certain honest ring to it.
If I had to change it though, it would be “Greased Pig Drive” which is what our team compared it to throughout the season. You can push it around but you can’t pin it down.
Cheers, Bryan
I’ve played a lot of defense and I never thought an all 4 omni drive would be so hard to stay on! You guys really made finals on Archimedes interesting:rolleyes: kudos for driving it like you stole it!
I’m a junior as well as our AUX driver and our human player is a sophomore so well be together next year as well!
Is there any historical data for this subject (Einstein Drivetrains)? I’d be interested to see how many non-tank style drives have made it to Einstein in the past.
+1. I would like to know this as well.
1678 ran with a 0.090 drop center and 6 cim WCD with high gear of 22fps(20 attainable) and 8 fps low gear.
I really think that “butterfly” is a better name for these actuating drives. It gives a better idea of the characteristics of the drive in that it suggests quick fluttering movement. I know the original reason for naming it “butterfly” has nothing to do with that, but it works regardless.
In addition to that, “Tex Coast” makes it sound like some kind of variation on West Coast which it most certainly isn’t. KOP drop center and WCD are similar in comparison to actuating drives and it follows that actuating drives should have a distinct name. Honestly I think that an actuating drive with Mechanums should also be under the class of “Butterfly” simply for nominal organization purposes. It is very convenient and efficient to refer to all actuating drives with one name and then further qualify them with what kind of wheels are in there. “Octocanum” is incredibly misleading.
Sorry to derail the thread, all these different names makes it very difficult for someone curious about different designs to actually learn about them.
As best as I can recall
Swerve drives on Einstein:
16 (2008, 2012)
67 (2005)
71 (2007)
111 (2003, 2009)
148 (2008)
1625 (2010)
1640 (2013, 2014)
2481 (2014)
File-card drive on Einstein:
71 (2002)
Drivetrains with drop-down wheel sets (“slide,” “butterfly,” etc.)
51 (2011)
148 (2013)
175?? (They have used these in the past, not sure if they did between 2003-2005)
Skid steer (tank) drives on Einstein:
Everyone else
Why can’t people just let Texas do its own thing…
My personal Favorite -
What is file card drive?
Ahh yes I remember hearing about that. Great idea.
Here’s a list of championships winners’ drivetrains from the beginning of time. (Taken mostly from this thread, in particular Jared Russell’s post http://www.chiefdelphi.com/forums/showthread.php?t=77412 )
I’m on my way to lunch and I don’t particularly have time to fill in 2012 through 2014 (and I don’t know some of the newer ones since I haven’t really been on a team in a few years), but I’m sure it can be done quickly by the people in the CD community. Please also correct any inaccuracies.
2014
254 -
469 -
2848 -
74 -
2013
1477 -
619 -
1241 -
2012
16 -
180 -
25 -
2011
254 - 6 WD long
111 - 6 WD long
973 -6 WD long
2010
67 – 8 WD long
177 – 8 WD long (articulated is sets of two, front and back)
294 - 6WD long
2009
67 - 6WD wide
111 - 4 wheel crab (non-coaxial), wide
971 - 6WD wide
2008
1114 - 6WD long
217 - 6WD long
148 - three-wheeled crab (coaxial), nonagon-shaped robot
2007
177 - 6WD long
987 - 6WD long
190 - 6WD long
2006
217 - 6WD long
522 - Treads, long
296 - 2WD long, Omnis in front
2005
67 - three-wheeled crab (non-coaxial). Flop bot.
330 - 6WD long
503 – 4WD long, omniwheels in rear
2004
71 - 4WD long
494 - 4WD long
435 - 2WD long, with casters in front
2003
111 - Four-wheeled non-coaxial crab (with dropdown skid for turning)
469 – 4WD Long
65 - 4WD Wide
2002
71 - 4WD flop bot with casters in front
173 - 4WD long
66 – 4WD long
2001
71 - ?
294 - ?
125 - ?
365 - ?
279 - ?
2000
255 - ?
232 - ?
25 - ?
1999
176 - 4WD long w/ Omnis in front
1 - tank treads, long
48 – 4WD, long
1998
45 – 4WD long with Omnis in front.
1997
71 - ?
1996
73 - ?
1995
100 - ?
1994
144 - ?
1993
148 - ?
1992
126 - ?
That’s not even remotely representative of how they actually used that drivetrain in competition. The factor that set it apart was the file cards on the “front” of the flop bot, that they used to “walk” downfield (once they acquired the goals) to give them incredible traction and pushing power, at the expense of the ability to steer their robot.
1126 had 4wd, with 12" omni’s on the front in 2004. According to shaun on 25, the only omni wheeled robot to go undefeated at the division level and hit einstein.
2014
254 - 6WD Square
469 - Looked like 6WD square, unconfirmed
2848 - 6WD Square
74 - ???
2013
1477 - 6WD slightly long
610 - 6WD Square
1241 - 6WD Square
2012
16 - Swerve
180 - 6WD wide
25 - 6WD long
74 is 4 CIM 6wd wide
469 was 8WD square (or close to it) with 6 CIMs.