pic: Final 2011 Drivetrain

[Joe Schornak]

I think that my design guide posted here still holds some excellent points for building a super-awesome machine!

I think that aluminum frame may be worth over $700-800 market value, which is going to violate <R14>, you'll want to check that.

[ratdude747]

Not this thread again

[MaxMax161]

I just found this thread and I would like to say it's completely wonderful.

The only suggestion I would make is since we all know more motors --> better robot you clearly need an 8 motor drive train. However I don't know if there's space for a traditional gearbox, have you thought about mounting extra motors to your motors so they spin while they spin?

[asid61]

I have to say, this was one of the funniest threads I have ever seen.
6 cims drives are also good too; if the OP is still around I would add that.
There's also 4 minicims available for moar acceleration.

[XaulZan11]

Originally Posted by SudoSammich

P.S. 2.2 seconds on the minibot? I remember seeing that a 5 lb minibot utilizing ALL the power from a tetrix motor (i.e. no loss in the system, which is just a wee bit impossible) would climb in 6.5 or so. Conservative estimates from that landed a competitive minibot at 7 seconds. It's entirely possible I'm not remembering the thread correctly, but 2.2 still seems a bit extreme.

Originally Posted by Brandon Holley

Gotta call shenanigans here...

You say it's averaging 2.2 seconds, which means in some cases it's actually going faster than that. Are you adhering to all the minibot requirements? Is the pole you are using for testing regulation size?

In our tests, and from my observations of other teams minibot postings, 2.2 seconds would be far, far, far and away the fastest minibot I've encountered. Considering A. the requirements that everyone must use to build the same minibot and B. the number of teams attempting the same challenge with said requirements, it seems unlikely that someone could build a minibot that is simply THAT far superior than any other.

As they say, pics (or in this case vids) or it didn't happen...

-Brando

Maybe he wasn't so crazy after all...

[Chris is me]

Originally Posted by XaulZan11

Maybe he wasn't so crazy after all...

Heh. For those of you that didn't compete in 2011, the fastest minibots of that year were at or just under 1 second from deploy to points. A 2.2 second minibot I would definitely consider "slow" by the end of the year.

[Andrew Schreiber]

Originally Posted by Chris is me

Heh. For those of you that didn't compete in 2011, the fastest minibots of that year were at or just under 1 second from deploy to points. A 2.2 second minibot I would definitely consider "slow" by the end of the year.

And yet... in the overwhelming majority of matches even a 2.2 second minibot would have won the race.

[cmrnpizzo14]

Originally Posted by Andrew Schreiber

And yet... in the overwhelming majority of matches even a 2.2 second minibot would have won the race.

*the match

[BBray_T1296]

The minibot I built climbed the pole in roughly 5 seconds, yet we lost only 1 quali match (in Dallas, our 2nd regional). Every time our bot TOUCHED the pole, it scored*. One match at Alamo, the minibot fell out of our poor holder, was RAN OVER by another robot, and I walked over to it post match, zero damage.



(* except when the battery cable was knocked out and we lost by 1 point in eliminations (grr im still mad))

[BBray_T1296]

Also, booooooooo to whoever ressurected this thread

[RoboChair]

Originally Posted by kenavt

For reference on team 3815:

Website: http://raiderrobotics.co.cc/.

Also for reference, this site seems to be redirecting to a porn hosting service currently.

[MaGiC_PiKaChU]

Originally Posted by poohbear

-the body is milled from a solid block of 7071 aluminum (with our sponsor's five axis mill) to retain the maximum structural strength.
-the wheels are decagons instead of circles. NOW can we squeeze in more than tangential contact every tenth of a rotation, therefore we get more traction.
-these four wheels are directly driven by CIMs so we can zip across the field at 154 fps according to JVN Design Calculator (great tool by the way guys).

My reaction when i saw this thread a few years ago

[BigBen]

[Taylor]

I blame BigJ.