What drivetrain did you do?

[AJ R]

We went with an omni drive. 4 wheels on the 45 degree angles just like our vex robot from the Milwaukee vex league. It works really good, really fast and good maneuverability. The programmers did a great job getting it to drive strait.

[s_forbes]

We were seriously considering an Ackermann set up, but then our programers figured out how to make a 6wd robot drive like one, so we just built a 6wd bot.

We had fun designing it, too. We aimed for super simplicity: the frame is made of four lengths of c-channel, and the wheels sit on protruding bolts. Very light and easy to fix.

RWD (2 IFI 6x2 traction wheels) powered by 4 CIM's through toughboxes; Front steering (non-Ackermann, non-powered, kit wheels).

[Daniel_LaFleur]

4WD, skid steer, run by 4 Cims through Dewalt transmissions.

[PhilBot]

Soap-Box style steering X 2.

Two pivoting axles, linked with a cross-bar to provide high-speed staight-away and turning. Each axle has a pair of CIM motors, driving inline 3:1 Banebots Planetary gearboxes and custom made 4" diameter traction wheels.

Original tests showed that we could drive and steer JUST using differential speeds on the opposing wheels, but we ended up adding a dedicated steering motor with position feedback for Hybrid mode.


See video of the bot in action:
http://www.youtube.com/watch?v=JKdTJSR-KuU

[T3_1565]

we invented our own drive system! (you may of seen videos of it on other threads) It called "the Linkage" and it is 4 omnis set up like 4wd, that switch 90 degrees so they are also 4wd in a sideways orientation, giving us 4 motors of power in all 4 directions without the mechanical no how of a swerve drive!

[Greg Peshek]

We did a true Ackermann type steering, with a ATV differential in the back, powered by 4 CIMS running through a modified AM 2 Speed Transmission.

[Wayne TenBrink]

6-WD. Omni's on the front, 2007 kit wheels in the middle and back. Two CIM's per side. Zero drop on center wheels. One speed at 10 fps. Stable & strong. Easy to turn, but doesn't spin out on fast corners.

[JOhnch181]

we are driving a 4wd using super shifter with performance wheels in the front and a kit wheel back right and an omni on the left. turns slowly in low but takes the corner perfectly in high gear.

[Daniel Jones]

Team 190 is doing Man-Bear-Pig.

[Brandon Holley]

This is how 125 is rollin this year..

6 motors - 4 CIM, 2 Fish
6 WD - 4" 100% Custom wheels
Belt driven
14 fps