24-02-2008 20:49

Re: pic: Team 34 - Ackerman Steering

That's sweeeeet. What are you using to power it? A globe?

24-02-2008 21:00

Ed Sparks

Re: pic: Team 34 - Ackerman Steering

Yep. A globe and a 4 to 1 worm drive gearbox.

24-02-2008 21:32

Re: pic: Team 34 - Ackerman Steering

Same thing we used, + a pot (I'm assuming you used one too). Except we didn't use a worm drive gearbox.

24-02-2008 22:02

kevin.li.rit

Re: pic: Team 34 - Ackerman Steering

And it was a 8:3 reduction out of the globe.

24-02-2008 22:06

Coach Norm

Re: pic: Team 34 - Ackerman Steering

Team 2468 is using a globe motor with Ackermann steering as well. We mounted a pot with a flexible shaft for feedback. Our steering mounts are racing go kart spindles with the KOP wheels with IFI tread mounted on them.
Give it a look at:

www.chaprobotics.blogspot.com

We can turn in a little over 5 foot turning radius.

24-02-2008 22:08

Josh Fox

Re: pic: Team 34 - Ackerman Steering

I'm very curious as to how this feels/performs from a driving standpoint vs. normal tank-style drive... anyone with experience?

24-02-2008 22:09

kevin.li.rit

Re: pic: Team 34 - Ackerman Steering

Not yet, but I'm about to find out since there isn't enough force on the back wheels to turn the bot in place. Maybe I'll keep you updated.

25-02-2008 10:48

Pjohn1959

Re: pic: Team 34 - Ackerman Steering

Another nifty design from Team 34. I like the steering concept. Should make you fast around the corners. Good luck at Peachtree and Bayou.

25-02-2008 11:12

Rickertsen2

Re: pic: Team 34 - Ackerman Steering

How do the controls work? Wheel and pedal? Is the steering rack control position based with closed loop? The Tie rod ball joints look swept back a bit. Was that to give you a higher Ackerman percentage?

25-02-2008 20:27

JulieB

Re: pic: Team 34 - Ackerman Steering

ED, So when are we going to see the whole robot.

25-02-2008 21:24

Josh Fox

Re: pic: Team 34 - Ackerman Steering

dont be afraid to pm me any details or just post here...
I'm very curious

25-02-2008 23:09

Mike Schreiber

Re: pic: Team 34 - Ackerman Steering

looks impressive, very nice job

I'm curious to see how ackerman will compare to tank, crab, and mekanum (sp?) this year, and who will come out on top, control and speed wise. I'm sure cornering will be easier for you guys depending on your controls of course.

Good luck in overdrive

26-02-2008 00:04

dbell

Re: pic: Team 34 - Ackerman Steering

I have driven this robot, which has Ackerman steering. To me it felt a lot like an RC car.
1519 uses a steering wheel to control their robot. (not sure what 34 is using) I thought it was more intuitive at first, than a tank style robot, but it takes as much practice to get good at it.

Very nice robot!!
I like the blue! I'm really looking forward to seeing the whole thing.

26-02-2008 00:13

Robotoer

Re: pic: Team 34 - Ackerman Steering

Team 1678 used a Van Door motor attached to a bar with potentiometers for ackerman steering. What kind of program/control system did you guys use to control steering? We were having some issues with making our system match its wheel angle to the angle of our steering wheel. Of course, I didn't know about PID loops until after we shipped the robot , but still, I am curious.

27-02-2008 09:28

Ed Sparks

Re: pic: Team 34 - Ackerman Steering

Sorry for the delay. I had to travel to Germany during the last week and even I didn't see the final version until it was posted on our website.

Team 34 Robot Page