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keehun
26-02-2009, 22:07
Hello CD,

Just out of curiosity, has any team attempted to recreate car-like drivetrain?

Thanks,
Keehun
gorrilla
26-02-2009, 22:09
Hello CD,

Just out of curiosity, has any team attempted to recreate car-like drivetrain?

Thanks,
Keehun


you could try searching the Forums or Media(for pictures)or the White Papers that always helps me:;)


we almost did it this year, but decided to concentrate on our shooter and helix instead....
Justin Montois
26-02-2009, 22:13
I'm not sure if your asking for this year specifically but in general, it has been done.

What you are referring to is called Ackermann steering. Team 34 did it extremely well in 2008, Ill find a pic...

http://www.chiefdelphi.com/forums/showthread.php?t=65044

So yeah, its been done:) I'm sure people will post more, 34 just stuck out in my mind.
keehun
26-02-2009, 22:24
So, yes that is ackerman steering but how about full out differentials car-like torque shafts, etc?

34's seems good and simplistic!
I may embark on a summer project along with a few of other members and have some fun =]

keehun
Akash Rastogi
26-02-2009, 22:35
For this we once again turn to 34...


http://www.chiefdelphi.com/media/photos/30718
Bongle
26-02-2009, 22:38
So, yes that is ackerman steering but how about full out differentials car-like torque shafts, etc?

34's seems good and simplistic!
I may embark on a summer project along with a few of other members and have some fun =]

keehun

For stuff more like that, you'd probably want to look into competitive R/C car racing. You can spend weeks tuning suspensions, motors, gear ratios, and whatnot on those things.
keehun
26-02-2009, 22:51
Well it would be more useful if it could be applied during season..
And thank you guys for the excellent links!
MrForbes
26-02-2009, 23:39
look up 842's robot Carmen, she has individual front wheel steering and programmed differential rear drive.
bman
27-02-2009, 20:04
team 548 2008 robot
front and back ackerman rack and pinion system with a differential on each side
DONT MAKE YOUR OWN DIFF!!!!!!
you can use the hpi baja 5b model that is compact and tough. they run around 50 bucks a piece

http://www.rccaraction.com/Media/PublicationsArticle/images/RCCA_23_0708_009_img014.jpg
Chadius012
27-02-2009, 20:33
My team did a rear wheel car steering
congofast09
23-03-2009, 16:34
bedford 1023 has a crab and with a push of a button it straighens the rear crab modules and stears the front crabs like a car. It is very effective to have in open space when you are picking up orbit balls in the front intake.
Pjohn1959
24-03-2009, 07:56
Yes, we did the car steering. We have never attempted anything like this before. Our Drive person spent countless hours in tweaking the system until it was solid. It was very effective in turning in Oklahoma City. It has one cim driving the rear two wheels, and one cim per front wheel. The cim and transmission both turn in unison.

Hopefully with the changes we are making to the top of the robot, it will be a more effective scorer.
tubeheaD37
24-03-2009, 08:39
Does anyone know if anyone has tried doing the differential in software?

Maybe its just because I am a software guy, but since my team has a motor per wheel on our swerve drive for traction control reasons it seems like that would be much easier pull off.