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View Full Version : PIC: 1902 Exploding Bacon proto type base

Doug Leppard
23-01-2009, 06:06
http://i699.photobucket.com/albums/vv354/dougleppard/photo.jpg

This is a working base we use.

What is it used for?
MrForbes
23-01-2009, 09:23
I don't know what you use it for, but it would be good for several things...towing a trailer around for your PS to practice, or testing different steering/drivetrain concepts, or showing off your throwing-things-together-and-making-them-work skills
Gabe Salas Jr.
23-01-2009, 09:25
I don't see any chains or drive systems.

There is a three wheel base (look at the shadow).

Dunno if there is a direct drive motor to the single wheel axle (looks like it can rotate at 360 degrees).

hmm...
MrForbes
23-01-2009, 09:27
It looks like there's a planetary transmission on the other side of the front wheel, which is mounted to the bottom of a lazy susan bearing.
Doug Leppard
23-01-2009, 09:31
Good guesses so far.

Hint:

Three wheel bot with all wheels fixed in forward direction, front wheel is driven wheel.
Brandon Holley
23-01-2009, 09:46
I also see non-rover wheels on that frame....HMMMM very interesting...
Rosiebotboss
23-01-2009, 09:51
You've probably thought about it already, but having the 2 non-driven wheels NOT Rover wheels will open you up possible issues at a Regional with the inspection team. I know a non-driven wheel used to gather data has been OK'd by the GDC in the Q&A Forums, but these are obviously weight bearing wheels and have increased traction thereby limiting the lateral stability.
Rizner
23-01-2009, 09:56
This is a working base we use.

What is it used for?

To prototype of course.
Enigma's puzzle
23-01-2009, 12:19
The front wheel is powered and from what i can tell it looks like it can pivot. It is possibly the turning wheel, so maybe you turn and propell with a single wheel on a lazy susan.
Doug Leppard
23-01-2009, 13:40
You've probably thought about it already, but having the 2 non-driven wheels NOT Rover wheels will open you up possible issues at a Regional with the inspection team. I know a non-driven wheel used to gather data has been OK'd by the GDC in the Q&A Forums, but these are obviously weight bearing wheels and have increased traction thereby limiting the lateral stability.

This is totally a proto type to test an important part of our drive system. Our competition bot will be a four wheel robot. Our competition robot will only have kit wheels used for traction and weight baring.

Ok this is what it us used for.

To test the Pig Traction Control (PTC). PTC is being designed to not allow the wheels to slip during acceleration and stopping.

The one wheel is driven to test the interaction without other three wheels interacting if it was on a four wheel robot.
Tom Line
23-01-2009, 13:44
If the front wheel is the only driven wheel, and it's 3 wheeled, I'm going to say that front wheel must pivot to turn. That leaves you with either ackerman, or crab steer. Since crab is really unneeded because you have no need to turn more then 180 degrees, I'm going to say ackerman via a linkage of some sort.

Are you concerned that with 3 wheels on the floor and only 1 being driven that you're giving up 66% of your frictional force?
DarkFlame145
24-01-2009, 12:17
If the front wheel is the only driven wheel, and it's 3 wheeled, I'm going to say that front wheel must pivot to turn. That leaves you with either ackerman, or crab steer. Since crab is really unneeded because you have no need to turn more then 180 degrees, I'm going to say ackerman via a linkage of some sort.

Are you concerned that with 3 wheels on the floor and only 1 being driven that you're giving up 66% of your frictional force?

I dont think it turns. It's a programing test platform for some nifty stuff we are working on.