01-16-2011 08:24 PM

Bjenks548

Re: pic: Magnetic traction

Nice mini bot idea

01-16-2011 08:29 PM

roborat

Re: pic: Magnetic traction

we were looking at the same ideal but with the wheels at an angle on the sides with something hanging below to keep it at the proper angle

01-16-2011 08:40 PM

Chris is me

Re: pic: Magnetic traction

Are you concerned that the magnet will take away from your wheel's traction? Or is the magnet not touching the pole- increasing the robot's downforce?

01-16-2011 09:02 PM

548swimmer

Re: pic: Magnetic traction

I'm not sure, but it seems like there's a minuscule gap between the magnet and the pole.

01-16-2011 09:04 PM

Richard Wallace

Re: pic: Magnetic traction

The steel pole is ferromagnetic, so a magnet will exert a pull toward it, aiding traction of the wheel(s).

Steel is also an electrical conductor, so electric potentials induced in it as a magnet moves will drive the flow of circulating current. Magnetic fields due to the circulating current will interact with those due to the magnet, developing a drag force that opposes the magnet's motion. So the steel pole acts as a brake on the magnet -- even if they don't touch.

01-16-2011 09:06 PM

billbo911

Re: pic: Magnetic traction

Quote:

Originally Posted by Chris is me Are you concerned that the magnet will take away from your wheel's traction? Or is the magnet not touching the pole- increasing the robot's downforce?

01-16-2011 09:19 PM

billbo911

Re: pic: Magnetic traction

Quote:

Originally Posted by Richard The steel pole is ferromagnetic, so a magnet will exert a pull toward it, aiding traction of the wheel(s). Steel is also an electrical conductor, so electric potentials induced in it as a magnet moves will drive the flow of circulating current. Magnetic fields due to the circulating current will interact with those due to the magnet, developing a drag force that opposes the magnet's motion. So the steel pole acts as a brake on the magnet -- even if they don't touch.

01-16-2011 10:43 PM

RoboDesigners

Re: pic: Magnetic traction

When I saw your picture/diagram, this was what came to mind...
http://www.vexforum.com/wiki/index.php/Magbot_Model_1