This was taken from the plans on
www.xmodsrc.com. The only changes I made was to increase the pipe size to 3/4" and add couplings in the 10' sections to make every straight piece 5'. That way I can change the configuration, transport, and store the pieces away easier. I also added the cross piece (bridge) to sinify the start/finish line.
I plan on adding more bridges from the straight piece sticking out to make it more secure for when a car runs into them, they will not move. I also bought a bunch of extra material and plan on making it bigger, and create some new tracks.
Here is a link to the plans. You need Acrobat Reader to view them.
http://www.xmodsrc.com/tracks/track_03.pdf