I hate to bust in on a thread but, here is what we used to make our track in our back yard..We don't race trikes seeing that I'm the only one with one but, we race go-carts. We have 11 of them that we mess with. It's alot of fun and I even rolled mine over once and bent the hell out of the front spindle. Here's a few pics of the things we used to make the track
Just a plain old harrow rake that we pulled behind a quad
Heres a homemade rig that weighs close to 1,000 pounds that gets pulled behind an F250, and works pissa!!
There has since been some weight taken out of it...It's made out of about a 6 foot piece of I-BEAM, 3 brake drums from a city bus, which weighs close to 200 pounds a piece. And alot of boulders for added weight
And here are a few pics of the track
This track is a blast!