question about trail building

shad0

New Member
Jul 16, 2008
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I am thinking about building a small jr mx style course on my side yard. i have the basics of the course design down, but as i've never built a course before, i am wondering how to judge spacing on doubles and whatnot.
 
its really just trial and error...

I just build a jump at a friends house to find out it was 20ft to small....

so it started out as a 15ft double... and is now a 40 foot double.... lol