I getting ready to build a log arch and have been collecting plans and examples. Here is a pretty good one I thought people might be interested in.
http://www.motherearthnews.com/Mode...1/An-All-Purpose-Straddle-Wheeled-Hauler.aspx
http://www.motherearthnews.com/Mode...1/An-All-Purpose-Straddle-Wheeled-Hauler.aspx