Hello new board!! my name is mark Calder, I'm the designer of the old Wren ultralight, I have a new Ultralight named the Robin that I am getting ready to cover. I put this Blog together that goes back a few yers, it covers all of the design and build of the Robin.
Please take a look and give me some feedback if you will. Eventually i will be selling plans. My near term goal however is to have the robin to next years Lakeland Airshow