Tonight I was looking at my landing gear parts while Josiah was working on my wheels. When I explained to him that I was trying to determine the angles and how I might notch the tubing to fit, he says, "wait a minute... there is an easier way." He asked me for a few of the measurements... axle spacing, hinge points, etc., and from there he plugged in some numbers on the calculator to give me exact lengts and angles. He took that information home and e-mailed me 3-D drawings that included all the informarion I needed. He explained that I could use a tubing notching application to create an exact template of the notches I need to cut. I used a web based application at http://www.metalgeek.com/static/cope.pcgi It not only allows a wide range of tubing sizes and angles, but it allows offset and produces a properly scaled template in PDF format.
Awesome... this takes out one of the more intimidating aspects and also eliminates a LOT of guess work.