Dive Testing CG Position

Here's how to test your CG with a dive test.  This illustration has been floating around rcgroups approximately forever, so I thought I would capture it here.

It's pretty self explanatory.  Go into level flight, pulse the elevator down, and watch how the plane recovers.  "D" is where you want to be.




blogodex = {"idx" : ["flight tuning", "cog"]};

Power Off Dive Testing

Here's a nice diagram from RCG that shows how check your CG by testing how the plane recovers from a dive.

Flying wing CG calculator

Here's a nice CG calculator for flying wings.  I haven't tried it, but people are saying nice things about it on RCG.  I'm going to try it out with the Zephyr II measurements and see if it gets the same COG as Chris did.