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Thread: northstar cg

  1. #1

    Join Date
    Apr 2005
    winkler, MB, CANADA
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    northstar cg

    Im almost done building my northstar, and I want to check the cg. I check it when it's inverted, right? thanks

  2. #2

    RE: northstar cg


    >>Danger- engineering content<<<

    The actual center of MASS is a little higher than the chord-line of the wing. if you balance upside-down, it will have more of a chance to pendulum and hang from the balance point. Right-side up, it's slightly more stable than balancing a vertical baseball bat on your fingertip. difficult up, easy down.

    This is true of any low-wing plane.

    If it STILL is hard to get a real reading, hang it by almost any point on the wing. a line straight down from your hang-point will cross the center of mass. Then hang it from a different point. A line straight down from THAT attach point will also pass through the center of mass. Where the lines cross is the center of mass.
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    Jim Casey/Seaplane Nerd

  3. #3
    MinnFlyer's Avatar
    Join Date
    Apr 2002
    Willmar, MN

    RE: northstar cg

    Thanks for the warning Jim, I hadn't had coffee yet!
    Mike B. AMA# 42400
    Ultra Sport Brotherhood #2 - Waco Brother #188 - Cub Brother #2

    \"Those are my principles. If you don’t like them, I have others.\" - Groucho Marx

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