stunthanger.com
General control line discussion => Open Forum => Topic started by: Mike Griffin on March 08, 2017, 03:40:53 PM
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I have seen some real sophisticated high brow complicated alignment jigs on here so I wanted to share mine. Although a degree in Trig or Calculus would be helpful, you can probably slide by on a few basic tools.
Mike
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Oh, one more picture.
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Some where on here a person showed using a Work Mate to align fuselage and wing. There are many ways of doing things as I just preglued a wing into my latest plane and my squares say it is better than the jig I used once. H^^
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No trig or calculus needed. Swanson speed square comes with a book of tables!
Thanks for posting pictures. These kind of pictures are helpful to many folks.
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I can't speak for any of the other people in the collective we, but I check and shim by desktop before I start aligning and assembling a model. y1 H^^
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It looks like having the wing and fuselage squared up is dependent on the table top being level. How do we know the table top is level?
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Take my word for it Rusty.... it is level.
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What, you guys don't have CMMs in your shops?
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Two large plastic triangles, a flat surface, a tape measure, an incidence meter and a good eye is all you need. As long as all work is done off the flat surface, level isn't required.
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I hope everyone realizes I was using tongue in cheek and kidding about the sophistication of setting a wing in a profile fuselage by using higher math. It really is not difficult to do this just by using some basic common tools. Your eyes are the greatest tool you have.
Mike
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There is a lesson here:
Know what your reference line is.
In this case because there is a bubble level and a square, the flat table and gravity are the references.
My old bench had a flat but non level table, I tried to use the Robart incidence meters and could never get them to work right , because the table was about 1/4 of a bubble off level.