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Old 01-26-2009 | 08:01 AM
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Tisoy909
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From: Redlands, CA
Default RE: Vanessa c.g. Rig: How to.

Hey guys I have a question, I'm trying to be certain that I am properly setting the C.G. on this KMP Corsair that I have just completed, I need opinions please (help!) My concern is that I may be off and wonder if you would suggest a vanessa for this job. The manual calls for C.G. at 130mm aft of the leading edge. I have always balanced my planes with the two dowel method so by going with what i'm used to, I made an amped up version to try and balance this Corsair at the curve of the gull wing. I have it sitting inverted such that when the model is on its called for factory c.g. point, the chord of the horizontal stab will be at 0 degrees to the floor or that is parallel with the floor. What feels disconcerting to me is that when I look at the model balanced on its called for C.G. and the Hori. Stab flat with the floor the fueslage in general appears as if its tail heavy(tail low). Perhaps this is just due to the shape and geometry of the Corsair but its enough to have me concerned. Here are images of how it looks on its factory called for 130mm cg and notice the overall appearance of the fuse relative to the surface of the table (appears tail low). I'm just worried if i'm possibly missing something here and have possibly a tail heavy condition. Any help and input will help me out a lot and I thank you in advance.
Louis

BTW: I measured the Main wing chord length at the root and got roughly 400 MM. So with the factory specified 130 MM c.g. point that I set the balancing line with on the tape, this came out to a 32.5% of max chord length. is this acceptable?

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