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Old 10-18-2011 | 08:28 PM
  #5  
VerneK
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From: Livonia, MI
Default RE: Integral CG question

Hi Randy,
I built and competed with three different Integrals. I found the CG to be best at the leading edge of the wing tube or slightly rearward of that (approximately 1/8"). I would suggest raising the wing incidence from where it's at (slightly negative) to 1/2 degree positive. It also has over 2 degrees down thrust and I changed that to 1/2 degree down. Finally, a liitle more right thrust (about 1/2 to 1 degree) will eliminate the drift to the left at the top of tall verticals. I realize that's a bit of work, but it's well worth it. Just placing the CG where I suggested without the other adjustments will get you started on the right track. Making all the adjustments will result in an awesome flying plane. BTW, I left the stab as it came and called that 0 degrees. All the other adjustments are referenced to that. Hope this helps!

Verne Koester


ORIGINAL: desertrider49

Hi

I'm at the balance stage of assembling my Integral and here is my delima.

The manual says the CG is 205mm from the leading edge, which is aft of the wing tube. To get it to balance there, the batteries have to be way back, almost over the wing tube, which dosn't seem correct to me.

If I balance at the middle of the wing tube (which is about 180+/- mm) the batteries end up in a ''normal position'' over the landing gear, ''normal'' being described as observations at the field.

Jarvis, Woodie, Steve, or anyone, please give me guidance.

Thanks,
Randy