RE: CG position question.
Find the spar.<div>
</div><div>Balance it at the leading edge of said spar.</div><div>
</div><div>Go fly.</div><div>
</div><div>What you'll get, for any traditionally configured monoplane ever made, is an airplane that will fly safely, and land safely. You may, of course, prefer a different CG (probably more aft) location as you move forward, but a "LE of the main spar' will get the airplane airborne without any scary stuff, and let you work from there. </div><div>
</div><div>FWIW, Bipes also have a "safe starting point".</div><div>
</div><div>Find where the cabane struts attach to the top wing. </div><div>
</div><div>Select the point in the middle, between the leading and trailign attach points. </div><div>
</div><div>Balance the plane there, go fly.</div><div>
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