Balance point on a flying wing??

A Zagi balances, IIRC, about 8 1/4" from the nose. However, not all wings have the same sweep and taper, and yours may differ. I think the Unicorn balances around 10" from the nose. Use TLAR and toss it a few times.

Morris

Around 25-30% of mean aerodynamic chord from the LE at center span is a good starting point.

Try this calculator to find the CG position for you:

Don't quote me on this (or anything else....), but I think that's a good rule of thumb for a conventional plane only ~ The guys at my field who have flying wings claim that the CG must be much farther forward than this.

Best advice I can offer is to find one that seems to work, (it just landed) and ask the owner if you can poke your fingers under it.

DC3

that's what I suspected as well which is why I asked the question. thanks.

MY son built one from depron and normal 30 percent showed up as real tail heavy. we wound up hanging the battery much further ahead than I thought it should be.

cheers Papa Sharptooth

Bouncing about the living room, my then three year old grandson declared himself "a kangaroo". "If you're a Kangaroo, what is Grampie", I ask. His reply:  "you a dinosaur"

You guys are right. I was unaware of this difference. I just ran the numbers from my son's Wingwarrior Raider(a 48" span Zagi clone). The recommended CG range comes out to be approximately 20-22% of MAC.

The info on this CG calculator: