center of gravity

[rmang]

I have a 60 size sukohi arf I am putting together.
I have no plans or instruction book.
Is there a way to determine the center of gravity on this model?

[Mark R]

A lot of manufacturers have manuals online. Did you check their website yet?

[cosmicpossum]

Most (and I repeat MOST) planes center of gravity is 1/3 the wing cord back from the wing leading edge. In other words, if the wing cord is 9", you c/g for the plane should be at 3" back from the leading edge. (on the bulk of my kit-builds, this spot has proven to be directly under the main wing spar......but I'm a glider guy)

It's always safer to be a little nose-heavy, I'm sure you know.

[rmang]

I just emailed the Cermak, they made the kit.
I didn't see it on line. The kit is at least 5 years old.

[cosmicpossum]

Here's their phone 562.906.0808. Why not call?

[rmang]

Well, Cermark replied with their 90 size arf.
They said that they discontinued the 60 size years ago and have no info on the plane that I have.
I'll have to figure something out before I fly it.
I'll balance it at the main spar, if nothing else.
Thanks, everyone.