Determine CG OF An Unknown Air frame (30% TOC Extreme Yak 54)

[AKfreak]

Hey guys I have a 30% TOC Extreme Yak 54, the company was TOC1 then Aviation Models, then I heard it became Pilot (but Pilot says nope) None the less, I don't have a manual for the plane. I want to get the right CG to start with so I need your help determining the correct location.

On a 35% E-TOC Yak 54 it is 8" from the leading edge at the root (so I have been told). Right now I am trying to set up battery locations and shave some weight so I need to know as much as I can about this plane.

Most of the planes I researched in the size have a AUW of 16 lbs, does that sound right to you?

Thanks for your help, AKf

 

[AKfreak]

Does anyone have some info on this plane?

 

[3DMad5]

Usually 3D planes balance around the wing spar. Failing that, between 25-33% of the wing chord back from the leading edge at the wing root is a more accurate way to find the CG.

If you want to get even more technical in finding the CG, trace one of your wings out on a large sheet of paper. Measure the length of the chord at the root, and add it on to the leading and trailing edges of the wingtip. Take the length of the wing chord at the root, and add that onto either side of the wing root. Connect the end of the line at the wingtips to the end of the lines at the roots diagonally. Where they cross is the Mean Aerodynamic Chord or MAC. 25-33% of the length of this back from the leading edge is the CG range. Check out the diagram for a visualisation.

 

[AKfreak]

Thanks bro. I looked all over the internet trying to find a manual or someone that actually owned one of these plane, but no go. I will do it the manual way. Thanks again, Akf