formula for finding CG on planes
 

hello all and thank you in advance for the help. i have been told that there is a formula for figuring out where the CG of a plane should be and i cant seem to find it anywhere. does anyone know what i am talking about ? and where i might be able to find it ? i have 2 planes i need to use it with before i can fly them, again thanks for your time.

mitch

formula for finding CG on planes
 

Yep, the rule of thumb to start with is 25%-30% of the wing chord. Of course various wings may be different, but on trainers the CG is usually around the location of the wing spars.

Jerry

Re: formula for finding CG on planes
 

Try this link, It should help!
http://www.geistware.com/rcmodeling/cg_calc.htm

formula for finding CG on planes
 

another old trick and it seems to work great is the string plum bob
method pick the plane up with a string one end on the crank shaft one end on the verticle stab(say thru a hinge) now take this
and hang it up by this now one piece of string like a hook in the cieling move the string back and forth until the plane is level like in flight then hang a plum bob from the hook it will piont to where the cg is surpose to be.

roy

CG
 

But always remember. " A nose heavy plane flies poorly, but a tail heavy plane flies once".


Just my Monkey wrench


Don//