Cg location of Miss America old timer (circa 1936)

Cg location of Miss America old timer (circa 1936)

Post by Lsul » Mon, 15 Feb 1999 04:00:00



I'm building a Miss America from a short kit. The plans and instructions are
copies of the originals and the instructions are barely readable. I can make
out the the first try at the CG location is no more than 4" behind the leading
edge. The text then becomes unreadable, but it seems that the final location is
determined by trial and error.

Does any one out there have experience with this 84" old timer, and knows where
the CG is really located?

I'd appreachafe any smarts.

Thanx,


,  

 
 
 

Cg location of Miss America old timer (circa 1936)

Post by David Larki » Tue, 16 Feb 1999 04:00:00


Quote:

> I'm building a Miss America from a short kit. The plans and instructions are
> copies of the originals and the instructions are barely readable. I can make
> out the the first try at the CG location is no more than 4" behind the leading
> edge. The text then becomes unreadable, but it seems that the final location is
> determined by trial and error.

> Does any one out there have experience with this 84" old timer, and knows where
> the CG is really located?

> I'd appreachafe any smarts.

> Thanx,


> ,

It's usually quite safe to start with a 33% back along the chord C of
G for this type of aircraft, perhaps a little further back if there is
a lifting tail.  But if you are building for R/C with elevator control
it isn't the big deal it is for free flight where you need to play
with the C of G position and the stab incidence to control the climb
under (relatively) high power.  So go with the stated 4 inch point and
don't worry if it comes out further ahead of that.  If you need to
play with the elevator trim a lot, then you need to do something about
it.

Best regards

Dave Larkin
MAAC 3577L