RCU Forums - View Single Post - CG formula for 1/4 scale constant chord?????
Thread: CG formula for 1/4 scale constant chord?????
View Single Post
Old 05-28-2002 | 10:18 AM
  #1  
aibear
Junior Member
My Feedback: (5)
 
Joined: Mar 2002
Posts: 25
Likes: 0
Received 0 Likes on 0 Posts
From: Theresa, NY
Default CG formula for 1/4 scale constant chord?????
I'm setting up a Rearwin Speedster ARF - 100" WS, 15#. The instructions are calling for the CG to be:
"The Center of Gravity is located 20 - 25% of the mean chord."
The wing has a constant chord of 16". Using their formula puts it at 3-1/4" to 4". I don't remember for sure, but it seems to me that the standard formula calls for 33% mean chord as a starting CG, which would put it 5-1/4". If that's right and i can't remember for sure , that's a very big difference.

Can anyone tell me what the formula is?

Much appreciated!!!
aibear is offline  
Reply Like