CG Projection from tip to fuse
04-15-2008, 02:44 AM
#1
Thread Starter
My Feedback: (62)
Join Date: Dec 2001
Location: Vineland,
NJ
Posts: 3,856
Likes: 0
Received 0 Likes
on
0 Posts
CG Projection from tip to fuse
Since the root is much wider than the tip, and most CG''s are quoted at the tips, what do you guys do if you want it
cg the plane at the root?
In other words, how can I be sure that my tip mark is accurate once it gets all the way across the wing?
Thanks
Bob
cg the plane at the root?
In other words, how can I be sure that my tip mark is accurate once it gets all the way across the wing?
Thanks
Bob
04-15-2008, 12:11 PM
#6
Senior Member
My Feedback: (17)
Join Date: Apr 2005
Location: Tracy,
CA
Posts: 296
Likes: 0
Received 0 Likes
on
0 Posts
RE: CG Projection from tip to fuse
When shown on the drawings for a plane, or when stated as a distance from some fixed point, the CG of a plane is a representation of a line (or axis) passing perpendicular to the centerline of the fuselage. In other words if you jammed a stick through the fuselage at that point, the model would balance no matter where you held the stick.
04-15-2008, 12:48 PM
#8
Thread Starter
My Feedback: (62)
Join Date: Dec 2001
Location: Vineland,
NJ
Posts: 3,856
Likes: 0
Received 0 Likes
on
0 Posts
RE: CG Projection from tip to fuse
I can''t measure at the root because the planes I have all take the measuremant at the tips, and I don''t like to balance at the tips holding the wings.
04-15-2008, 01:42 PM
#9
My Feedback: (16)
Join Date: Jun 2002
Location: Surrey,
BC, CANADA
Posts: 840
Likes: 0
Received 0 Likes
on
0 Posts
RE: CG Projection from tip to fuse
Step 1...mark your measurements at your wing tips
Step 2...slide the wings halves onto the wing tube
Step 3...place wings on a level surface
Step 4...tape a piece of string over the mark on wing A and stretch it across the wings to the mark on wing B and tape it in place
Step 5...make a mark on the wing at the wing root where the string is located, that is now your CG location at the wing root
Step 6...Place wings on plane and then use the new marks at the wing roots as your CG point to balance
Step 7...balance plane as needed trying not to add weight, just move components around until you can get it to balance
Step 2...slide the wings halves onto the wing tube
Step 3...place wings on a level surface
Step 4...tape a piece of string over the mark on wing A and stretch it across the wings to the mark on wing B and tape it in place
Step 5...make a mark on the wing at the wing root where the string is located, that is now your CG location at the wing root
Step 6...Place wings on plane and then use the new marks at the wing roots as your CG point to balance
Step 7...balance plane as needed trying not to add weight, just move components around until you can get it to balance
04-16-2008, 09:00 AM
#12
RE: CG Projection from tip to fuse
ORIGINAL: Hooked-On-RC
Step 1...mark your measurements at your wing tips
Step 2...slide the wings halves onto the wing tube
Step 3...place wings on a level surface
Step 4...tape a piece of string over the mark on wing A and stretch it across the wings to the mark on wing B and tape it in place
Step 5...make a mark on the wing at the wing root where the string is located, that is now your CG location at the wing root
Step 6...Place wings on plane and then use the new marks at the wing roots as your CG point to balance
Step 7...balance plane as needed trying not to add weight, just move components around until you can get it to balance
Step 1...mark your measurements at your wing tips
Step 2...slide the wings halves onto the wing tube
Step 3...place wings on a level surface
Step 4...tape a piece of string over the mark on wing A and stretch it across the wings to the mark on wing B and tape it in place
Step 5...make a mark on the wing at the wing root where the string is located, that is now your CG location at the wing root
Step 6...Place wings on plane and then use the new marks at the wing roots as your CG point to balance
Step 7...balance plane as needed trying not to add weight, just move components around until you can get it to balance
