islandflyer
Posts: 518
Joined: 6/23/2004
From: Kaneohe,
HI, USA
Status: offline
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I think it is time to dispel the myth that there is a CG issue with this plane.
1- People use different engines, with different weights, and it is impossible to engineer a plane with a single CG that will satisfy every one (some like it nose heavy, others like it tail heavy).
2- Even if one likes it very tail heavy, it take only a SMALL amount of weight in the tail to balance for the DA-100.
3- Someone spoke here about the plane being nose heavy, and glued weight in the stab tube: from the video I saw, the plane now looks tail heavy, and this person later wanted a replacement stab tube to move the CG forward again.
Whenever a plane has a CG problem, it is in most cases a tail-heavy plane, which is also usually a heavy plane over all. When you have a 105" plane weighing 26 lbs with a DA-100, you have a light plane. By essence, a light plane is more subject to CG variations with different engines/servos/batteries being used. It also means that the CG adjustment can be done mostly with moving the electronic equipment front or back, and no additional weight is usually required.
Now if we take an extreme case of wanting a tail heavy plane, and you added 4oz of weight in the tail of a 26lbs plane, you still have a plane with a 105” wing span that weighs 26-1/4 lbs (still light for that size!).
With a CG at 6-1/2” back of the leading Edge, the 36% Edge is flying great, is fully capable of all the 3D maneuvers in the book, and requires no additional balancing weight.
< Message edited by islandflyer -- 3/31/2008 2:42:33 AM >
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Herve Lejeune
PAU
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All Forums >> RC Airplanes >> Giant Scale Aircraft - 3D & Aerobatic >> RE: PAU 36% Edge 540 Assembly 
RE: PAU 36% Edge 540 Assembly - 
Problem is I dont have a honer 
inspection i found a broken former right behind the cockpit area. this could have been done after shipping due to me gettibg this econd hand , But.... Anyways the former was cracked on both sides and there was no glue on the middle stringer joint so I was able to remove the piece that goes all the way across the bottom. After removal I found the former is made out of wood that is so weak and brittle I couldnt belive it!!!! this piece of wood is like a cracker! 
