how important is the,
#1
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From: Fenton, MO
bend in the wing?
In the center of the four star there is a piece off wood that is bent just a little, If the wing doesnt bend will it affect the flyin ability,
Im wondering because my "mods" have sorta ruined that. please help asap
In the center of the four star there is a piece off wood that is bent just a little, If the wing doesnt bend will it affect the flyin ability,
Im wondering because my "mods" have sorta ruined that. please help asap
#2

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From: Federal Way,
WA
The bend in the wing, also known as dihedral affects the stability of the airplane. If you look at a trainer, it'll have quite a bit of dihedral. Look at an aerobat, and you'll see that it has little or none. I don't think your going to be in any real big trouble if it's off by a little.
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From: Johns Creek,
GA
I actually cut the wing of my LT-40 in half and made it flat.... very fun to fly..... level flight is about the same, but much easier rolls and inverts....
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From: Locust Grove,
GA
THE plane will still fly. It just wil not be as stable as it was before.
Many planes have no dihedral (bend).
They are built to have neutral stability.
Many planes have no dihedral (bend).
They are built to have neutral stability.
ORIGINAL: nitrobasher
bend in the wing?
In the center of the four star there is a piece off wood that is bent just a little, If the wing doesnt bend will it affect the flyin ability,
Im wondering because my "mods" have sorta ruined that. please help asap
bend in the wing?
In the center of the four star there is a piece off wood that is bent just a little, If the wing doesnt bend will it affect the flyin ability,
Im wondering because my "mods" have sorta ruined that. please help asap
#7

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Nitrobasher, bottom line is your plane will be OK.
Most people throw the word "stability" around because it sounds great, but most don't have much knowledge about the subject. In a full scale plane that you are flying from point A to point B, we don't want to work a lot so we like a lot of dihedral for positive roll stability. A modeler would probably call this having roll stablility.
In our older RC trainers and in some 3-channel trainers like the big Kadet, they had enough dihedral so you could release the sticks in an unusual attidute and the plane would recover itself. New 4-channel trainers with ailerons will do this to some extent, but I would not rely on it to save my plane.
In an aerobatic or sport plane, most of us would rather have the plane "go where you point it." This ability of holding a bank would be neutral roll stability. Modelers would probably call it as being not roll stable.
What dihedral is used for in low wing acro/sport planes is not to keep the wings level, but to counter the adverse roll when you put in rudder. A low wing location, anhedral and sweep forward cause the plane to roll opposite to the applied rudder. Dihedral, a high wing location and sweep back cause the plane to roll in the direction of the rudder. So when a designer builds a low wing plane, he normally puts in some dihedral to counter the low wing location.
If your 4-Star has a fairly flat wing, it will probably have a slight opposite roll when you apply rudder in flight. You can try this. Fly straight and level and slowly put in some rudder like you were trying to do a flat turn. The plane will skid in that direction, but start a slow roll to the outside of the turn. It's nothing violent and a little aileron will correct it.
If you want to try to correct for this, and it may not be enough to bother with, you can mod your wing tips. You know the plastic wing tips some trainers have that are beveled upwards about 45 degrees from the bottom? You need top make some like these and put them on your wing tips. These add dihedral effect. I would tack glue them on or use a couple of screws as you may need to adjust the angle slightly.
Most people throw the word "stability" around because it sounds great, but most don't have much knowledge about the subject. In a full scale plane that you are flying from point A to point B, we don't want to work a lot so we like a lot of dihedral for positive roll stability. A modeler would probably call this having roll stablility.
In our older RC trainers and in some 3-channel trainers like the big Kadet, they had enough dihedral so you could release the sticks in an unusual attidute and the plane would recover itself. New 4-channel trainers with ailerons will do this to some extent, but I would not rely on it to save my plane.
In an aerobatic or sport plane, most of us would rather have the plane "go where you point it." This ability of holding a bank would be neutral roll stability. Modelers would probably call it as being not roll stable.
What dihedral is used for in low wing acro/sport planes is not to keep the wings level, but to counter the adverse roll when you put in rudder. A low wing location, anhedral and sweep forward cause the plane to roll opposite to the applied rudder. Dihedral, a high wing location and sweep back cause the plane to roll in the direction of the rudder. So when a designer builds a low wing plane, he normally puts in some dihedral to counter the low wing location.
If your 4-Star has a fairly flat wing, it will probably have a slight opposite roll when you apply rudder in flight. You can try this. Fly straight and level and slowly put in some rudder like you were trying to do a flat turn. The plane will skid in that direction, but start a slow roll to the outside of the turn. It's nothing violent and a little aileron will correct it.
If you want to try to correct for this, and it may not be enough to bother with, you can mod your wing tips. You know the plastic wing tips some trainers have that are beveled upwards about 45 degrees from the bottom? You need top make some like these and put them on your wing tips. These add dihedral effect. I would tack glue them on or use a couple of screws as you may need to adjust the angle slightly.
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From: Fenton, MO
Thanx guys, espeacily ed that really helped me out.
So I guess this will just make it easier to move on to another plane huh. again thanx for the help I just wanted to make sure befor i coverd it
So I guess this will just make it easier to move on to another plane huh. again thanx for the help I just wanted to make sure befor i coverd it



