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Ive just finished flying my SSE AND IM HAVING DIFFICULTY balancing this airplane.From 3-1/2 from leading edge its still tail heavy.4" from leading edge still tail heavy added some weights to the nose still tail heavy and dosent want to land.Im using 46fx standard radio gear gp engine mount.This plane would not balance help

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Mine balanced perfect at 3 1/2" with .46FX
Is this an ARF or a kit? Where did you locate the battery?

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this is a ARF ,the battery is all the way forward under the fuel tank,but lots of problems balancing

Balancing
 

Kingtight,

Are you balancing it inverted as per instructions and using a balancing stand? I have a Saito 72 in mine and had to move the battery to the tail section to get it balanced.

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kingtight,
If you are balancing it inverted, battery up front, and doing everything else properly, there are serious problems with that plane. I would contact Sig directly.

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This is not an easy plane to balance. Mine would sit on the balancing stand and if you let the tail down a little it would fall back until the tail touched the table and if you pushed the nose past horizontal it would fall forward off the balancing stand. There is a very small distance from completely horizontal on the balancing stand and the plane will tilt one way are the other. If you will work from holding the plane on the balancing stand straight and level and see which way it wants to go then add a little weight and go back to holding it level and try again. You might be surprised how little it may take to balance it. I just worked on it until I could get it to remain level without holding it, but it would still go way off either way if you lightly pushed on the nose or tail. It flies perfect. I have an OS 46FX with the battery pushed under the servo tray all the way against the servos and the receiver pushed against the battery mine took 1/4 oz to balance, mine is the arf built as per the instructions. Hope this helps.
fossil

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I have to agree with Jammer. I've done 3 ARFs (don't ask) and all 3 were easy to balance. Battery under reciever, all the way back against the servos. It's about 4" back or so. If it's as bad as you say, there is a problem! I bet I've sold 20 poeple on this ARF over 2 years, all have been PERFECT!

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Fossil is exactly right.

I just put on an OS 50sx(replacing the OS 46FX) on my son's SE and when rebalancing had the same experience

c-ya