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rudder trim

Old 01-12-2011, 04:09 AM
  #1  
vendo
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Default rudder trim

on the cx2 the adjustments for the pots in for the rudder,i cannot get it trimmed out i push trim to center it and it works for a sec then it goes the other way,then trim other way etc..al
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Old 01-17-2011, 03:27 PM
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exit44rc
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I believe that is because the CX2 does not have a heading lock gyro. That gyro is called a "rate gyro" and those drift a little. You can fix it completely by getting the 3-n-1 control unit for the CX3 and installing it in your CX2.
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Old 01-17-2011, 05:44 PM
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vendo
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yea and how much is that? i can turn down the gain on the gyro but it still wants to turn..
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Old 01-17-2011, 05:46 PM
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vendo
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i found it on ebay,looks like whats in my copter now..hmmm
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Old 01-17-2011, 07:24 PM
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exit44rc
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Yes, they look the same. The CX2 uses a 3-n-1 unit with this part number (EFLH1023) that is $40. The CX3 uses a 3-n-1 unit with this part number (EFLH2001) that is $45.

I had a CX2 a while back that I upgraded to the CX3 3-n-1 unit and truthfully i didn't notice that much of a difference. At that point I was pretty new into the hobby, though, so had I had more experience I may have been able to tell a bigger difference.
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Old 01-17-2011, 08:05 PM
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Heli Jim
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The tail trim tends to drift as the battery voltage drops.

If you finally get the gyro set right, you go from all trim one way to all the other way
during a flight. Just a trait of that heli.
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Old 01-17-2011, 09:46 PM
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vendo
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I fixed the toilet bowl effect,flybar to tight..so you have to keep on the tail rotor all the time..no fun to fly straight
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Old 05-11-2011, 02:20 AM
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anton831
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im curious did u get the upgrade
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Old 05-11-2011, 04:05 AM
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vendo
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nope didn't get it..was busy lately and weather stinks
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