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How to fix the lower blades of ModelArt 3.5 channel RC Helicopter

I have just bought this helicopter. And it was low on battery so I charged it, but not for so long, as I was very much eager to play with it. After sometime, the lower blade stopped rotating. I can rotate the blade myself though and its gear also does rotate when I do so. What may be problem? Is the motor for that is defective?

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One of the other gears in the blade have probably been broken if the blade has been held or stuck when trying to fly. Might need to replace gear.

Posted on May 08, 2014

  • Kakar Nyori
    Kakar Nyori May 08, 2014

    Thanks for the help. So, I disassembled it, and one of the motor (for the defective blade) gets very hot after a minute. But the other motor is not. Is the motor defective?

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: i have an apache 3 channel helicopter.the top

Same problem I had. There are two motors. One to spin the top blade and a second to spin the bottom. My motor was defective out of the box to spin the top blade. Very poor quality as my AH 64 had a bad circuit board. I had to take parts from one to fix the other.

Posted on Sep 12, 2009

  • 1 Answer

SOURCE: Yiboo AH-64 3D RC Mini Apache Helicopter

There is a small set screw on the bottom gear that holds in the upper shaft. You can see these gears through the belly of the helicopter. I had the same problem with the top rotors, and had to go in and re-insert the rotor shaft and tighten the set screw. I applied locktite to the threads to prevent it from backing out. It works now, but one problem I notice is that there must have been a spacer bushing between the two gear wheels. Without the bushing, it will still fly, but I can feel some play in the upper shaft and wonder if over time that the counter spinning gear wheels will start to wear against eachother.

Posted on Feb 10, 2010

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SOURCE: crashed blade 400 repaired it unsure of servo settings helicopter tilts forward and tends to spin around

dude is your swash plate levle if it is not it will cause your heli to drift
or if not go on youtube and reset your dx6i settings

Posted on Sep 29, 2009

  • 1 Answer

SOURCE: I have Brookstones silver bullet

Sometimes the metal weights fall out of the top rotating bar causing the blades to be out of balance and the bottom blade to hit the tail. Check to see if both the weights are in the top bar.

Posted on Jan 13, 2011

  • 1 Answer

SOURCE: Just bought a 9053 helicopter.

did you put all 8 of the batteries in it? it takes 8 AA batteries.

Posted on Jan 13, 2011

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