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My mini rc helicopter lands in a few seconds of flying time. So I decided to replace the battery(because I thought it is a battery problem). After replacing the battery, problem is not solved. Helicop

I replaced the battery and tried, but problem is still there.

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Some of those mini helicopters are just designed bad. Their motor is to weak, the whole setup battery-speed controller-motor-blades is slapped together "hoping it will work". The quality is ridiculous. One heli or one from a certain batch would fly descent, others woudl barely lift of and drop down after a few seconds. The best solution is to return it to the store and by something for more money. But if you want to experiment:
1) Try reducing weight: remove anything that is not necessary off of it. Also, try smaller/lighter battery with same voltage and current rating (smaller capacity=lighter)
2) Try slightly higher voltage. I.e., if it uses NiCD/NIMH batteries, add additional cell. With LiPo's it's a bit complicated, if heli is running of one cell (3.7V) adding another cell will burn it. If it is 2 cells, trying 3 cells might work or might overheat the motor.
3) Try replacing the motor with slightly stronger one. Now you will need to search online, ebay, hobby stores for similar size that you can fit in. Not the easiest thing to do.
4) Again, get rid o fit. it's not worth your time, unless you like to experiment. It will never fly the way you would like it to.

Posted on Nov 30, 2014

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Posted on Jan 02, 2017

micromend
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SOURCE: my rc helicopter can not fly it spin in floor

Hi
This type of helicopter uses a fixed pitch blade. Have you recently replaced one or all the blades? If the blades are correctly positioned then once the motor comes to speed, the pitch of the blade creates enough lift to overcome the force of gravity. The problem you're having can only be that the motor is not coming to speed or the blades have been replaced but the pitch is now at the wrong angle.

Posted on May 13, 2010

SOURCE: heli max hicro helicopter just keeps spinning in circles

Spinning is caused by one of the main propellers rotating faster than the other. If both propellers are secured tightly to their drive shafts, the spin control knob on the remote control can be used to stop the spin. However, if one prop is slipping with respect to the other, the spin control knob will not fix the problem.
I've found that the set screws holding the propellers to the drive shafts tend to loosen after a while. If one prop is a bit loose and the other is tight, the relative slippage will cause the helicopter to spin.
To check, turn off helicopter power and manually rotate each propeller separately, watching the nylon gears in the body. If the propeller is moving and its drive shaft gear isn't, the propeller is slipping because its set screws are not applying enough pressure on the propeller's drive shaft.
Carefully tighten the set screw and the problem should be fixed. DON'T OVERTIGHTEN, or the plastic threads for the set screw will be stripped and the propeller assembly will be ruined.

Posted on Apr 23, 2010

  • 1 Answer

SOURCE: my rc helicopter wont fly high?

flew at first hit sealing won,t fly now hit the trim button,s but still wont fly

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SOURCE: i just bought a knight hawk helicopter flew it a

k tell someone from the store

Posted on Dec 25, 2010

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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

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