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Modifying helicopter help

Old 01-25-2013, 01:20 AM
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Default Modifying helicopter help

Ok, so my Aunt and Uncle got me a cheap little rc helicopter for christmas and by now i would consider myself to be pretty good at flying it.
So i decided that it didnt have enough power...i started taking it apart and took out the battery (3.7V) and i spliced the wires to work for a larger battery pack from a different helicopter I have thats broken (8.4V). I know thats quite a big power difference...almost 2.25 times higher. I soldered the connection and when i turn it on the light works, and when i turn up the throttle the blades start spinning. The problem is when I get to about half throttle the motor cuts out. I was wondering if this was because the battery is too powerful for the motors? or if there might possiblybe a way to fix this problem? Thanks.
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