How long do they stay up?
There is no guarantee on how long your RC Helicopter can remain flying. Different model differ in specification. For example, a nexus has a nice sized fuel tank and can fly 15 to 20 minutes on one tank of gas.
How far do they go
They go as far as the transmitter
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There are a few things that will affect the resonance frequency of your helicopter: 1)Weight and weight placement 2)Size and lengths 3)RPM 4)Shape. So when in doubt change one of those variables and see what happens. If you are planning to fly your RC Helicopter on open spaces then the electric RC Helicopter is your
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