coustanis brought forth on stone tablets:
> On Feb 4, 3:28 pm, Kevin <dontemai...@[EMAIL PROTECTED]
> wrote:
>
>>coustanis wrote:
>>
>>>On Feb 4, 2:56 pm, RW Salnick <saln...@[EMAIL PROTECTED]
> wrote:
>>>
>>>>coustanis brought forth on stone tablets:
>>
>>>>>I have an Heli-Max AXE CP all electric helicopter.
>>>>>Recently the tail rotor has become twitchy. It changes it's RPM
often
>>>>>and instantly.
>>>>>Twitchy is the best way I can describe it.
>>>>>This makes it pretty hard to control the heli.
>>>>>Thee heli has had a few tail strikes on the ground ( enough to break
>>>>>the rotor and gear teeth)
>>>>>and a few low altitude (3 or 4 foot) crashes but nothing I would have
>>>>>considered very bad.
>>>>>Any idea what might cause this. I hate to just start replacing
things
>>>>>that aren't bad.
>>>>>Low transmitter batteries?
>>>>>Bad ESC.
>>>>>Bad tail rotor motor?
>>>>
>>>>bad gyro?
>>
>>>I'm not sure it has one. I seem to remember reading that it did but I
>>>sure don't see it.
>>
>>its all in the receiver brick 4 in 1, receiver gyro and speed
controllers
>
>
> I looked it up. It does indeed have one. One board is the receiver
> and the other is the E board with the gyro / mixer etc.
> That is one tiny gyro. Hard to think it would have much effect.
> Anyway, there are some tuning pots on that board for tweaking gyro
> gain and tail rotor trim.
> Wonder if it got banged around too much. Is that common?
> Would a twitchy tail rotor be a symptom of a bad gyro?
yes.
I have also seen the tail rotor "develop a mind of its own' at the very
end of the battery charge. Apparently, when the battery voltage gets
low enough, gyro operation becomes erratic for some reason.
bob
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