Re: Twitchy tail rotor

On Mon, 4 Feb 2008 09:47:21 -0800 (PST), coustanis
<coustanis@[EMAIL PROTECTED]
> wrote:

>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?

My money is on option 3 - bad tail rotor motor.  Pretty common failure
for thse micros with a motor driven tail rotor.