On Feb 4, 9:09 pm, "Ruiz" <rui...@[EMAIL PROTECTED]
> wrote:
> "coustanis" <cousta...@[EMAIL PROTECTED]
> wrote in message
>
>
news:6a2a85f4-0464-41ac-ac41-e0d1a7e99f36@[EMAIL PROTECTED]
>
> > On Feb 4, 4:51 pm, The OTHER Kevin in San Diego <skiddz "AT" adelphia
> > "DOT" net> wrote:
> >> On Mon, 4 Feb 2008 09:47:21 -0800 (PST), coustanis
>
> >> <cousta...@[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.
>
> > Well, I suppose th if I hook a volt meter to the motor and see no
> > voltage fluxuations, it would be the motor.
> > If I see an erratic voltage jumping about, it must be in the circuit
> > somewhere.
>
> I have a blade cp and that symptom usually means that the tail motor is
> loosing torque and the gyro is trying to compensate for the problem. So
if
> you put a voltmeter on the connections it will fluctuate. Sometimes it
can
> be adjusted with the gyro in the 4-in-1 until it holds steady but
eventually
> the tail motor has to be replaced mainly because it will overheat after
a
> minute or two of flying around and start acting up again or worst kill
your
> 4-in-one.
>
> Frankly I would try replacing the motor first since its roughly 10
dollars
> at the LHS and the 4-in-1 runs around 40 to 60 dollars depending on who
> manufactures the thing.
I didn't think the LHS would have such a specialized thing. Tower
Hobbies wants 25 bucks plus ****pping.
I'll give that a try.
Thanks.
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