Re: Odd crash, any ideas what happened?

Hi Jennifer,
I assume that you have the stock Parkzone Radio and RX that came with the
Stryker B?
The RX module is known to break down at least with some of your sympthoms.
There is a component on the RX that is regulating the power to the motor
(and perhaps to the servos) that tends to break down, this results in the
motor running at full power no matter what you do with your TX, but usually
there is still control over the servos.

If you are interested, you can read a lot about Parkzone electronics here:
http://www.rcuniverse.com/forum/m_4094683/anchors_4094683/mpage_1/key_/anchor/tm.htm#4094683

I have had two of those RX'es break down on my F27-B, but managed to keep
flying until the battery was drained enough for the motor to stop. I have
since switched to the DX6 and now to DX7, would never look back :-)

Helge


"Jennifer Smith" <jennifer@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:TfOdnSH69N5pLArbnZ2dnUVZ_gSdnZ2d@xxxxxxxxxxxxxx
This morning I stuffed my old F27B, and I don't know what happened:

Charged LiPo, topped off TX batteries. At the field, did the usual
pre-flight: Servo check, engine check, plugs all checked, linkages
checked, fuselage checked. It all checked out, nothing out of the ordinary
whatsoever.

Launched, plane climbed to altitude. Brought it around for a big circle
when I noticed the first oddity: The plane climbed rather steeply. I cut
back power and adjusted the trims, regaining control and deciding to bring
it down. Before I even got to lining up for approach the engine revved up,
the nose dropped into a straight down dive, from about 50-75 feet up. I
cut throttle, flipped from low rates to high rates and tried to pull up -
but the engine was still screaming and the control input had no effect
whatsoever. The plane went straight into the ground, with engine screaming
all the way until impact.

The plane is pretty much a loss. I haven't looked at the mess yet but I'm
stunned as to what would cause such behavior? It doesn't feel like radio
interference, it just seems like an entirely odd loss of control.

Any ideas?


Jen


.

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