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Old Aug 16, 2014, 02:33 PM
S800G,v922,Master CP,V450D03
Lucas86's Avatar
United Kingdom, England, Greenford
Joined Jan 2013
174 Posts
Discussion
Possible interference with incorrect cables managment???

Just had nasty crash with my 450.
Took off,flipped idle up, few flips, back to hoover and sudden lost of control, heli just slammed into the ground.......

I have no clue what could go wrong.....

I'm just wandering if I could get some sort of interference cause by incorrectly arranged cables...

Attaching photos.
Can anyone advise is that ok or shall I ran all the cables differently??
Suggestions?

Flown three batteries this morning with no problems....
And now, first minute of first battery and CRASH.... NASTY ONE

Spec:
V450D03 + Orange TX T-SIX + Orange RX R710
ZYX S2 Gyro
YEP 45A ESC
3 x KDS N290 servos
Align DS525M tail servo.
Zippy Compact 40C 2200mAh

Video from morning:
V450D03 - 05 - Testing new setup,details in description.

SIDE QUESTION:
Lately read somewhere something called "brown out"
I think that was related to ESC/BEC ??
Any more info about that???
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Old Aug 17, 2014, 04:26 PM
Eternal beginner
Rollmops67's Avatar
France, Alsace, Strasbourg
Joined Jun 2012
632 Posts
Quote:
Originally Posted by Lucas86 View Post
Just had nasty crash with my 450.
Took off,flipped idle up, few flips, back to hoover and sudden lost of control, heli just slammed into the ground.......

Can anyone advise is that ok or shall I ran all the cables differently??
Suggestions?

Flown three batteries this morning with no problems....
And now, first minute of first battery and CRASH.... NASTY ONE

Lately read somewhere something called "brown out"
I think that was related to ESC/BEC ??
Any more info about that???
Lucas I see on the second photo that the Rx antenna is parallel and near of the tail strut, wich is carbon fiber, wich acts like a shield. I don't know if you flew with the antenna in this position, but that's definitively not a good position.
This is better :
http://www.rcgroups.com/forums/showp...&postcount=933
I had brownouts before (short losses of reception) and never again after I changed the position of my antenna !

But perhaps your crash has another origin ?

Roland
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Old Aug 19, 2014, 12:23 PM
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norcalheli's Avatar
Marysville, Ca., US
Joined Jan 2007
1,668 Posts
Brown outs have nothing to do with loss of signal. A brownout is a condition where the voltage available to the receiver dips below a certain critical level, causing the receiver to reset, or reboot. It used to be a rare occurrence, but with today's setups that use all digital servos, plus FBL units, etc, that can demand more power than a linear BEC will provide with higher voltage packs it is more and more common. (Linear BEC's deliver less current as the input voltage goes up. ) The cure for a brownout is to use a switching BEC or a receiver pack that can deliver the higher amps needed for all-digital setups.
HTH
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Old Aug 19, 2014, 09:11 PM
AMA 1046820
Powerdyne's Avatar
United States, IN, Muncie
Joined Mar 2013
810 Posts
Quote:
Originally Posted by Lucas86 View Post
Just had nasty crash with my 450.
Took off,flipped idle up, few flips, back to hoover and sudden lost of control, heli just slammed into the ground.......

I have no clue what could go wrong.....

I'm just wandering if I could get some sort of interference cause by incorrectly arranged cables...

Attaching photos.
Can anyone advise is that ok or shall I ran all the cables differently??
Suggestions?

Flown three batteries this morning with no problems....
And now, first minute of first battery and CRASH.... NASTY ONE

Spec:
V450D03 + Orange TX T-SIX + Orange RX R710
ZYX S2 Gyro
YEP 45A ESC
3 x KDS N290 servos
Align DS525M tail servo.
Zippy Compact 40C 2200mAh

Video from morning:
V450D03 - 05 - Testing new setup,details in description.

SIDE QUESTION:
Lately read somewhere something called "brown out"
I think that was related to ESC/BEC ??
Any more info about that???
I see a couple of things on your setup right away that could be causing issues.

1. The Rx Antenna running along that carbon strut for the tail boom
2. The ESC throttle wire from your YEP 45A is running right alongside your servo wires. Even with a ferrite ring, the esc being so close to those wires could be causing signal noise.

However, if it went full negative on you, it could be that it did brown out with a voltage drop, and the failsafe didn't kick in.
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Last edited by Powerdyne; Aug 19, 2014 at 09:20 PM.
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Old Aug 19, 2014, 11:52 PM
Registered User
Tucson, Az
Joined Feb 2007
6,826 Posts
I have some orange H/K RX's and would never put one in a heli. Others may disagree/ plus Orange TX not for me. Wire bundle looks wrong also as stated.
Just wonder if all items changed out was worth it ? Since it ended in a bad crash .
i know upgrades are fine but doing so much at one time.
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Old Yesterday, 03:13 AM
Eternal beginner
Rollmops67's Avatar
France, Alsace, Strasbourg
Joined Jun 2012
632 Posts
Quote:
Originally Posted by norcalheli View Post
Brown outs have nothing to do with loss of signal. A brownout is a condition where the voltage available to the receiver dips below a certain critical level...
HTH
Hello !
I'm french so maybe my vocabular is a little wrong, and I meant in fact short losses of reception. Maybe the correct word is "glitches" ?

Roland
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Old Yesterday, 01:34 PM
AMA 1046820
Powerdyne's Avatar
United States, IN, Muncie
Joined Mar 2013
810 Posts
Quote:
Originally Posted by Rollmops67 View Post
Hello !
I'm french so maybe my vocabular is a little wrong, and I meant in fact short losses of reception. Maybe the correct word is "glitches" ?

Roland
Signal loss, glitches, potato, tomato.
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