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HelicopterMain Discussion › flybar paddle stickers
09-04-2009 02:33 AM  8 years agoPost 1
heliaddiction

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tenn

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align flybar paddles

has anyone every had one of the stickers fly off in flight and cause a crash?

Failing to prepare is prepareing to fail.

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09-04-2009 02:37 AM  8 years agoPost 2
Dood

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Wescanson

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since it's pretty obvious you're worried about one of the stickers flying off, try using this stuff:
http://www.batteryspace.com/index.a...TS&Category=962

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09-04-2009 02:46 AM  8 years agoPost 3
heliaddiction

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tenn

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yea my 600 went down today and i can only guess two things cause everything else was ok i think that the sticker came off and caused it to go down or the battery lost voltage. i don't think it was the batt because i checked it before flight and it was 7.3 and when i went out recover my 600 i found the sticker on the paddle was peeled back so i was wondering if that was the cause? the werid thing is i hit throttle hold and killed the motor before it hit the ground and when i checked the batt after it read 3.4 so now im wondering if maybe the batt took a crap on me in mid flight? ahhh i hate it when i don't know why i crashed

Failing to prepare is prepareing to fail.

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09-04-2009 02:48 AM  8 years agoPost 4
Dood

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Wescanson

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I VERY highly doubt a sticker made your helicopter crash.
Um yeah.

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09-04-2009 02:54 AM  8 years agoPost 5
Sean Williams

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Santa Clarita CA

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Yeah a sticker won't make you crash. In fact it won't do anything. I had one come off in flight a long time ago and kept on flying.

Team Avant
Team Triforce
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09-04-2009 02:57 AM  8 years agoPost 6
heliaddiction

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tenn

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i was just wondering it wasn't a case of dumb thumbs. the batt was brand new and just charged it. the good part is in the feild where i was flying there is a patch of tall grass and thats where it went down. it kinda just dove to the right real fast i did not even have time to auto it happen so quick. not alot of damage

Failing to prepare is prepareing to fail.

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09-04-2009 03:02 AM  8 years agoPost 7
DoodrrProfessor - Wescanson - My Posts: All  Forum  Topic

So anyways,
i checked it before flight and it was 7.3
and just charged it.
How long did you charge it for?

Assuming it was a 2s lipo... 7.3V is too low to fly.
That pack is getting close to about done.
Once you put a load on that battery, the voltage will only go down from there.
i checked the batt after it read 3.4
When a lipo battery gets close to the end of it's discharge cycle, the voltage drops FAST.

Have a look at this graph to help you better understand what happened.
This graph is very typical of all lipos.

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09-04-2009 03:08 AM  8 years agoPost 8
heliaddiction

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tenn

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if i have a 7.4 lipo what will the voltage be when fully charged this is where i made my mistake then i just recently chaged to lipo since i went with a 6v setup.

Failing to prepare is prepareing to fail.

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09-04-2009 03:10 AM  8 years agoPost 9
Dood

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Wescanson

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About 8.4V on a full charge.

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09-04-2009 03:12 AM  8 years agoPost 10
heliaddiction

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tenn

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well crap that was it then when i went to fly i checked it and it was 7.3 now i understand. so why do they call it 7.4 then if the charged voltage is 8.4?

Failing to prepare is prepareing to fail.

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09-04-2009 03:13 AM  8 years agoPost 11
heliaddiction

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tenn

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it is the align 7.4 18c lipo

and now i feel real dumb it says riht on the back of the battery 8.4 volt max charge. lol

Failing to prepare is prepareing to fail.

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09-04-2009 03:17 AM  8 years agoPost 12
Dood

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Wescanson

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why do they call it 7.4
Thats the nominal voltage.

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09-04-2009 03:20 AM  8 years agoPost 13
heliaddiction

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tenn

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thanks alot dood for all your great help man

Failing to prepare is prepareing to fail.

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09-04-2009 03:42 AM  8 years agoPost 14
Dood

rrProfessor

Wescanson

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Watch this video so you can see what happens when the voltage gets low.

Watch at YouTube

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09-04-2009 07:26 AM  8 years agoPost 15
Sonic88

rrVeteran

Murfreesboro, TN

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Dont feel stupid. To someone not as experinced in battery tech, thinking 7.4 volts if fully charged on a 7.4 pack is completely understandable. When I first got into them I thought as you did too. Luckily I got away without and mishaps, but it sounds like you managed to get off somewhat OK. You will certainly not make that mistake again.

The other day I powered up my heli with the throttle link disconnected (i know, i know somehow it just escaped my pre-flight) and luckily the carb was only about 10% open so I got a minor hotstart and some embarasment. But you better be damn sure I am checking that throttle link first now.

best of luck with your flying.

Procrastinators of the world unite ... tomorrow.
AMA #: 912822

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09-04-2009 02:46 PM  8 years agoPost 16
heliaddiction

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tenn

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yea i had all the signs even the sat rec was blinking i just didn't know what that was nd now i know bet you that don't happen again.

Failing to prepare is prepareing to fail.

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09-04-2009 02:56 PM  8 years agoPost 17
VooDooX

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San Francisco Bay Area CA, US (San Mateo)

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basicly follow this rule and you will be alright

no matter how little something seems if its not NORMAL then DONT TAKE OFF until you fix it or it will normally end in a crash

sounds weird? DONT TAKE OFF
looks funny? DONT TAKE OFF
Smells funny? DONT TAKE OFF
something seems off? DONT TAKE OFF
something is rigged to make it fly? DEFINANTLY DONT TAKE OFF

and a sticker wont do anything so like everyone else is saying i bet its the batt the sticker coming off may make it weird to control a little but wont do much since theres still the flybar there you may not even notice it

Velocity 50 "99.9999999999999% of an atom is empty space." also 01001000 01001001

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09-04-2009 02:58 PM  8 years agoPost 18
Darren Lee

rrElite Veteran

Woodstock, GA

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What charger are you using? I've never seen a lipo charger that requires you to input the final voltage of the pack. Regardless, 7.3v for a 2S pack is about as low as you would ever want it to be, nevermind flying it at that voltage.

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09-04-2009 03:12 PM  8 years agoPost 19
jackheli

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Vancouver - Canada

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That spectrum test made me laugh so much! It is hilarious!

AND completely flawed!

Who said it is not the same servo model that stalls at 3V? You can clearly see that the Futaba receiver still has the light on when the Spectrum shuts off.

If were a Spectrum customer I would be really worried about trying to be mislead by this video!

And the guy calls himself technical director. Ha, ha...

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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09-04-2009 03:50 PM  8 years agoPost 20
Trap

rrApprentice

Grand Forks, North Dakota

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jackheli - I was under the impression that if the voltage on a Spectrum receiver dropped below 4.0 volts, the thing would "brown-out." Can I take from the demonstration (misguided as it may be) that it won't "brown-out" until it drops below 3.2 volts? That would be better than I had been told when I bought my 9000 with a JR9303.

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HelicopterMain Discussion › flybar paddle stickers
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