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› Jive 120hv Shut down in flight
10-14-2011 05:42 PM  6 years agoPost 1
Mike Bilyk

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Tulsa, OK - USA

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First flight on a brand new jive 120, hover for a sec, went right into 3d, after about 30 seconds the motor powered down?

Setup is
12S 45c
jive 120 hv ver 9( running mode 11)
Xera 4030 3Y

WTF? anyone have thoughts on this?

AMA # 617778
Team MasterCard

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10-14-2011 05:44 PM  6 years agoPost 2
bkervaski

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Birmingham, AL, USA

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Yea, you're simply over heating it, it's a safety feature.

Do you have the heat sync installed and adequate overflow?

If that doesn't help you'll need to re-visit your gearing choices.

Team Synergy Factory Specialist / Scorpion / Thunder Power / Byron's Fuels

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10-14-2011 05:46 PM  6 years agoPost 3
haq0901

rrVeteran

Miami, FL USA

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heatsink? and what are the temps on esc? Airframe?

Also if you could please tell us the series of blinks on the jive upon shutdown....

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10-14-2011 05:50 PM  6 years agoPost 4
Mike Bilyk

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Tulsa, OK - USA

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Yes, I have the heatsink.

I have not temped the esc or the motor as this was the first flight.
I have the esc installed in the front bay of a 700. maybe move it in the back under the rotor wash?

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10-14-2011 05:58 PM  6 years agoPost 5
bkervaski

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Birmingham, AL, USA

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Or just change your gearing ...

Team Synergy Factory Specialist / Scorpion / Thunder Power / Byron's Fuels

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10-14-2011 06:12 PM  6 years agoPost 6
haq0901

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Miami, FL USA

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+1 on the gearing! That's always a great solution!

What head speed are you running?

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10-14-2011 06:29 PM  6 years agoPost 7
garden

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Norway

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I have the same problem with the Heli Jive 120HV. A few seconds after I enter idle-up the engine shuts down. I'm only hovering in idle-up. The ESC is cold and no led blinking to indicate what the problem is. I have tried two different Scorpion motors and even a Kontronik Pyro 700-52. Even tried another Heli Jive. The same problem everytime; the motor shuts down after a few seconds of hovering in idle-up. When I land the heli and move the trottle to 0 % and start to give trottle again it will lift off in normal mode but the engine then shuts down almost immediately after I get into a hover. With the pyro motor (520kv) my gearing is 10:1. ATV on trottle is -100/+100 and the trottle is at 65 % in idle-up and 40 % in hover.

I have no clue at all what the problem might be

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10-14-2011 06:30 PM  6 years agoPost 8
Chuck Bole

rrElite Veteran

Tulsa Ok. U.S.A.

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More than likely it's shutting down from over amping.
Need to know the gear ratio and the number of blinks you get aftr shut down. Also what is the low voltage set to?

chuck

Team Synergy Field Representative / Thunder Power

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10-14-2011 06:31 PM  6 years agoPost 9
bkervaski

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Birmingham, AL, USA

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It's not really a problem .. it's a safety feature (to prevent your esc from bursting into flames) .. you're over amping or over heating the speed controller ... probably just happens at the top of a freshly charged pack with a 25C or higher rating ... Likely stops happening after the first 45 seconds since the voltage has dropped off ...

Simple fix is to take it easy the first minute or so or go for a more permanent fix and change the gearing ...

Team Synergy Factory Specialist / Scorpion / Thunder Power / Byron's Fuels

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10-14-2011 06:36 PM  6 years agoPost 10
Mike Bilyk

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Tulsa, OK - USA

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running 112T main and 12T pinion.

I didnt check the blinks after the flight. Guess ill try it again and look.

I have no clue what low voltage is set to. I just reset the ESC(mode 1), programed mode 11 and flew the thing...

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10-14-2011 07:14 PM  6 years agoPost 11
Chuck Bole

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Tulsa Ok. U.S.A.

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I ran mine in Mode 4 worked fine..
chuck

Team Synergy Field Representative / Thunder Power

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10-14-2011 09:39 PM  6 years agoPost 12
Mike Bilyk

rrApprentice

Tulsa, OK - USA

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As Chuck pointed out you need to re-tin your pre tinned wires. I re-soldered all of my connectors and just flew the crap out of it, no issues

I believe this was a case of a cold solder joint caused by two dissimilar solders.

First flight 3 min. 1900HS
ESC 86.1 degrees F
Motor 115.7 degrees F

Second flight 3 min. 2100HS
ESC 92 Degrees F
Motor 157.5 Degrees F

AMA # 617778
Team MasterCard

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10-14-2011 10:37 PM  6 years agoPost 13
Chuck Bole

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Tulsa Ok. U.S.A.

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Hard to beat that combo..
chuck

Team Synergy Field Representative / Thunder Power

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10-15-2011 06:30 AM  6 years agoPost 14
Chuck Bole

rrElite Veteran

Tulsa Ok. U.S.A.

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Heard Lucien Miller talking on a Podcast about seeing that problem.

He was saying the solder used by some companies had different chemical make up than the solder you find at Radio Shack ect..
So it's important to re tin all pre tinned wires to get compatable solder on it before installing connectors. And prevent a potential cold solder joint.

chuck

Team Synergy Field Representative / Thunder Power

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10-15-2011 02:47 PM  6 years agoPost 15
Justin Stuart (RIP)

rrMaster

Plano, Texas

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I always resolder every connector every time. I don't know about that "lead free solder". They have tried more than a few times to take leaded solder off the market. I've been breathing lead fumes off of solder since I was a little kid, and I seem to be doing OK.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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10-16-2011 02:59 AM  6 years agoPost 16
Futura SE

rrKey Veteran

Fayetteville, Arkansas

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Justin that explains a lot...

I have a big spool of gold old fashioned Kester Lead Solder and I ain't parting with it. It is still available on Ebay. A little pricey, but worth every penny too.

Most all the lead free stuff is junk. Won't flow at all. Acts like hot glue.

Don't worry Justin, we haven't killed THAT many brain cells with it. I tell myself that anyway.

FYI, if that was a Castle you'd be buying a new kit and contents as it would have flamed!!!! The Jive knew to shut down.

Norman Ross Jr.

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10-17-2011 07:17 PM  6 years agoPost 17
hndaluvr

rrNovice

Delaware

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Yes... definitely check ALL connectors and battery connectors. Solder joints can cause over-current, as well as what happened to me.... I had EC5 connectors that were a bit loose fitting, they caused un-seen sparking within the connectors resulting in high-resistance connections to the batteries. Once i changed the connectors... problem SOLVED!

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10-19-2011 01:13 AM  6 years agoPost 18
helicraze

rrElite Veteran

Victoria - Australia

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Also keep the wires away from jive if possible (dont route them against it), you might have arming issues

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10-24-2011 06:10 AM  6 years agoPost 19
Stephen Born

rrElite Veteran

USA

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Yea, you're simply over heating it, it's a safety feature.
Better than a fireball.

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