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HomeAircraftHelicopterMain Discussion › krontronik & 550E 3GX
11-16-2011 01:38 PM  6 years agoPost 21
Zaaaguy72

rrElite Veteran

MN

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Dude, I have no idea why you are questioning Fredrik's advice. He knows his stuff. Just be appreciative that someone is giving you good advice. What you choose to do with it is up to you.

Team Sanjel!

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11-16-2011 01:50 PM  6 years agoPost 22
MrMel

rrProfessor

Gotland

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You have to also take into account that the OP probably does not fly like Bert Kammerer, I could be wrong however?
Actually, it makes not much difference, its not how hard you fly it, its the start and stop of the servos that generate those dangerous peaks.

Its to wiggle the FBL sensor or sticks that is most dangerous.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

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11-16-2011 01:51 PM  6 years agoPost 23
Martyn Harris

rrNovice

Cornwall, UK

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Well the Jive 100+ is in and working nicely, my DX8 telemetry was giving me loads of Rx power warnings on the bench when moving the cyclic around with the Stock Align BEC but with the Jive BEC the DX8 is silent

Martyn

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11-16-2011 03:05 PM  6 years agoPost 24
Richardmid1

rrProfessor

Leeds, England

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You have to also take into account that the OP probably does not fly like Bert Kammerer, I could be wrong however?
Actually, it makes not much difference, its not how hard you fly it, its the start and stop of the servos that generate those dangerous peaks.

Its to wiggle the FBL sensor or sticks that is most dangerous.
I was refering to the ESC's current handling capacity. 99.9% of people won't over amp an 80 amp ESC in a 550. A Jive will notify the other 0.1% with an error and they can adjust their setup accordingly.

60% of the time, it works every time!

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11-16-2011 08:06 PM  6 years agoPost 25
MrMel

rrProfessor

Gotland

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While Justin Stuart probably would be very proud to be called flying like Bert, I would not say they have even close to same flying style

Sure, he is using a Scorpion motor on his 550, but he puts the Jive 100LV on the border limit with it, but he is using stock length blades.

(borrowing his JLog (Jive logging) data here since he has logging and a T550)

This, and others with same result, Hence my recommendation.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

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11-16-2011 09:10 PM  6 years agoPost 26
Richardmid1

rrProfessor

Leeds, England

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So I see upto 200 amp spikes lasting less than half a second, is that enough to shut an 80+LV down?

With the current draw bouncing up and down so wildly ide say its either too highly geared, the heli is setup with too much pitch or being too erratic on the sticks combined with either or both of the two.

60% of the time, it works every time!

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11-16-2011 09:17 PM  6 years agoPost 27
MrMel

rrProfessor

Gotland

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Its geared correctly, even on the low side (you can get all data from this file, exactly PWM output to motor, RPM and so forth)

Same setup can actually spike up to 270A without problem, which the jive will take one peak, its when you get those repeated 200+ peaks, that builds up temp, and higher temp will lower the amp rating.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

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11-16-2011 11:53 PM  6 years agoPost 28
Justin Stuart (RIP)

rrMaster

Plano, Texas

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That's my helicopter (thank you MrMel for figuring out how to display the graph so nicely), and I have never had a problem with shutdown, even on some 108F summer days. But I think with such high amp draw, a 100LV is still somewhat marginal and I would choose a 120LV if one was available. But at least with Kontronik you don't really need to worry about a fire even if you're severely overamping your ESC.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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11-17-2011 10:45 AM  6 years agoPost 29
Richardmid1

rrProfessor

Leeds, England

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The repeated high spikes are only lasting 10 seconds in this case and in between the amp draw is dropping to around 20 amps with the average being around 50.

60% of the time, it works every time!

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