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jimmy77611 · 02-16-2014, 08:03 AM

I crashed yesterday, and I'm trying to figure out why. Stock Trex 450L Dominator 6s with ikon flybarless and a spektrum satellite. ESC and servos are stock, full battery.

I took off and flipped to IU1 then IU2 (85% flat throttle curve, 0-25-50-75-100 linear pitch curve), proceeded to do a tick toc, and when the heli went inverted, it just lost all power and fell to the ground. It seemed much like I was in normal mode, but I wasn't. I flew one successful flight before that one. This was also my 60th or 70th flight with no previous issues.

I'm wondering if I had a brownout!!?? Has anyone browned out the stock esc/bec?

satgod · 02-16-2014, 01:57 PM

it is possible
just depends on how much your servos pulled at that time

000pitch · 02-16-2014, 02:58 PM

Its unlikely though. People have been measuring the BEC voltage on the Dominator using the Castle Edge BEC... (its only 5A peak)

There haven't been any overdraws.
The stock BEC is 6A peak.

I've been absolutely abusing those servos at 6.0 volts, 100% roll and flip rates, 65 expo, 3400 rpm, hard 3D popping... for months now... 16 packs per day.

The BEC in the 45A ESC isn't the same old garbage they used to have.
When I bought my 450L, I also bought a Polaris BEC... but with Align revamping their lineup.. I decided to give it a chance.

That ESC/BEC is awesome non governed.

Benoni heli guy · 09-29-2015, 07:39 AM

Quote:

Originally Posted by jimmy77611

I crashed yesterday, and I'm trying to figure out why. Stock Trex 450L Dominator 6s with ikon flybarless and a spektrum satellite. ESC and servos are stock, full battery.

I took off and flipped to IU1 then IU2 (85% flat throttle curve, 0-25-50-75-100 linear pitch curve), proceeded to do a tick toc, and when the heli went inverted, it just lost all power and fell to the ground. It seemed much like I was in normal mode, but I wasn't. I flew one successful flight before that one. This was also my 60th or 70th flight with no previous issues.

I'm wondering if I had a brownout!!?? Has anyone browned out the stock esc/bec?

Did you ever get to the bottom of this? It sounds exactly what happened to me. I had done about 45 flights with no problem, it was also my 2nd flight of the day, also full battery, also in IU2 and felt like I was in normal.

oliver1071 · 09-29-2015, 09:13 AM

I had a motor bullet pull out my 450L had cold solder joints so I redid them all. Cause one crash with loss of power.

02-16-2014, 08:03 AM	#1 (permalink)
jimmy77611 Registered Users Join Date: Jan 2013	450L Dominator Brownout I crashed yesterday, and I'm trying to figure out why. Stock Trex 450L Dominator 6s with ikon flybarless and a spektrum satellite. ESC and servos are stock, full battery. I took off and flipped to IU1 then IU2 (85% flat throttle curve, 0-25-50-75-100 linear pitch curve), proceeded to do a tick toc, and when the heli went inverted, it just lost all power and fell to the ground. It seemed much like I was in normal mode, but I wasn't. I flew one successful flight before that one. This was also my 60th or 70th flight with no previous issues. I'm wondering if I had a brownout!!?? Has anyone browned out the stock esc/bec? __________________ Synergy 516 \| Oxy 3 \| V Control Host of Full Pitch RC Heli Podcast

02-16-2014, 01:57 PM	#2 (permalink)
satgod Registered Users My HF Map location Join Date: Apr 2011	it is possible just depends on how much your servos pulled at that time __________________ 4 x Rush 750/stretched V-bar KDE 700XF-495 HV servos Greys reactor CC 160-HV Trex 600EFL V2 V-Bar ds610 ds650 CC bec/pro Scorpion 130a HV KDE 600XF-530 450L KDE 1750 cc50 4xDS215MG k-bar X-8 FPV Wing, TBS Discovery FPV, TBS Caipirinha FPV

09-29-2015, 09:13 AM	#5 (permalink)
oliver1071 Registered Users Join Date: Mar 2011	I had a motor bullet pull out my 450L had cold solder joints so I redid them all. Cause one crash with loss of power. __________________ __________ Goblin 380, 500, 570, Mikado 690SX, 480Xx(Stretched 500) , Protos Mini, Max V2 , Oxy 3, Vbar Control/Neo Vlink (Citizen 758)YouTubeProgress:http://tinyurl.com/oliver1071

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02-16-2014, 02:58 PM	#3 (permalink)
000pitch Join Date: Jan 2014	Its unlikely though. People have been measuring the BEC voltage on the Dominator using the Castle Edge BEC... (its only 5A peak) There haven't been any overdraws. The stock BEC is 6A peak. I've been absolutely abusing those servos at 6.0 volts, 100% roll and flip rates, 65 expo, 3400 rpm, hard 3D popping... for months now... 16 packs per day. The BEC in the 45A ESC isn't the same old garbage they used to have. When I bought my 450L, I also bought a Polaris BEC... but with Align revamping their lineup.. I decided to give it a chance. That ESC/BEC is awesome non governed.

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