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T-REX 600 › I crashed the 600 today
01-18-2009 02:06 AM  9 years agoPost 1
Showstopper

rrVeteran

pensacola, Fl

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Well, I have owned my 600 for around a year and a half and it was never crashed. Well today I was out having a good time with it and I was about 20 feet off the PAVED runway and I was rolled up side down. The next thing I know the heli had rolled back over and pitched up. The it proceed to piro into the ground. Lost the frame set, blades, bottom plate, canopy, and the normal other parts you lose. The first question I have for everyone is, does anyone use a CC BEC? Have they ever had a failure with it? I did not have any control when it went in. I am still on 72 MHZ. It was only me and my bro at the field. After the crash I tried to fire up the servos and no power at all. I will be going through it later to see if I lost a ball link, BEC, or the Receiver. Any way just sucks to crash.

PS: My bro keeps telling me people have had trouble with the CC BEC. I have not heard anything about them giving out but just wondering if anyone else has had that experience.

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01-18-2009 02:22 AM  9 years agoPost 2
caseyjholmes

rrElite Veteran

Portland, Oregon

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edited for relevance

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01-18-2009 02:42 AM  9 years agoPost 3
R38133

rrKey Veteran

USA

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I have had 2 Castle Creations BEC's Fail The first smoked on inital power up The 2nd went out after 50 flights little damage on a 500 thank GOD for tall grass. I will not use them above 4S They have worked flawless on 4S 450's High voltage high current is another story
Common Sence makes a HV BEC that has been flawless on 8S I think its good for 45V-50V

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01-18-2009 02:59 AM  9 years agoPost 4
Showstopper

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pensacola, Fl

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I was using it on a 2s lipo receiver pack. I will check it tomorrow. I sure wished I would not have crashed that heli today it fly's so good.

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01-18-2009 03:23 AM  9 years agoPost 5
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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I was using it on a 2s lipo receiver pack.
I don't understand. Were you using 5S, 6s or 10S with BEC ?? I fly 10S but don't trust any BEC on the 10S so I fly a seperate recv pack.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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01-18-2009 03:38 AM  9 years agoPost 6
Kona Chopper

rrKey Veteran

Kailua-Kona, Hawaii USA

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Found this old post on the subject. http://www.runryder.com/t383435p1/



Why buy?? when you can borrow and no return

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01-18-2009 03:43 AM  9 years agoPost 7
Showstopper

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pensacola, Fl

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I fly a separate receiver pack as well. That is why I am using a 2s 1500Mah battery pack for the receiver. Come to think of it the CC was pretty new. I had ran a sport BEC on there for a long time. The CC has been on there for around two or 3 months.

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01-18-2009 04:17 AM  9 years agoPost 8
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Hmmmm, 2S may be pushing the lower limit of a BEC.
EDIT: At 3.3 X 2 thats only 6.6 vo;ts in, and if you drop to 3v per cell,well you get the idea.
Saw this on another thread.,..
It's a switching reg, which means it doesn't need fancy cooling, and wants higher voltage (at least 3S) to make it work well.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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01-18-2009 04:22 AM  9 years agoPost 9
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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I just looked up the CC BEC and it is rated to 2S.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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01-18-2009 04:24 AM  9 years agoPost 10
Showstopper

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pensacola, Fl

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Plus a lipo is 3.7 volts per cell making it a total of 7.4 volts. I was running the output at 5 volts.

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01-18-2009 04:28 AM  9 years agoPost 11
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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I was stating the low discharged limit on lipos, 3.3V. The CC does state that if the input drops to less than the output is regulating to then the output follows the input. So if your lipos were damaged or almost fully discharged a sudden servo load may have pulled the voltage down for a reset ???

EDIT: sorry for your crash, but if it helps I crashed my Razor 600E today and I haven't figured out why it took a dive while hovering.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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01-18-2009 05:23 AM  9 years agoPost 12
Showstopper

rrVeteran

pensacola, Fl

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Man sorry to hear that. By the way I am not trying to be an a$$. I don't want you thinking that I am. I appreciate all the input. And no it does not make me feel good that you crashed your razor. It really sucks to have to put a heli back together. Especailly when it flies so dang good. Have a good one.

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01-18-2009 01:20 PM  9 years agoPost 13
missle

rrApprentice

West Chester, Oh

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Showstopper, I've been using CC BEC's for a couple of years now and all I can say is that I've been lucky. I've not had any fail on me until a couple of months ago (but it was while I was working on my 600 on the table). I had installed some new cyclic servos that were much higher performance and demand (Align 610's), and noticed that with fast movement of the sticks (testing on the table), the voltage would dropped just good enough to reset my AR7000 rec. Now when this happened I was using a TP 2S 1320mah bat (very good condition and low cycles) for the rec. I emailed and posted on several forums, and was schooled on the CC BEC's inability to maintain voltage for the Spektrum systems when using a 2S bat. It's NOT the resting voltage, or even the voltage under load, but rather the voltage drop with a high load that causes a momentary voltage drop that's enough for the rec to reset. I've since went to eliminating the rec pack (which is the intent of the BEC anyways) and was running it straight off the 6S bats. Unfortunately, I was greedy and am now running a 8S setup, so had to change back to a rec pack anyways.

WATCH OUT!!!!!!!!

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01-18-2009 01:48 PM  9 years agoPost 14
Showstopper

rrVeteran

pensacola, Fl

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What gets me is that at this point I have absolutely no power going to the receiver at all. I still have not had a chance to check the voltage coming out of the BEC I still need to take everything apart and test the components individually. But I think I won't be using the CC BEC anytime soon.

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01-18-2009 03:14 PM  9 years agoPost 15
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Showstoipper
I didn't think you were being an a$$z, no need to apologize. As for my crash, well I just wanted you to know we are both in the same quandary right now.
Paul

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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01-18-2009 03:21 PM  9 years agoPost 16
Showstopper

rrVeteran

pensacola, Fl

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Ok just maken sure.

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