Who's gonna be first to crash? lol

[Big Fil]

Originally Posted by psindrup

If that is the case, we should start hearing of similar problems with the new E-flite Blade 400 3D that has just started to ship, because it uses the AR6100e as well. Unless it is the Align BEC that is the problem - or a combination of the two?

Peter

There are many people using the 6100 on 450 size birds including myself with no problems. I have two aircraft on 6100 as well as my father also has a Trex on 6100's with no problems. It may be a combination of loading the BEC up with a bunch of high performance digital servos that is causing the problem but like Bob says until we have data it's just speculation. What gyro is Kevin using? Do some of them draw significantly more power than others?

[fireup]

Originally Posted by Big Fil

What gyro is Kevin using? Do some of them draw significantly more power than others?

I'm currently running CSM SL720 /w S9257 on tail (and HS5245MG cyclic). Most electronic gryos are low power consumption compared to servos.

[Locktite]

Kevin, how are you liking the 5245mg's..I am going to be using them and want to know how the fell...Thanks in advance

[2rbimmer]

Originally Posted by Finless

We really do need to do is put a recorder on the BEC output and see whats happening to the voltage from the BEC in normal flight. I personally do not think it is a low voltage problem myself BUT we can all speculate all day without real data.....

I don't think my Eagle tree can measure BEC voltage but I am going to check and try to get some data.

Bob

Just to see what would happen, i plugged the EagleTree FDR V2 inbetween the Trex 500 ESC and the AR6200 Rx and these are the numbers it recorded (see chart). Input to the ESC was 22.4 volts and the BEC setting was 5.5 volts. This was a bench test, 3 cyclic servos, 1 gyro and 1 tail servo (see early post for types), rapid stick movement only, motor connected to ESC but NOT running.

Why would i only get 4.8volts on a 5.5volt request from BEC programming???

i think i know what caused my Lock Out

[ZipZap]

Originally Posted by 2rbimmer

Just to see what would happen, i plugged the EagleTree FDR V2 inbetween the Trex 500 ESC and the AR6200 Rx and these are the numbers it recorded (see chart). Input to the ESC was 22.4 volts and the BEC setting was 5.5 volts. This was a bench test, 3 cyclic servos, 1 gyro and 1 tail servo (see early post for types), rapid stick movement only, motor connected to ESC but NOT running.

Why would i only get 4.8volts on a 5.5volt request from BEC programming???

i think i know what caused my Lock Out

Interesting. Did you actually set (and verify with a VM) the BEC voltage, or just leave it in the default setting. I'm planning to at least check mine to see that it actually is at 5.5v.

[psindrup]

Is the ESC/BEC that comes with the T-rex 500 a new model, newer used before?

Peter

[Big Fil]

It's a new model

[2rbimmer]

Originally Posted by ZipZap

Interesting. Did you actually set (and verify with a VM) the BEC voltage, or just leave it in the default setting. I'm planning to at least check mine to see that it actually is at 5.5v.

i left it on its default setting and confirmed with a VM and i'm getting 5.3volts out of the Rx, after further review i've realized that the Eagle Tree VDR is consuming 0.5volts explaining the 4.8volts reading on the Eagle Tree VDR.

Also i can't get the lock out to re-occur during bench testing, i even laid the Rx on the ESC while the motor was running to try and get a lock out.

[Jason Bell]

Scary Scary read!

Im watching this thread now, as to decide what my attack route will be, as I DONT want this happening to me.

Im either thinking CC Bec, or a castle 60A Esc. brown out stuff

Bob, dont you have some 9000s? Hook those bad boys up the the 500 on the bench and see what you can do with servo load there.

[rhirsch1]

So I crashed my 500 in the pond, the water broke the fall but fried the ESC. As I read this that my be a good thing. So, since the Align is not yet available as a replacement, any suggestions? Everything else survived. I love the smell of burnt electronics in the morning.

I'm lokking for a direct replacement if one is out there.

[Locktite]

Originally Posted by torkboy

Scary Scary read!

Im watching this thread now, as to decide what my attack route will be, as I DONT want this happening to me.

Im either thinking CC Bec, or a castle 60A Esc. brown out stuff

Bob, dont you have some 9000s? Hook those bad boys up the the 500 on the bench and see what you can do with servo load there.

But then you could tell yourself what about all the other people that haven't had any problems..Sure it is something to think about, but if it was that much of a problem it wouldn't have made it this far...

[dezflyer]

Originally Posted by rhirsch1

So I crashed my 500 in the pond, the water broke the fall but fried the ESC. As I read this that my be a good thing. So, since the Align is not yet available as a replacement, any suggestions? Everything else survived. I love the smell of burnt electronics in the morning.

I'm lokking for a direct replacement if one is out there.

you crashed it where?!?! man that sucks.

dude, bring a fishing pole there next time instead of your new 500.

[fireup]

Did some bench testing. It's still not conclusive yet and by no mean scientific. I clamp my heli to a table with blades off and spool it up comparing the stock 500 ESC that has a built-in BEC and the ESC that comes with the 600 and an external BEC that I've been using on my 600 for the pass 10 months. I scope the voltage of the reciever (output of BEC) to see how "noisy" the line is and how much load is pulled down by the servos and motor. The 500 ESC was program for 5V as this was the setting it was at when I crashed. I notice right away that the voltage was a at 4.8V at rest. When at rest, the line on the 500 ESC is accually cleaner than the external BEC. But when I started spooling up the motor and start pumping the collective, I've notice there was an average of about 0.5V swing where the external BEC was a lot cleaner. I was able to get the reciever to reset a couple of times but not always if I were to pump the collective up real fast as the motor spools down. Hopefully the pictures will show more than my typing. Picture #3 is from the external BEC and Picture 4, 5, 6 is from the 500 ESC.

By the way, everything all fixed and ready to fly again.

ALIGN, N E E D more BLADES!

[fireup]

Originally Posted by Locktite

Kevin, how are you liking the 5245mg's..I am going to be using them and want to know how the fell...Thanks in advance

Servos still holding strong after 2 crashes.

[psindrup]

-> Fireup

What a lab you have there. Align would be envious of you !

Even though you say it is not scientific, I think you have nailed it. These surges should definitely not be there.

A suggestion: Will a "voltage stabilizer" (an ordinary capacitor), mentioned previously in this thread, solve the problem?

Looking forward to follow the result of your lab exercises.

Peter

[OICU812]

One thing that "may" help the dips out is the Spektrum Voltage Protector cap. Not certain but at its size and weight you would think for this situation it might be a good idea?

[PiccoZ06]

I get a little SICK reading all this.

I guess i will just buy me a JAZZ 80 then im sure that it will work.
And i can use the GOV.

[Finless]

Huh? Thats a first crash for sure! In a pond? Really?

Not laughing at ya but thats a bummer if true...

Bob

[rhirsch1]

Originally Posted by Finless

Huh? Thats a first crash for sure! In a pond? Really?

Not laughing at ya but thats a bummer if true...

Bob

Yep in the pond behind the house, it's really only about 6 inches of standing water but mucky. Anyway, the heli survived well except for the ESC which got wet. The reciver was in the water also but not a problem. My 450se went for a swim a couple months ago and fried the esc also but it's receiver survived.

Any suggestions on a replacement ESC, all I know is stock parts and the ESC does not seem available?

[rhirsch1]

Originally Posted by rhirsch1

Yep in the pond behind the house, it's really only about 6 inches of standing water but mucky. Anyway, the heli survived well except for the ESC which got wet. The reciver was in the water also but not a problem. My 450se went for a swim a couple months ago and fried the esc also but it's receiver survived.

Any suggestions on a replacement ESC, all I know is stock parts and the ESC does not seem available?

Here is the 450 when it went swimming