CC45 shut down eco destroyed

[speedpro]

CC45 shut down eco destroyed

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this is the second time my eco went down from esc shut down. first was from about five feet hover. i then set current limiting disabled hasnt shut down in twenty or so flight until today this is the warmest day i have flown in 75 degrees has been in fortys and fifties prevously. was up about 100 feet only three minutes into my second flight it just quit eco destroyed. running phasor 30-3 motor cc45 esc gp3300 cells 20 tooth pinion highest amp draw seen as tested with a watt meter is 19 amps hoovers at 14 amps was set at 85% in high gov mode also has fma8 with co pilot which showed no bad frames at crash site.Im scared to fly with this ecs again. any ideas

[Impact]

Have you shut off your low voltage cutoff?

[speedpro]

it is set at 4 volts which is the lowest setting (option 1) it does have current limiting disabled i recharged the gp3300 pack which was is the crash it only took1600ma

[Impact]

What are you useing to run the electronics, BEC on speed control,a seprate battery or UBEC.

[Impact]

I looked at the castle site and a phoenix 45 bec will run 4 micro servo's with 10 cells. If you run 4 micro servo's and the gyro from the BEC that may push it over the edge. To disable the BEC and run seprate battery for the electronics you must disconnect the red wire from the plug on the speed ccontrol....

[speedpro]

i was running the bec from speed control

[Impact]

A ubec unit can be used or a 4 or 5 cell pack 600 mah and up can be used also it's up to you. I use a 5 cell 1100 mah nimh to power my electronics, I like this way because I can have the electronics on without fear of an unplanned start up. What I have found is that one hour of flying is roughly 400 mah with hs-81's and a ikarus profi gyro....

[Bones]

>>i was running the bec from speed control<<

That is the problem. The BEC on the Phoenix is not designed to run on such as high demand like the ECO 8.

Use a separate receiver battery pack or a UBEC.

[speedpro]

thanks bones i will install a ubec when i get it back together

[Impact]

What am I? Chopped Liver!! Just Kidding Good Luck

[speedpro]

sorry thank you very much impact for your research and input

[Smittylube]

Ditto here.

Example-

Flew my ECO for about a year no problem P60 BEC.

Then I switched to a digital tail servo and switched the 401 gyro to the dig mode as well.

When I would flip it over the tail went piro crazy for a short time once or twice. the third or 4th time it went in. BEC overload.
I added the ubec on rebuild and no problem running the digital servo.

Yes the specs say 4 servos but add a gyro & your at the limits, get a binding servo and your done.

Hope the rebuild goes smooth

[speedpro]

thanks smittylube

[Wolf_6]

If you do go to a UBEC, which I highly recommend as well, make sure you diusable the BEC function on whatever controller you use.

Just thought I would mention it...not that you wouldn't, but after seeing your heli in pieces it tends to make ones head hurt (as well as the wallet).

[speedpro]

your right wolf. already have the red wire pulled out of the connector and shrink tubing over wire. and i havnt even got the ubec yet.

[Malcolm]

Quote:

If you run 4 micro servo's and the gyro from the BEC that may push it over the edge.

Or you can use a "proper" ESC like a Kontronic, Hacker or Schulze that has a BEC output that can handle the normal 4 servos and gyro that you come to expect in a helicopter

[_Buzz_]

Quote:

Or you can use a "proper" ESC like a Kontronic, Hacker or Schulze that has a BEC output that can handle the normal 4 servos and gyro that you come to expect in a helicopter

You might be right Malc....but I still use a seperate Rx batter and I AM using a Kontronik.

[Malcolm]

belt and braces approach then

[_Buzz_]

That's me...never one to flash my butt !!! LOL

[Wolf_6]

Best advice ever given to me was to:

1. Go Brushless

2. Buy a controller that does not have BEC capability and use either a UBEC or seperate battery pack.

3. Go Brushless

That is why I am running the Kontronic 40-6-18 BEAT. It does not have BEC capability.

[Bones]

>>Or you can use a "proper" ESC like a Kontronic, Hacker or Schulze that has a BEC output that can handle the normal 4 servos and gyro that you come to expect in a helicopter <<

I am not sure if those "proper" speed controllers have the "proper" BEC to handle the demand either.

[Woogie]

I use a kontronic 40-6-16 and the bec works flawlessly

[Smittylube]

>>>I use a kontronic 40-6-16 and the bec works flawlessly<<<<

I also used the P60 for about a year w/o problems till I went digital.

Yes they are made to exceed the ratings of 4 servos- however in a heli no power to the RX even for a blip is no good.
This is why many use an RX battery pack to be safe (not me personally). Sure even this can fail, but it runs pretty much unloaded compared to what we ask of our flight packs.

[Wolf_6]

It is all a matter of math...

UBEC costs $35-$40 (last time I checked)

Replacement of parts after a crash ????

I am not saying that BECs don't work out there, but the smart money is on not testing it out with your $1000 investment. I would rather see you crash because you couldn't fly, not because IT couldn't fly.

[Smittylube]

Totally

[Q]

Also keep in mind that the BEC on ESCs are not of the switching type and need to "shed" the voltage drop as heat. The higher the voltage drop, the more heat they need to dissipate, the less power they can output to the servos. Because the specs say the BEC can support 4 servos, this does not mean it can do it at 10 cells. The maximum supported numbers of servos is generally at the lowest voltage input! It's all in marketing strategy.
I don't use an ESC-BEC in helicopters any more, unless it's a micro.

[alloy]

I did a lot of research, experiment and thinking. At last, I go receiver battery pack for safety. I use Kontronik too...

[Sao]

Of course you could also use a switching BEC like the SBEC or the latest one from Kontronic


http://www.revolutionmodels.co.uk/acatalog/Top_Kontronik_63.html

[speedpro]

im now back together with ubec installed testing today

[Smittylube]

Not bad- 3 days & $300 bucks later