Help! ESC kicking out!

[Houndpup Rc]

Hi, So my brother recently got a 12A ESC for his Mini Scout.....Only there is one problem, he is using 9g servos with only a 1A BEC on his ESC, so when he starts moving his servo quickly it restarts his esc! I was wondering if 6g servos will draw enough less amps to work fine with his BEC?
Thanks!

 

[Mr Man]

Hi, So my brother recently got a 12A ESC for his Mini Scout.....Only there is one problem, he is using 9g servos with only a 1A BEC on his ESC, so when he starts moving his servo quickly it restarts his esc! I was wondering if 6g servos will draw enough less amps to work fine with his BEC?
Thanks!

they would draw less amps, hopefully a lot less.

 

[Merv]

...so when he starts moving his servo quickly it restarts his esc...

No idea on 6g servos. I've seen tests that a 9g servo has a max draw of about 3/4 of an amp. So you should be able to run 4 9g servos on a 3 amp BEC.

I'm guessing it's the Rx dropping out and reconnecting with the ESC.

 

[Houndpup Rc]

No idea on 6g servos. I've seen tests that a 9g servo has a max draw of about 3/4 of an amp. So you should be able to run 4 9g servos on a 3 amp BEC.

I'm guessing it's the Rx dropping out and reconnecting with the ESC.

Its not the Rx because we had it sitting there on the bench and slowly moved the sticks faster and faster and then it would kick out. By the way its only a 1A BEC.

 

[Mr Man]

Does he have any other esc's?

 

[Houndpup Rc]

30A and 60A and 80A and 100A

 

[Mr Man]

How about the 30a? that's what I've got in mine and it flies just fine.

 

[Houndpup Rc]

How about the 30a? that's what I've got in mine and it flies just fine.

I am borrowing that . Also he said he doesn't mind buying new servos, its just a question of which size. The other option is he could get a BEC.

 

[Mr Man]

I am borrowing that . Also he said he doesn't mind buying new servos, its just a question of which size. The other option is he could get a BEC.

Then I would go the BEC route.

 

[Merv]

Its not the Rx...

In my experience, when the servos draw too many amps, the voltage from the BEC drops. If it drops below what the Rx can tolerate, it will brown out & reboot when the voltage recovers, which is immediately.

 

[Houndpup Rc]

Then I would go the BEC route.

Okay

 

[Bricks]

I would change out the ESC plenty of cheap ESC`s with 2 amp BEC.

How is the battery?

 

[Houndpup Rc]

I would change out the ESC plenty of cheap ESC`s with 2 amp BEC.

How is the battery?

The battery is brand new. He just bought another one with a 4A BEC.

 

[Mr Man]

The battery is brand new. He just bought another one with a 4A BEC.

That’ll work.

 

[Houndpup Rc]

That’ll work.

Yup!

 

[quorneng]

Just how free moving is the linkage and hinges on the surfaces that the servo are having to move?
Any permanent resistance will increase the amps the servo draws, particularly as you move the servo faster. The same is likely to happen using a smaller servo. As a check try disconnecting the links on the servo and see if it still over loads the BEC. If it does the problem is the servo amp draw not the linkage resistance.
I assume you are using 3 servos if so a 1A BEC is very small. You really need a 3A BEC minimum. Get a new ESC with a bigger capacity BEC!

 

[LitterBug]

You could always get a second BEC to power everything. 1A is too small.

 

[Shurik-1960]

1 amp for Chinese servos is 1 amp in Chinese parrots : a voltage regulator of 30 amps actually works up to 20 amps ( my practice of disassembling burnt-out mosfets is designed for a short-term load of up to 25A ) . Therefore, it is necessary to take into account Chinese parrots and take them with an excess of 2-3 times for reliability. In order not to throw off your voltage regulator, just buy a separate 5 volt 3-4a for BEC.

 

[Houndpup Rc]

Just how free moving is the linkage and hinges on the surfaces that the servo are having to move?
Any permanent resistance will increase the amps the servo draws, particularly as you move the servo faster. The same is likely to happen using a smaller servo. As a check try disconnecting the links on the servo and see if it still over loads the BEC. If it does the problem is the servo amp draw not the linkage resistance.
I assume you are using 3 servos if so a 1A BEC is very small. You really need a 3A BEC minimum. Get a new ESC with a bigger capacity BEC!

You could always get a second BEC to power everything. 1A is too small.

Yup! He got a 20A 4A BEC! works great! We didn't realize that a BEC could be too small when we ordered the first one.

 

[quorneng]

One of the first things I did was to set up a my most used servo on a BEC with a multi meter inline with the red wire to see what amps it actually took both wiggling the sticks rapidly and in a full jammed condition.
A micro analogue 3.7g servo took 0.4A when "wiggled" and less than 1A when jammed.
I was then happy a 3A BEC would be good for 4 such servos unless two or more locked up simultaneously. Hopefully very unlikely.