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Old 12-10-2012, 03:45 AM   #1
mclarkson
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Default First time BEC setup - double-checking

I have a flying wing with periodic, weird shut-off behavior. This wing has a gyro and I decided the problem might have to do gyro+small, built-in BEC that so I picked up this Turnigy 5A SBEC at random.

So ... I'm thinking I need to:
  • Bind the Tx/Rx
  • Remove bind plug
  • Plug BEC into BATTERY/BIND port on Rx
  • Remove the Red/+ wire between the ESC and the Rx
  • Connect ESC and BEC to battery plug

Is this correct?

It seems like I'll need to re-wire the red/+ lead if I need to rebind this plane. Is that right, or am I missing something somewhere?

p.s. This SBEC is huge. Did I over-do it?

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Old 12-10-2012, 03:51 AM   #2
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That Sounds Right to me

http://www.wattflyer.com/forums/show...t=ubec+chellie


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Old 12-10-2012, 03:54 AM   #3
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[QUOTE=mclarkson;891583]I have a flying wing with periodic, weird shut-off behavior. This wing has a gyro and I decided the problem might have to do gyro+small, built-in BEC that so I picked up this Turnigy 5A SBEC at random.

So ... I'm thinking I need to:
  • Bind the Tx/Rx
  • Remove bind plug
  • Plug BEC into BATTERY/BIND port on REC
  • Remove the Red/+ wire between the ESC and the REC
  • Connect ESC and BEC to battery plug
Is this correct?

It seems like I'll need to re-wire the red/+ lead if I need to rebind this plane. Is that right, or am I missing something somewhere?

p.s. This SBEC is huge. Did I over-do it?[/QUOTE]

Naw thats Fine

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Old 12-10-2012, 03:57 AM   #4
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Whoops. Thanks for catching my Rx/Tx typos there.

It's just that the plane itself is only using a little 10-12A ESC so this SBEC is 2-3 times its size and weight. (Not counting the ferrite core!)

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Old 12-10-2012, 04:21 AM   #5
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[QUOTE=mclarkson;891587]Whoops. Thanks for catching my Rx/Tx typos there.

It's just that the plane itself is only using a little 10-12A ESC so this SBEC is 2-3 times its size and weight. (Not counting the ferrite core!)[/QUOTE

here is a ubec that weights 13.6 grams Rather than 36 grams

http://www.hobbyking.com/hobbyking/s...ge_Buzzer.html

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Old 12-10-2012, 04:32 AM   #6
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Originally Posted by mclarkson View Post
Whoops. Thanks for catching my Rx/Tx typos there.

It's just that the plane itself is only using a little 10-12A ESC so this SBEC is 2-3 times its size and weight. (Not counting the ferrite core!)
This E Power Stuff Almost Drove me Crazy At First Watts, UBEC, BEC, Watts, C Rateing, Mah, Amps, ESC, Lipo Balancer, Lipo Chargers, Motor KV,Etc, I almost gave up on E Power, And went back to Nitro But I am a Stubborn Person and stuck with it untill I became comfortable with it, I dont know it all, But i am able to set up my Planes to be dependable and have Gobs of power, it took me over a Year to get comfortable with E Power, so I know what others are Going through and I am Very Happy to help others if i can, Take care and have fun, Chellie

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Old 12-10-2012, 04:42 AM   #7
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My thought process - ignorant though it may well be - was that there wasn't much point in getting a separate BEC that was only 2-3A, as the ESC itself already offers that. That's why I went with the 5A...

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Old 12-10-2012, 05:18 AM   #8
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Originally Posted by mclarkson View Post
My thought process - ignorant though it may well be - was that there wasn't much point in getting a separate BEC that was only 2-3A, as the ESC itself already offers that. That's why I went with the 5A...
Maybe this thread might help on those BEC's.

http://www.wattflyer.com/forums/showthread.php?t=63779

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Old 12-10-2012, 09:50 AM   #9
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Note that the BEC doesn't NEED to go into the Batt/Bind socket....it can plug into any free socket on the receiver or even into a Y-lead in one of the sockets (I normally use throttle) and then you can remove the red lead from the arm of the Y-lead that the ESC plugs into rather than from the ESC itself.

That makes rebinding and perhaps reusing the ESC a lot simpler as you don't need to mess about so much with red wires.

Steve
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Old 12-10-2012, 07:35 PM   #10
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Originally Posted by mclarkson View Post
I have a flying wing with periodic, weird shut-off behavior. This wing has a gyro and I decided the problem might have to do gyro+small, built-in BEC that so I picked up this Turnigy 5A SBEC at random.

So ... I'm thinking I need to:
  • Bind the Tx/Rx
  • Remove bind plug
  • Plug BEC into BATTERY/BIND port on Rx
  • Remove the Red/+ wire between the ESC and the Rx
  • Connect ESC and BEC to battery plug
Is this correct?

It seems like I'll need to re-wire the red/+ lead if I need to rebind this plane. Is that right, or am I missing something somewhere?

p.s. This SBEC is huge. Did I over-do it?
Bind the Tx/Rx Not if already bound.

Remove bind plug Of course

Plug BEC into BATTERY/BIND port on Rx You can - but better just to plug into another spare position as power pins are common on all Rx's.

Remove the Red/+ wire between the ESC and the Rx Correct.

Connect ESC and BEC to battery plug Correct

Nigel

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Old 12-10-2012, 07:44 PM   #11
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Originally Posted by slipstick View Post
Note that the BEC doesn't NEED to go into the Batt/Bind socket....it can plug into any free socket on the receiver or even into a Y-lead in one of the sockets (I normally use throttle) and then you can remove the red lead from the arm of the Y-lead that the ESC plugs into rather than from the ESC itself.

That makes rebinding and perhaps reusing the ESC a lot simpler as you don't need to mess about so much with red wires.

Steve
Yeah, I've built up a Hanger 9 Kantana 50 model with a Hacker A50-12s motor, 15X10 prop, 6S2P A123 battery pack with the Castle Creations 80 Amp ICE ESC with the switching BEC.

Wanted backup for the uBEC, so this model also has a Castle Creations 10 Amp uBEC. The attached JPG shows how this is wired up.


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Old 12-10-2012, 07:46 PM   #12
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The reason it's so heavy is that it's a high voltage BEC suitable for 10s liPos. This one would have been a better bet for a small model: http://www.hobbyking.com/hobbyking/s...V_5A_UBEC.html
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Old 12-11-2012, 06:22 AM   #13
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Thanks for all the info guys. The good news is it certainly oughta be able to handle the loads on this plane!

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Old 12-11-2012, 06:37 AM   #14
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Originally Posted by mclarkson View Post
Thanks for all the info guys. The good news is it certainly oughta be able to handle the loads on this plane!

Yup
I've got a Castle Creations 10 Amp uBEC on a giant scale model with seven Hitec 645MG servos in it. Its also got a two cell A123 battery backup. My onboard monitor shows that the 10 Amp uBEC has never sagged in voltage where the A123's had to kick in to help. That after about 160 flights on that 3KW model

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