Wiring 2 bec's, one for each servo

[rockmike]

on my 2.2 comp tuber im going to try runnin 2 cc bec's.I wanted to start this thread to ask some of you elctronics guru's how you would go about doing this properley.

I dont want to power rx with esc at all.

So i need to wire in 2 bec's one bec power ing one servo[steering]

and one bec powering the other servo[dig]

How do i go about doing this? T.I.A. mike.

i have talked to jrh a bit about and did a search and didnt find anything so i thought i would post this,could be some helpfull tech for someone else also.

[_BEN_]

The first question you should ask is if it is really necessary?

This contraption only had one bec didn't it?
http://www.youtube.com/watch?v=32SNVXklxxs

[emaxxjeremy]

there is absolutley no reason to run 2, especially for 1 steering and 1 dig.

[Tanis]

First, because he has burned up 2 already.
Second, because JRH suggested he try that to see if it fixes the issue.

[_BEN_]

Originally Posted by Tanis

First, because he has burned up 2 already.
Second, because JRH suggested he try that to see if it fixes the issue.

Thanks for filling in the rest of the story.

Have you tried this:
Wire one ccbec normal. This will power the rx and the dig servo.

Then for the second ccbec.
-Pick up/make a female-female servo adapter and an extra male servo plug.
-De-Pin the steering servo so only the signal wire remains. Plug that into the RX.
-Take your extra male plug and put your servos (+) and (-) wires in their correct slots.
-Then plug the ccbec into one side of the female/female adapter and the servo lead with only the (+)(-) wires into the other side.

I think that might do it.

If you are handy with the iron. You could make your Female-Female adapter and get your extra male plug in one shot with this.
http://www3.towerhobbies.com/cgi-bin...?&I=LXHFN4&P=0

This link shows what wires are (+)(-)(signal) for specific brands.
http://www.fatlion.com/sailplanes/servos.html

[Tanis]

No sweat, Mike has a knack for letting the smoke out of anything, we're still trying to figure out what his Kryptonite is

[emaxxjeremy]

with 10A available from a cc bec there is a bigger problem than the bec

[_BEN_]

I edited my post with a possible solution. Not sure if it was up before the last two posts.

[rockmike]

Thanks for jumping in there nathan,Guys i have done everything i and otheres can think of to remedy this problem.After i smoked the first one i switched swervo's i switched radio's i switched motor,Its a compltely new system when i smoked the 2nd one.

I talked to J.R.H. about all these issues and he suggested that i run 2 bec's.My next plan was to run 1 with a fan.Because the packaging says the rateings of the unit are based with 5 mph airflow across unit.I have no air flow.

So im takeing jrh's advice on runnin 2 but im a bit confused how to wire it up properly with 2 and not use esc'c bec to power rx so lets please focus on the ?
I really appreciate youre help on this,im not reall great with the elctronics so this is why im here asking for youre help.

When i wire the rig everything i mean everything is shrink wrapped i have no wires grounding out.

I didnt have epa's with this other radio but i would expect if i had any issues because of that it would be smokeing servo;s not bec's.But before it goes back together i am buying a brand new mx-3 to use this time so i can have epa's.thanx again,mike.

[JohnRobHolmes]

1. Remove red wire from your ESC's rx plug
2. Plug one CC BEC into a free channel on the RX (or use a Y harness if you don't have a free slot)
3. Plug your second CC BEC into a Y harness that goes to your front servo. Clip the red and black wire right before the RX so that power only flows between BEC and servo. Only signal will go from RX to servo.


What RX are you using?

[Mortimer Snerd]

JRH is the man regarding this stuff, but I have to second the opinion that something is wrong elsewhere in your system. I have a hard time imagining a scenario where 2 servos of almost any size would max out a CC BEC. Maybe a BEC problem?

[rockmike]

Originally Posted by JohnRobHolmes

1. Remove red wire from your ESC's rx plug
2. Plug one CC BEC into a free channel on the RX (or use a Y harness if you don't have a free slot)
3. Plug your second CC BEC into a Y harness that goes to your front servo. Clip the red and black wire right before the RX so that power only flows between BEC and servo. Only signal will go from RX to servo.


What RX are you using?

i just orderes new airtronics mx-3 so i will have a new radio and rx and new steering servo when this all goes back together this time.You could say im alittle skitish about this.

[Blood_Clod]

Originally Posted by emaxxjeremy

with 10A available from a cc bec there is a bigger problem than the bec

[rockmike]

Originally Posted by Mortimer Snerd

JRH is the man regarding this stuff, but I have to second the opinion that something is wrong elsewhere in your system. I have a hard time imagining a scenario where 2 servos of almost any size would max out a CC BEC. Maybe a BEC problem?

It has to be a bec problem,im just the most unluckiest bastard on the planet when it comes to elctronics.Im not an idiot i know how to wire things properly and if im not 100% sure i ask.

I know a few otheres that have smoked these also but they have done somthing wrong like not unhook the red wire on the esc,or have not shrink wrapped connection proper and have grounded out.

[LIKES2CRAWL]

I am a local and have seen and gone over this setup with Mike, everything looks right . I'm begining to think that Castle may have a bad batch of BEC's out there, cause I too am having issues with one and it likes to shut down my system. I swapped it out with a MPI bec and the setup works fine.

[_BEN_]

I'm now wondering if my setup is similar to your's. Do you you guys have any photos by any chance?

[rockmike]

Originally Posted by LIKES2CRAWL

I am a local and have seen and gone over this setup with Mike, everything looks right . I'm begining to think that Castle may have a bad batch of BEC's out there, cause I too am having issues with one and it likes to shut down my system. I swapped it out with a MPI bec and the setup works fine.

Interesting,so thats what you determind huh.That sucks ass cause eddie was unable to run in super class because of his issues,and i got hosed out of a better placeing cause my rig died on stage 3 and had to take a repair and didnt have enough time to complete stage 3 so i took a dnf

well we will no for sure after i wire in 2 of these cause we all know this is serious over kill.

[rockmike]

Originally Posted by _BEN_

I'm now wondering if my setup is similar to your's. Do you you guys have any photos by any chance?

Wish i could ben,but i dont have a vid card on my work puter[this is where i do all my posteing]

When i want to share i usually have likes2crawl come over and take pics and post for me.

But he needs to come over and give me his ax-10 trans soon so i can build him an A2D2 trans.hint hint.
dennis came by the store today and saw the heatsink i built for my 5995 servo and he wants one so he may have jumped in front of ya for machining projects,honestley i would rather get youre a2d2 built so you can have a consistent dig. He can get by without a heat sink for a while.

[SVEN]

I would just bypass the reciever altogether with the BEC's. One Y harness per BEC, leave the read wire out of the servo connectors that plug into the RX.
And then use the Mamba's internal BEC to power the RX (leave the red wire in the plug for the speed control).

[rockmike]

Originally Posted by SVEN

I would just bypass the reciever altogether with the BEC's. One Y harness per BEC, leave the read wire out of the servo connectors that plug into the RX.
And then use the Mamba's internal BEC to power the RX (leave the red wire in the plug for the speed control).

this actually seems to be the best way to do it to me,so thanx for youre input,the current and just go directly to the servo's.

Thanks guys for youre help and i will report back to this thread and let you all know what happens.[crossing fingures]