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11-25-2013, 04:51 AM
| #1 |
| Newbie Join Date: Nov 2013 Location: Australia
Posts: 4
|  Bigger BEC required?
Hi all, I am new here so go easy on me! I am building my first crawler and am putting all the goodies on it including rear steer and a dig kit servo. I have installed a castle 10a BEC set to 6.2v. My steering servos are ace DS1015's and my dig servo is a futaba S9350. ESC is a standard out of the box axial wraith one. When I operate my four wheel steer slowly or normally, everything is fine, but when turn it faster, all my servos twitch hard and my ESC twitches some power at the motor. I think the receiver is even shutting down for a sec as the light goes to red. Is this happening because I am pulling too much power through my BEC and infact I really need a bigger one? Thanks |
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11-25-2013, 08:05 AM
| #2 |
| I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
| Re: Bigger BEC required?
Your servos are ~200inoz each (for steering.... Ace RC DS1015 Servo Specifications and Reviews ), so a single CC 10A BEC should be fine. Is the BEC direct to the servos or through the RX? I will guess through the RX, if so, did you pull the red wire from the ESC to the RX? You should. Have you checked for binding in the steering linkage? Have you properly set the steering EPA's? |
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11-25-2013, 08:17 AM
| #3 |
| Newbie Join Date: Nov 2013 Location: Australia
Posts: 4
| Bigger BEC required?
Yep, done all that. BEC is through the RX and have pulled the red wire as needed from the ESC
Last edited by Trxvy; 11-25-2013 at 08:20 AM. |
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11-25-2013, 08:19 AM
| #4 | |
| I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
| Re: Bigger BEC required? Quote:
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11-25-2013, 08:21 AM
| #5 |
| Newbie Join Date: Nov 2013 Location: Australia
Posts: 4
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You beat me to it, typo fixed now!
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11-25-2013, 08:25 AM
| #6 | |
| I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
| Re: Bigger BEC required? Quote:
 OK, serious, sounds like it's set-up correctly, not quite sure what to recommend. A single CC 10A BEC can handle a single servo of ~500inoz, so itshould be fine for you. Maybe try a "Y harness" and run the BEC direct to the servos? | |
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12-05-2013, 03:09 AM
| #7 |
| Newbie Join Date: Nov 2013 Location: Australia
Posts: 4
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Still got this issue, even with running power directly to servo. Anyone else got any ideas?
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12-05-2013, 05:04 PM
| #8 |
| Rock Crawler Join Date: Jan 2013 Location: Middleburg Florida
Posts: 920
| Re: Bigger BEC required?
I have a single CCBEC working 2 444 oz savox servos just fine. Do you have a volt meter? If so find a way to put it on the BEC output, turn the system on and do your turns, watch and see if the voltage is dropping any. If not, disconnect one servo and give it a few good fast turns, if all is good, try the other the same way. But only 1 servo at a time. Keep a check on BEC output voltage for each test. You may have a bad servo pulling everything down.
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