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03-02-2011, 11:58 AM
| #1 |
| Quarry Creeper Join Date: Oct 2010 Location: Ukraine
Posts: 400
|  do i need a bec?
Guys, i.m switching from rooster crawler to fxr and the question is do i really need a bec? I loved the rooster, it has 5 amps bec, so the servo did well. Fxr seems to have 3 amps only and i wonder will it handle the 200 oz servo in a decent way... I run ax10 with no dig. Please, advise. Thanks |
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03-02-2011, 12:19 PM
| #2 |
| Quarry Creeper Join Date: Feb 2009 Location: Orangevale
Posts: 223
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The FXR still puts out 6 volts on the internal BEC so you should be fine. If for some reason you are running a servo that can take more than 6 volts, then you should buy an external Ubec.... GL, CH |
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03-02-2011, 12:25 PM
| #3 |
| RCC Addict  Join Date: Jan 2008 Location: Mount Juliet
Posts: 1,287
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I say when in doubt....run a BEC. If you do not run one, the chance of "Magic Smoke" definitely increases....especially on 3 cell Lipo. I run one on EVERY car/truck that I own. A $20 BEC is an inexpensive way to keep your servo running smoothly, and the ESC from burning up. The Castle 10amp BEC comes factory set at 5.1v....to get to 6.0v either have your LHS program it, a buddy program it, or buy a Castle Link.
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03-02-2011, 02:01 PM
| #4 |
| I wanna be Dave Join Date: Jan 2009 Location: By a lake in Thornton
Posts: 2,218
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Look at it this way, How much did your ESC cost? $90? How about the Servo? $100+? A BEC is $20, and can very well save your FXR from smokin. Especially if you one day step up to a 400oz+ 7.4v servo |
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03-02-2011, 02:08 PM
| #5 |
| RCC Addict Join Date: Jun 2009 Location: California
Posts: 1,494
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You need a BEC. Yes the FXR can put out 6V, but thats not the problem. Its how many amps that matters. Believe it has 2 amps  The only ESC that can work for a crawler without running a external BEC would be the Holmes Hobbies ESC. When your tires binds between rocks is when you pulling amps. |
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03-02-2011, 11:47 PM
| #6 | |
| Quarry Creeper Join Date: Oct 2010 Location: Ukraine
Posts: 400
| Quote:
 ThanksIn the first post i put to doubt that 3amps will handle it. I was right then  Thanks man! | |
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03-03-2011, 05:28 AM
| #7 |
| Rock Stacker Join Date: May 2010 Location: brunei
Posts: 76
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sorry to hijack but is there a difference between BECs for brushless and brushed? I have a HH BRXL powered by a 3s and would like to run 2 servos for 4ws.
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03-03-2011, 06:18 AM
| #8 |
| Quarry Creeper Join Date: Oct 2010 Location: Ukraine
Posts: 400
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there is no diff
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03-03-2011, 07:36 AM
| #9 |
| Pebble Pounder Join Date: Jan 2009 Location: San Mateo
Posts: 128
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there is never a question of if you need one. the answer is always yes. if you want the full potential out of your servo.
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03-03-2011, 11:24 AM
| #10 |
| Pebble Pounder Join Date: Sep 2009 Location: "the valley"
Posts: 124
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yes, you need one. the difference is astronomical from not having one and having one. speed AND power are more consistent. |
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