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BEC Volts and servos

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Old 12-14-2008, 10:41 PM
  #1  
Tripp_
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Default BEC Volts and servos

wondering if anyone can help. I am building a trex 450. I just need to know if it is vary important to run the cyclic servos (mg-65s) at 6 Volts. The scorpion 55A comander ESC says it puts out 5 Volts from the Bec witch is great for my tail servo (futaba 9257). So my question is if i run my cyclic servos at 5V instead of 6V is that a bad idea, will they not run as well as they could?
And if it is better to run them at 6V then what is the best way to do so? should i get the scorpion 55A with a seperate external BEC that puts out 6V?
Any advice in this area whould be great.
Old 12-15-2008, 06:45 AM
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ace22459
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Default RE: BEC Volts and servos

They will work ok, they just won't be as fast. The HS 65mg's are rated at .16 sec. for 5 volts and .13 sec. at 6 volts. Torque will also be a little higher at 6 volts.
Old 12-15-2008, 01:29 PM
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noobflyer01
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Default RE: BEC Volts and servos

i'd go with an external bec. and besides the bec doesnt costs that much but can do so much
Old 12-15-2008, 04:27 PM
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Default RE: BEC Volts and servos

I used a separate BEC and loved it. As the battery drained I didn't have any issues with the control getting mushy, the BEC sent a steady 5v to the servos throughout the whole flight.
Old 12-15-2008, 04:31 PM
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exeter_acres
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Default RE: BEC Volts and servos


ORIGINAL: HeliTB

the BEC sent a steady 5v to the servos throughout the whole flight.

A built in BEC would do the same thing.....

if you are below 5v.....then you have other problems.....
Old 12-15-2008, 05:22 PM
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BarracudaHockey
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Default RE: BEC Volts and servos

Yep. For a beginner it really doesnt matter, anywhere between 5 and 6v to the cyclics is fine.

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