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servo power supply help.

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Old 01-13-2013, 07:12 AM
  #1
captaincrunch111
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Default servo power supply help.



Hi, im putting together a sbach300 with a dle 30. Im new to petrol power and the largest model i have is 60 size glow so this is a bit bigger than im used to.Im putting in 5 savox sc0252mgservos and was wondering will i need a separate power supply for the servos or will they be ok to go through the rx. Any advice on what else i should do would be great. Thanks.

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Old 01-13-2013, 08:02 AM
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Default RE: servo power supply help.

Your reciever battery will power your servo's. You need a seperate battery for your engine ignition. Good Luck, Dave
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Old 01-13-2013, 11:36 AM
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Edwin
 
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Default RE: servo power supply help.

I use three batteries in my bigger gassers. (rec only, servos, ignition) I fly spektrum so keeping the receiver on its own battery is insurance against voltage sag due to high current servos. I use a split power bus from servo city, http://www.servocity.com/html/servo_power_boards.html . Thats the cheap version. There are others from smart fly with built in regulators. I dont fly 3D so weight is not much of an issue for me. But I imagine it is in the aerobatic world.
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Old 01-28-2013, 11:45 PM
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dadragon
 
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Default RE: servo power supply help.

EDWIN +1 and all 3 systems are on 6V 2700mah batts.George
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Old 01-29-2013, 05:00 AM
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jetmech05
 
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Default RE: servo power supply help.

Power through the receiver will be ok...must people that fly gassers will run 2 batteries for system through a batt share of some sort or with an additional battery through the receiver (not the best choice) and the 3rd battery for iginition. Also get an optic kill switch...will shut down the engine in case of a total loss of power to the receiver...and give you an additional way to kill the engine from the transmitter
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Old 01-29-2013, 06:06 AM
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BarracudaHockey
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Default RE: servo power supply help.

Get an A123 with two leads, run one to the reciever, one to the ignition with a voltage drop down diode, heavy duty switches on both the ignition and reciever line.

Those servos are fine running off the power bus on the reciever and you dont need a separate battery on a little plane like that.

WrongwayRC.com has everything you need.

+1 on the optical kill!
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