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Old 06-26-2011 | 12:13 PM
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DJLeonardo
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Joined: Aug 2010
Posts: 250
From: Amsterdam, The Netherlands
Default servo current draw

I'm looking for an overview on current that popular servos draw.

I have a few myself and I recently found that one of them is drawing a lot more then I expected. I want to know this to just do some math.

I have:

Hitec 7955TG
Savox 1258 TG
Ace DS1015


I know the Hitec:
Operating Speed (4.8V): 0.19 sec/60° at no load
Operating Speed (6.0V): 0.15 sec/60° at no load
Stall Torque (4.8V): 250oz/in. (18kg.cm)
Stall Torque (6.0V): 333oz/in. (24kg.cm)
Idle Current Drain (4.8V): 9mA at stop
Idle Current Drain (6.0V): 9mA at stop
Current Drain (4.8V): 220mA/idle and 3.4 amps at lock/stall
Current Drain (6.0V): 300mA/idle and 4.2 amps at lock/stall

and that is more my Hobbywing BEC is providing. I know it does 5A peaks and the 7955 is prbably not drawing that continuesly but still... I realised there is not much known about this. Should I consider getting a bigger BEC (the CC one) for the Hitec servos?

Now, I recently installed my Savox and it was doing even less on the MMPs internal BEC so it apears as if this one draws even more..... Installed a CC BEC in that car and it now works flawlessly.

What about the ACE? (will be installed in my Mugen with a hobbywing BEC) how powerhungry is that one?

So who has current draw numbers on the other servos?
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