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Old Jan 19, 2013, 03:11 PM
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Originally Posted by abenn View Post
Neither of the servos you mention are rated for over 6.0v. Since you say the JR servo was not connected to anything when it fried, I guess you've demonstrated their voltage limitation.

Reversed servo connection shouldn't have caused any damage, but the servo would not work at all when reverse-connected because it wouldn't be getting any signal from the receiver.
Do you not think that the servo manufactures do not know what nominal voltage and charged voltage of a 6.0v battery is? Both servos give a spec for 6.0v. If it wasn't rated for 6.0 volt they wouldn't have specs for it. A 5 cell nimh/nicad go over 7 volts when fully charged. A123's do the same thing. People have been doing this for years.

ds821=Speed: .19 sec/60 @ 4.8v .15 sec/60 @ 6v ,Torque: 72 oz-in @ 4.8v 88 oz-in @6v

Futaba 3152 = Speed: .22 sec/60 @ 4.8V.,,18 sec/60 @ 6V Torque: 70 oz-in @ 4.8V , 87 oz-in @ 6V

I would look for a crossed up wire somewhere.
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