I bought a high spped servo from hobby partz for my ecx torment to try make it turn better. When I put it in the truck and turned it on it makes a sizzleing noise( which I hear is normal) So with a fresh charged battery I tried driving the truck. It went about a foot and died and then started acting up( wheels turning back and forth and actually getting stuck in forward). I charged the battery on my new thunder ac680 charger. ( not sure why it says it charged it to 9.2 volts when it is a 7.2 volt battery). So I know there is enough of a charge. All the electronics,radio, motor, etc are stock, also the battery is a 1800mh nimh battery. does anybody know what this problem is and how to fix it. Also why doss the charger charge it so high, isn't it supposed to sense the battery voltage and adjust it. Thanks

As for the servo I'd guess the new servo is trying to draw too much voltage from your receiver, and if it hasn't already fried it its causing electrical interference that makes the car glitch. Test by putting the old servo back in the car. If all is well then your electronics are still OK, and you'll need to try a lower draw servo or try adding a glitch-buster capacitor to your receiver.

The battery question is simple, your cells are behaving normally. You have 6 cells, rated at 1.2V each for a total of 7.2V rating. When your pack is fully charged, the cells can read up to 1.5V each which is normal, and gives you 9V. We had several 6-cell NiMH packs that would read 10V when fresh and hot off the charger. This is referred to as the 'peak' and usually only lasts a lap or two before your cells settle to their normal voltage.

ok, thanks. Should a new servo have acted like that, or is something wrong with it. I bought it hoping to make my truck better. Will adding a resitor fix my servo problem. I need a high speed, high torque servo since it is a short course truck run on a very tight track.

Get a quality brand, like hitec or savox

IMO you get what you paid for

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