Quote:
Originally Posted by E-Revonut
Some people need to understand this a little better!!! He isn't talking about the deans plug heat being transferred to his motor!!! Plugs have resistance, resistance causes heat but it also causes a drop in voltage. A drop in voltage causes amp draw to go up, Amp draw going up increases heat! If voltage is dropping because of enough resistance and increasing amp draw it will heat up all components in the system.
I use deans on 1/18 stuff, I tried them on 1/8 and didn't like them. They do get warmer than my Traxxas plugs. The Traxxas plugs offer a lot more surface area than deans do, they also stay plugged together better and are easier to plug together in a rushed battery swap.
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Yes some people do. If the resistance is in line with the motor the voltage drop is not going to make the motor draw more current, it can't it's limited by the resistance of the leads and connectors between the ESC and motor. I=V/R so just because you add resistance to the circuit the current to the motor goes down not up. The only thing is that the motor would slightly more sluggish and take longer to reach speed.
The slower a motor goes the less impedance it has and the longer the current flows to the motor. As a motor spins the impedance is near 0 and as the RPM's climb the impedance gets higher and higher until the back EMF generated counters the voltage in and the motor reaches maximum RPM for the voltage given. That's why you see these huge spikes in current and then it starts to drop the faster you go the less current is drawn. This does not take into account the actual switching of the phases as they get faster and faster with less duration as rpm increases. But it's the same, even with a brushed motor.
If the deans are hotter than the rest of your wire then you might have a bad solder job or defective connector or you applied too much heat and moved the pin out of alignment and it's not making the best connection. I have done this before and had to slightly pull them apart for them to even make connection, and I used to solder for a living. If your wires and everything is the same temp then you are just drawing a lot of current. At these power levels some of us need 8g wire.
Jeff