Originally Posted by
WALZ
hobbywing justock 45amp resistance .0006ohm $50
Tekin Pro black ed. resistance: 000096ohm. $230
Orion hmx 10 resistance .000033 $375 “1/3 resistance of Tekin”
Makes me wonder if there is more resistance in the solder joints.
Your intuition is pretty much correct. Once the ESC resistance is below a certain point, then it really doesn't measurably affect the motor power.
Some manufacturers spec the resistance per phase, but two phases are always in series, so the actual resistance is double the value specified. Once the resistance is below 0.1% that of the motor+battery resistance, then power loss will be inconsequential. A 25.5T motor doesn't need nearly the same ESC as a 17.5T!
I suggest you choose an ESC with the features and "feel" you desire, from a manufacturer that you trust. If you already own that ESC, then you are all set!
Oh, and I almost forgot: if your track runs under ROAR rules, make sure your ESC is on the ROAR-approved list, and is using the appropriate software version (if applicable).
