The Jazz 55-10-32 has no problems braking a Neu 1512 or neu 1515 on 10s1p A123 (comparable to 8s lipos). If i want to i can lock all wheels. when i do have to much grip the car will make a front flip when i'm too hard on the brakes. That's why i reduced brake to 95% on my remote.
11lbs truggy with Neu 1512 (1400kv):
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Same Truggy with Neu 1515/2Y (1100kv):
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The Jazz ESC is able of peak Amps above 120A eventhough it's only speced for bursts up to 65A.