Traxxas has gone brushless, with an all-new, all-Traxxas power system! The Velineon-3s speed control auto-detects motor type (sensored/sensorless/brushed) and has low-voltage protection for use with LiPo packs. And it can handle 12.6 volts, so 3S LiPo and 10-cell sub-C packs are no problem
The Velineon-3s speed control has a large setup button, lensed LED for easy viewing at any angle, plug-in power wires, a built-in power lead for an optional fan, and a covered port for sensor the sensor harness (if you choose to use a sensored motor). Race Mode (forward only) Training Mode (50% throttle forward/reverse) and Sport Mode (full forward/reverse control) are easily selected.
Info from RC Zone |