Well I for one welcome a reversing brushless controller. I am not thrilled with the lack of water cooling or low voltage limits but if the price it rite it can be a way for guys to go brushless cheap. Allways a good thing :)

Velineon 3500 Features
Ultra high-temperature sintered Neodymium magnets provide
massive torque and linear power
Optimized for power and efficiency in 1/10th scale vehicles
Consistent, high-power output, run after run
Low-maintenance, unique Traxxas design
Efficient, high-speed ball bearings
Low maintenance design
Precision-balanced rotor
Solder tabs
Protective end cap
10-Turn, 3500kV
Rebuildable
Hex hardware
Brilliant blue-anodizing finish
Silicon steel laminations
Delivers more power than comparable brushed motors

Velineon VXL-3s Features
The VXL-3s auto-detects the motor type for brushless and sensored brushless motors.
Traxxas High-Current Connector eliminates a common bottleneck and maintains pure, unrestricted power flow from the battery to the brushless power system.
Built-in two-stage low voltage detection for Lithium Polymer (LiPo) battery use provides a clear signal to the driver that the battery pack is nearing its minimum voltage threshold.
Widest range of battery options ranging from 4-cell NiMH or NiCad packs all the way up to 3S LiPo battery packs (11.1 volt)
The patent-pending Training Mode™ is an exclusive Traxxas feature that reduces the overall power output of the VXL-3s by 50%, making it easier for new or younger drivers to control their model. When they’re ready, simply change profiles to unleash full-throttle action.
Advanced circuit design allows sensorless brushless motors to operate with the smoothness and precision of the best brushed systems. There’s no need for additional sensor wiring and hardware complexity.
The EZ-Set® push-button setup operates and programs just like other Traxxas speed controls such as the XL-5. This eliminates the need to learn a new set of procedures.
The VXL-3s is programmable with three drive profiles:
Sport Mode – Fwd / Brake / Rev
Race Mode – Fwd / Brake
Training Mode™ – 50% Fwd / Brake / 50% Rev
Multi-color LED provides clear feedback
Since the VXL-3s allows experimentation with many kinds of motors, it is equipped with numerous failsafe features to help protect against common mishaps that can cause other systems to fail.
Two-stage thermal shutdown protection protects the VXL-3s from overheating.
Locked Rotor Protection™ prevents system damage by cutting power if the vehicle is stuck or the motor is bound.
Sensor Phase Detection™ protects against improperly wiring aftermarket sensored motors.
Sensored Motor Backup protection causes the VXL-3s to switch to sensorless operation if a motor sensor fails or sensor wires become disconnected. Sensored motors can be used without connecting the sensor wires to the sensor port on the ESC.
Battery Over-Voltage Protection™ causes the ESC to go into failsafe mode if the maximum input voltage is exceeded.
Water resistent case design uses rubber seals and o-rings to protect against damage caused by water and moisture.
Micro-fin aluminum heatsink dissipates heat.
The built-in auxiliary fan output powers a snap-on accessory fan for increased cooling capacity during extreme use. A handy clasp on the speed control case keeps the wire neatly in place until you are ready to use it.
MOSFET design provides high-current output (320 amp peak) with incredibly low resistance (.00075 (ohm)).
Gold plated 3.5mm bullet connectors on 12-gauge Maxx® Cable flow full power to the motor without performance strangling resistance.
VXL-3s ESC SPECIFICATIONS
Input voltage: NiCad/NiMH 4-9 Cells
(4.8 to 10.8 Volts DC)
Input voltage: LiPo 2-3 Cells (7.4 to 11.1 Volts DC)
Case Size: 39mmW x 55mmD x 33mmH
Weight: 90 grams
Motor Limit: None
On Resistance Forward: 0.00075 Ohms
On Resistance Reverse: 0.00075 Ohms
Peak Current - Forward: 320A
Peak Current - Reverse: 320A
Braking Current: 320A
Continuous Current: 200A
BEC Voltage: 6.0V
BEC Current: 2.5A (with 6-cell NiMh)
Power Wire: 12 Gauge Maxx® Cable
Input Harness Wire: 26 Gauge / 100mm
Transistor Type: MOSFET
Low Voltage Detection: Auto-detect (2-S or 3-S Lipo),
2-Stage indicators, switchable
(on or off)
Thermal Protection: 2-Stage thermal shutdown
Profile selection: Profile 1: Sport Mode:
100% fwd, 100% brakes, 100% rev
Profile 2: Race Mode:
100% fwd, 100% brakes, no rev.
Profile 3: Patent Pending Training Mode™:
50% fwd, 100% brakes, 50% rev.
Single-button setup: Yes, Traxxas EZ-Set®
Battery Input Connector: Traxxas High-Current Connector
Motor Types (Autodetect): Brushed, brushless, sensored brushless
Ports: RX Input, motor sensor, auxiliary fan

Velineon 3500 Features
Ultra high-temperature sintered Neodymium magnets provide
massive torque and linear power
Optimized for power and efficiency in 1/10th scale vehicles
Consistent, high-power output, run after run
Low-maintenance, unique Traxxas design
Efficient, high-speed ball bearings
Low maintenance design
Precision-balanced rotor
Solder tabs
Protective end cap
10-Turn, 3500kV
Rebuildable
Hex hardware
Brilliant blue-anodizing finish
Silicon steel laminations
Delivers more power than comparable brushed motors

Velineon VXL-3s Features
The VXL-3s auto-detects the motor type for brushless and sensored brushless motors.
Traxxas High-Current Connector eliminates a common bottleneck and maintains pure, unrestricted power flow from the battery to the brushless power system.
Built-in two-stage low voltage detection for Lithium Polymer (LiPo) battery use provides a clear signal to the driver that the battery pack is nearing its minimum voltage threshold.
Widest range of battery options ranging from 4-cell NiMH or NiCad packs all the way up to 3S LiPo battery packs (11.1 volt)
The patent-pending Training Mode™ is an exclusive Traxxas feature that reduces the overall power output of the VXL-3s by 50%, making it easier for new or younger drivers to control their model. When they’re ready, simply change profiles to unleash full-throttle action.
Advanced circuit design allows sensorless brushless motors to operate with the smoothness and precision of the best brushed systems. There’s no need for additional sensor wiring and hardware complexity.
The EZ-Set® push-button setup operates and programs just like other Traxxas speed controls such as the XL-5. This eliminates the need to learn a new set of procedures.
The VXL-3s is programmable with three drive profiles:
Sport Mode – Fwd / Brake / Rev
Race Mode – Fwd / Brake
Training Mode™ – 50% Fwd / Brake / 50% Rev
Multi-color LED provides clear feedback
Since the VXL-3s allows experimentation with many kinds of motors, it is equipped with numerous failsafe features to help protect against common mishaps that can cause other systems to fail.
Two-stage thermal shutdown protection protects the VXL-3s from overheating.
Locked Rotor Protection™ prevents system damage by cutting power if the vehicle is stuck or the motor is bound.
Sensor Phase Detection™ protects against improperly wiring aftermarket sensored motors.
Sensored Motor Backup protection causes the VXL-3s to switch to sensorless operation if a motor sensor fails or sensor wires become disconnected. Sensored motors can be used without connecting the sensor wires to the sensor port on the ESC.
Battery Over-Voltage Protection™ causes the ESC to go into failsafe mode if the maximum input voltage is exceeded.
Water resistent case design uses rubber seals and o-rings to protect against damage caused by water and moisture.
Micro-fin aluminum heatsink dissipates heat.
The built-in auxiliary fan output powers a snap-on accessory fan for increased cooling capacity during extreme use. A handy clasp on the speed control case keeps the wire neatly in place until you are ready to use it.
MOSFET design provides high-current output (320 amp peak) with incredibly low resistance (.00075 (ohm)).
Gold plated 3.5mm bullet connectors on 12-gauge Maxx® Cable flow full power to the motor without performance strangling resistance.
VXL-3s ESC SPECIFICATIONS
Input voltage: NiCad/NiMH 4-9 Cells
(4.8 to 10.8 Volts DC)
Input voltage: LiPo 2-3 Cells (7.4 to 11.1 Volts DC)
Case Size: 39mmW x 55mmD x 33mmH
Weight: 90 grams
Motor Limit: None
On Resistance Forward: 0.00075 Ohms
On Resistance Reverse: 0.00075 Ohms
Peak Current - Forward: 320A
Peak Current - Reverse: 320A
Braking Current: 320A
Continuous Current: 200A
BEC Voltage: 6.0V
BEC Current: 2.5A (with 6-cell NiMh)
Power Wire: 12 Gauge Maxx® Cable
Input Harness Wire: 26 Gauge / 100mm
Transistor Type: MOSFET
Low Voltage Detection: Auto-detect (2-S or 3-S Lipo),
2-Stage indicators, switchable
(on or off)
Thermal Protection: 2-Stage thermal shutdown
Profile selection: Profile 1: Sport Mode:
100% fwd, 100% brakes, 100% rev
Profile 2: Race Mode:
100% fwd, 100% brakes, no rev.
Profile 3: Patent Pending Training Mode™:
50% fwd, 100% brakes, 50% rev.
Single-button setup: Yes, Traxxas EZ-Set®
Battery Input Connector: Traxxas High-Current Connector
Motor Types (Autodetect): Brushed, brushless, sensored brushless
Ports: RX Input, motor sensor, auxiliary fan
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