3900kV Brushless System
An easy, affordable upgrade from brushed or stock brushless systems!
The Element 3900kV Brushless System is designed specifically for use with lightweight 1/10 scale 2WD off-road vehicles, including buggies, trucks and short course trucks. The programmable ESC and powerful 4-pole motor mount easily; after installation a simple throttle setup is all you need to get going!
- Turn your 2WD RTR model into a serious racing machine!
- The 4-pole, 3900kV motor delivers more torque with greater efficiency.
- The ESC's high level of adjustability allows for fine tuning to enhance performance even more.
The 4-pole, 3900kV sensorless brushless motor delivers more torque with greater efficiency, to meet the demands of today's off-road vehicles.
Motor Specifications:
Dimensions: 1.42 x 1.85 in (36 mm x 47 mm)
Weight (w/wires): 6.54 oz (185.4 g)
kV (RPM/V): 3900kV
Voltage Input: 2S MAX
Shaft Diameter: 0.125 in (3.175 mm)
Poles: 4
Wires: 13AWG Silicone, 6.89 in (175 mm)
Connectors: 4 mm Male bullet connectors
ESC Specifications:
Voltage Input: 2S-3S LiPo (7.4V-11.1V); 6-10 NiCd/NiMH (7.2V-12V)
BEC: 3A @ 2S input
Current Rating: up to 100A
Dimensions: 1.81 x 1.38 x 0.79 in (46 mm x 35 mm x 20 mm)
Weight: 2 oz (56.5 g)
Motor Wires: 13AWG 5.3 in (135 mm), including female bullet connectors
Battery Wires: 13AWG 4.72 in (120 mm), with Deans® Ultra Plug®
Receiver Wire: 11.0 in (280 mm), with Universal radio connector
Motor Limit: on 2S/4200kV Max; on 3S/2800kV Max
Protections: low voltage cutoff, thermal protection
The heat sink's cross-ventilation offers better cooling for more efficient operation.
ESC Programmable Features*:
Brake/Reverse Type – sets whether reverse is enabled or not, and how it is accessed.
Brake Amount – sets what percentage of available braking power is applied with full brake.
Reverse Amount – sets how much power will be applied in reverse, if reverse is enabled.
Punch/Traction Control – designed to smooth high power starts and limit punch when you don't want 100% battery power in every situation. The lower the setting the less throttle change limiting there is; for softer acceleration or for running on low-grip surfaces, raise it to a higher setting.
Drag Brake – sets the amount of brake applied automatically at neutral throttle to simulate the slight braking effect of a neutral brushed motor while coasting.
Dead Band – lets you adjust the throttle sensitivity width at neutral. Smaller values make the controller enter forward or brake/reverse with a smaller movement of the throttle trigger for finer control.
Cut-Off Voltage – sets the voltage at which the ESC removes power from the motor in order to maintain the battery at a safe minimum voltage (LiPo), or to keep the radio system working reliably (NiCd/NiMH).
Motor Timing – allows for lowering or raising the timing advance to the motor to reduce or increase amp draw, run time, motor/battery temperature and top speed and punch.
*ESC can be programmed manually, with the Castle Field Programming Card or through the Castle Link software interface.