Tekin RX4 Waterproof ESC – Compare and Unboxing

The long awaited Tekin RX4 Waterproof ESC (electronic speed control) has hit the RC market. Let’s take a look at the specs and what the new “sweet spot” ESC brings to the world of RC.

The long running RX8 (generation 3 now) has been the go to ESC from Tekin for its power and reliability. Being the only ESC capable of running over 2s lipo voltage, the RX8 was the only option for many of us to use. Now with the RX4, we have a speed control that offers the same power handling but in the mid line category of 2s to 6s lipo voltage.


RX4 vs RX8

The Tekin RX4 Waterproof ESC is very similar in size to the RX8 (generation 2) and has a slightly smaller footprint in length and height. The soldering posts have also been reduced in height and are a bit easier to solder on to. The RX4 case is a bit stronger in structure and of course has the element proof feature.


RX4 Target RC Vehicle

The Tekin RX4 Waterproof ESC was designed to stand up to the elements of almost any offload environment. Specifically targeting the Rock Racing, Crawling and Scaling.


Element Proof

Tekin states that the new RX4 can withstand: Rocks, Dirt, Snow, Sand, Mud, Trail and Track; the RX4 is no-limits RC fun. Tekin also states the the RX4 is waterproof, but with an asterisk – *Waterproof in sensorless operation only. Dielectric Tek Grease provided for waterproofing sensor ports.


Tekin RX4 Waterproof ESC Features

*HardBox Waterproof Design
Ultra-smooth and Precise Throttle and Braking Control
Compatible with Sensored/Sensorless Brushless and Brushed Motors
Easily Access Programming, Anywhere, Anytime
Datalogging Capability
High Voltage Programmable BEC
EZ Access HotWire Programming Port
HotWire PC Interface for Advanced Programming and Updating
D2: Dual Drive Mode Technology
On-Board Temperature Indicator
HDAC: High Density Copper PCB
**Sensor Plug for Precise Commutation with all Motors
Gold-plated Solder Posts for Easy Wire Replacement
Self Test Diagnostics and Factory Reset
Pit Tune Mode
DGF2: Digital Glitch Filtering V2
QuickTune™ Programming
One-Touch Radio Calibration

* Waterproof in sensorless operation only. Dielectric Tek Grease provided for waterproofing sensor ports.
**The RX4 is not intended for operation while submerged in liquid.

Tekin RX4 Waterproof ESC Specifications

Controls: Forward/Brake/Reverse
Input Voltage: 2S-6S LiPo
BEC: 6.0v / 7.4v @ 8amps
Motor Limit Brushless Mode: 2S –  5700kV 4-pole, 3S –  3100kV 4-pole, 4S –  2300kV 4-pole,   5S – 1800kV 4-pole, 6S – 1200kV 4-pole
Motor Limit Brushed Mode: No Limit
Max Current: 240amps per phase (Per Mfg Specs)
Timing Profiles: 7 choices (on board)
Brushed Modes: FWD Only / FWD-REV / FWD-REV Delay
Brushless Modes: FWD Only / FWD-REV / FWD-REV Delay
Dimensions:  1.6 x 2.0 x 1.4″ / 40.6 x 50.8 x 35.5mm
Weight: 2.65oz / 75.5g

Do you have the perfect RC for the new Tekin RX4 Waterproof ESC? Have you been waiting for a “sweet spot” ESC to handle 2s-6s power? Comment below!

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