See it move at 9:23 - I have been working like mad getting this Rock Bouncer done! Finally, my dual Tekin RX4 Element Proof Electronic Speed Controls came in, and I was able to get to work with proper mixing from my Futaba T4PK radio. I have now linked up all electronics, setup the 4WS (Rear Steer) and Independent Motor control on each axle. I can now change the speed (rotation), and power of axle axle on the fly.
Build List:
Rock Bouncer Cage (got it through a trade from my friend Luke)
2 Savox SW-1210SG Waterproof Servos
2 RC4WD Bully 2 Rock Comp MOA Axles
2 Tekin 30t Pro Hand Wound Brushed Motors
2 Tekin RX4 Electronic Speed Controls
2 Gens Ace 2200mah 3s Lipo Batteries
1 Futaba T4PX Radio / 4 channel Transceiver combo
1 Aluminum Skid Plate (Wraith)
Full set of 4mm Titanium Beef Links
4 GMade ZERO Coil Shocks (100mm)
4 RC4WD Ballistic Bead Lock Wheels
4 RC4WD Genius Tires (2.2)
4 Wheel Widers (12mm Hex)
Here is some info from the TEKiN website on the new RX4 Hardbox ESC: ()
"Tekin’s RX4 Brushless Sensored ESC is designed to power your chassis past any obstacle. With massive power handling capabilities, a waterproof* design and all the customization features you’d expect from a Tekin ESC; the RX4 has you covered no matter the situation. Not only reliable, this ESC has a host of built in features like a High Voltage BEC, Drag Brake, Data Logging and the ability to run either Brushed or Brushless motors. The RX4 defines versatility.
The RX4 Housing is a thick-walled, reinforced Hardbox design able to withstand the elements and rough environments that come with true Offroad adventuring.
Rocks, Dirt, Snow, Sand, Mud, Trail and Track; the RX4 is no-limits RC fun.
*Waterproof in sensorless operation only. Dielectric Tek Grease provided for waterproofing sensor ports."
RX4 ESC SPECS:
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
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"
I am powering the dual ESC setup, the dual servo setup and my receiver with dual 3s 2200mah Lipo Batteries for a total of 6s lipo - but only 11.1v going to each motor.
Later in this video I demonstrate the advantages of rear wheel steering as well as independent control of each motor. Of course, it is only an inside demonstration - and an outdoor trail video is certainly warranted in the coming weeks. I want to do something special for this rock buggy... let's see if I can pull it off!
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