This is a review I did for FlipSky.  They sent me me a Dual FSESC4.20 100A to test, these are my opinions based on these tests.  You can see the original post and the discussion that followed here.

This is my review of the FlipSky Dual FSESC4.20 100A. This dual ESC is the same price as many other single VESC’s, it’s definitely a value. I am so surprised at how well this ESC performed. Your not going to build a racing board with it, but for a mid-range ESC it performs above average.

Before I get into performance, which can vary based on the gear used on abuild I want to list the gear that I used.

Moonshine Hooch 38in Deck
97mm ABEC Flywheels
x2 170kv BLDC Motors
11/36 Gearing
10s4p Samsung 30q Battery Pack

I got speeds as high as 27 mph, which is as fast as the gearing allows on this build. It took some experimenting to find the “sweet spot” in the config to get the most speed & torque while conserving the hardware and battery life. This is the configuration options I ended up using.

Motor Current Max : 30A
Motor Current Max Brake : -30a
Battery Current Max : 50A
Battery Current Max Regen : -40A
Absolute Maximum Current : 120A

I did FOC detection in the beginning, just to make sure it would work, and it did. I then went back to BLDC as I wanted to get a feel for the ESC’s operation without losing the sound of the motors to get a better feel for performance.

I have put around 100 miles on this ESC, done much experimentation and its still running strong. I am about to rebuild this whole board using a different gearing setup and larger wheels to see if I can break 30 mph, I feel confident.

That being said, I did have some issues. I initially tried to run the Dual FSESC on 12s power, that didn’t work. I experienced intermittent cutouts and reboots. Once I moved to 10s power and found the sweet spot mor motor amps (30a) I have had no more cutouts.

My recommendation for the FlipSky Dual FSESC4.20 100A is this…

Get one, build a board and see how well it performs…you will be a believer. As long as you stay within the config specs and aren’t building a racing board you will be glad you saved the money.




You can purchase them here…

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October 13, 2018