Inexpensive 14S ESC

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, and others.
Atomic Skull

Atomic Skull

Well-known member
Messages
783
Reaction score
748
Points
248
https://sequremall.com/products/sequre-14200-14200pro-brushless-esc-5-14s-200a

The difference between the standard and "Pro" is that the pro version has a 15A/35A peak BEC a larger heatsink and a fan. Basically the standard version is a big drone ESC and the Pro is more of a surface and heli/airplane ESC.

Some people on the Rotorflight forums have used their 120A ESC on helicopters and apparently they are actually good.

ESCape32 is the best firmware on these right now it's low RPM performance is better than AM32. (AM32 seems primarily targeted at multirotors)
 
Atomic Skull said:
https://sequremall.com/products/sequre-14200-14200pro-brushless-esc-5-14s-200a

The difference between the standard and "Pro" is that the pro version has a 15A/35A peak BEC a larger heatsink and a fan. Basically the standard version is a big drone ESC and the Pro is more of a surface and heli/airplane ESC.

Some people on the Rotorflight forums have used SQESC's 120A ESC on helicopters and apparently they are actually good.

ESCape32 is the best firmware on these right now it's low RPM performance is better than AM32. (AM32 seems primarily targeted at multirotors)
Click to expand...
 
Found this video of one being used on a 1/5 scale car


She's wrong about probbaly not needing the fan for 8S though. With 8S you are more likely to need the fan due to higher amps.
 
few remarks:
- 350A max means no big punch (HW does this up to 1400-1600A), I have this experience on this from Flier esc
- It likely lacks a brake function (perhaps it does do dragbrake like marine escs support) Adding car to application scenario does not mean it brakes. Also in the video above, there is no braking shown. The do mention the main gear breaking, perhaps due not braking but reversing while still running forward?
 
Atomic Skull said:
Found this video of one being used on a 1/5 scale car


She's wrong about probbaly not needing the fan for 8S though. With 8S you are more likely to need the fan due to higher amps.
Click to expand...
It all depends on what motor she's using. If say it's a 5000 watt motor and is used at 12s, 50v, - it draws from the battery at no more than 100A.

The same motor on 8s, 33v, would still demand it's 5000 watts, but with less voltage, would draw from the battery at no more than 151A.

Ultimately the deciding factor isn't whether she chooses 8S or 12S - but what the power output of the motor demands out of the ESC.

Regardless of how much current her rig draws, if she's ever in Wales, she should come rip with me down the showground. 😅 Gas V Brushless!
 
Last edited:
Or just add watercooling to the motor, thats what i did :)

1763667986365.webp


This is my WC testsetup, I will make a cleaner install. Got a different motor and WC-sleeve coming in. As i can't change the gearing easily i am replacing the current 1100kv (6-8S) motor for a 650kv (8-14S). I am considering to take my HW seaking 300A (up 14S) out of my boat and add it to the loop.
But like i commented on the 14S above, it does not support braking, only dragbraking.
 
Rotauq said:
few remarks:
- 350A max means no big punch (HW does this up to 1400-1600A), I have this experience on this from Flier esc
- It likely lacks a brake function (perhaps it does do dragbrake like marine escs support) Adding car to application scenario does not mean it brakes. Also in the video above, there is no braking shown. The do mention the main gear breaking, perhaps due not braking but reversing while still running forward?
Click to expand...

There is zero difference between surface ESCs and air ESCs except firmware, MOSFETs are MOSFETs and amp ratings are basically like C ratings, mostly made up marketing bullshite. The only thing that matters is MOSFET surface area and how the firmware controls the motor. Car ESCs don't have more MOSFETs than a similarly sized air ESC.

This ESC uses open source firmware either ESCape32 or AM32. EScape32 firmware has an option for forward and reverse with brake IIRC AM32 does not. AM32 is air-centric though while EScape32 is general purpose with a focus on surface vehicles and robotics. (EDIT:They also offer BLheli32 as a firmware option but that's drone-centric and also closed source)

Found this page with infor on setting ESCape32 up for use on surface vehicles: https://www.bigkidtinytruckrcs.com/...7BMX4QgstwaxzOvMTGgwPqOf7t39Pa13FzmptfJMC5DEj

The settings are a LOT more extensive than a typical closed source ESC so probably not a good option if you want somthing simple that "just works" If Hobbywing etc. are Windows then ESCape32 is Linux.
 
Last edited:
Horatio said:
It all depends on what motor she's using. If say it's a 5000 watt motor and is used at 12s, 50v, - it draws from the battery at no more than 100A.

The same motor on 8s, 33v, would still demand it's 5000 watts, but with less voltage, would draw from the battery at no more than 151A.

Ultimately the deciding factor isn't whether she chooses 8S or 12S - but what the power output of the motor demands out of the ESC.

Regardless of how much current her rig draws, if she's ever in Wales, she should come rip with me down the showground. 😅 Gas V Brushless!
Click to expand...
A 5000w motor on a 700 class helicopter can spike over 300A on 12S.
 
Atomic Skull said:
A 5000w motor on a 700 class helicopter can spike over 300A on 12S.
Click to expand...
Yes, but for the purposes of understanding the relationship between a given motor type and the comparative current draw it demands between 12S and 8S packs, it's the fully charged voltage and wattage we refer to calculate the typical maximum continuous current values.

I think the take home is that it's the motor that draws the current. It will draw what it requires and doesn't care:
  • whether your ESC is up to the task
  • at a sensible temperature
  • whether the user has chosen 8S or 12S
  • whether you use a fan
How hot things get isn't determined by 8S Vs 12S - but rather what load the user places upon the whole system. That's a lot of variables, including what you touched on in your last post - peak current, where accordingly there will be a corresponding voltage sag which can cause real issues.

Thankfully, ESC's will usually be set to detect such things and protect itself.

I think the failure to use a fan is a bad idea regardless of pack choice. 👍
 
Atomic Skull said:
There is zero difference between surface ESCs and air ESCs except firmware, MOSFETs are MOSFETs and amp ratings are basically like C ratings, mostly made up marketing bullshite. The only thing that matters is MOSFET surface area and how the firmware controls the motor. Car ESCs don't have more MOSFETs than a similarly sized air ESC.

This ESC uses open source firmware either ESCape32 or AM32. EScape32 firmware has an option for forward and reverse with brake IIRC AM32 does not. AM32 is air-centric though while EScape32 is general purpose with a focus on surface vehicles and robotics. (EDIT:They also offer BLheli32 as a firmware option but that's drone-centric and also closed source)

Found this page with infor on setting ESCape32 up for use on surface vehicles: https://www.bigkidtinytruckrcs.com/...7BMX4QgstwaxzOvMTGgwPqOf7t39Pa13FzmptfJMC5DEj

The settings are a LOT more extensive than a typical closed source ESC so probably not a good option if you want somthing simple that "just works" If Hobbywing etc. are Windows then ESCape32 is Linux.
Click to expand...
If you say so, I saw BLHeli_32 and figured it would all be air focus closed source firmware. I will however be looking into EScape32, interesting...

My big 400A flier esc certainly did not have the big punch of a Castle of Hobbywing esc. Never said it was a hardware thingy, i do agree its all about the firmware.
I've been playing around with fardriver esc's too and know what a difference some settings can make (or break). Come to think of it, never considered them on a RC, but for a 1/5 they might actually be a valid option to consider too. 72V-680A esc for 200-300$
 
i do understand the advantage of higher voltage, but what about the total weight ? what lipo do you use to get 14s ? what motor has a low KV to suit 14s ?
 
14s is 58.8v, so all of these below 800kv would work:

1763994313731.webp


I'm putting a 650KV in my Rofun

Weight is kinda relative. If your RC suspension/handling isnt ruined by it, it should be fine.
 
Back
Top