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Nov 11, 2020, 02:21 AM
Just Plane Nutts
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My You-Tube channel

Here is a link to my "DOGGeslife" You-Tube channel where I post various videos I have created, including boating and flight vids and a large number of mod tutorials for micro RTF airplanes:
Latest blog entry: My You-Tube channel
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Mar 01, 2021, 10:00 PM

Eachine 400 brushless mod

You may like to consider buying WL Toys brushless planes like the XK A600 or the A430 as they will cost less than to buy n mod the Eachine 400 n come with better quality (hobby grade) parts.
These planes come with a better brick than the horizon ones , try to get the combo with the X6 as its a good transmitter that is pretty comparable to the dx 6 n have expo n other features, it also uses Futaba protocol which is more stable (no signal loss when flying in areas with lots of trees) than spectrum's .

Both the XK A600 n A430 comes with lots of spare parts, you can also buy their electric gear to mod the eachine , their parts come in stand-alone modules for the brick, servo n esc .
These are of better quality n allows for easy replacement of the faulty component rather than having to buy the entire unit as in the case of the AR 6410BL.
The XK A600 brick also comes with AS3X features, 3X mode only corrects for wind turbulence while 6X is for full stabilization

I find horizon umx bricks to be expensive n of poor quality .
Brushless umx planes fly too fast for my liking , they often have to be landed fast to prevent the prop from nosing down

I think the 1020 coreless motor is too fast for the Eachine 400 planes, it should be matched with the 8.5 mm motor that is used on the umx polecat.
In China, the 1020 coreless motor only sell for 1 usd while the XK A600 Beaver with X6 tx sells for 85 - 100 usd
May 01, 2021, 05:36 AM
Just Plane Nutts
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Thanks for the suggestions, but we walk in different worlds.

I found the 10mm brushed power in the 400 series and in the Volantex 500-series Cubs too under-powered for my liking, though great for new flyers to train with. I'm having MUCH more fun with more powerful brushless units. For instance, THIS is more fun to me and more up my alley, performance-wise:

UMX Polecat is fragile and light EPO foam and weighs 35g. Eachine Mini Mustang is heavier but more durable EPP foam and weighs 20+ grand more. A 400 series with an 8.5mm motor would be a dog. The smaller and lighter V761-1 Trainstar has the smaller 8520 brushed motor and is more suited to it (I put an 8mm brushless motor in mine).

I use E-flite bricks because I already have several Spektrum transmitters, and I get the bricks for $35-$40 and 2S bricks fro $30-$35 by searching around and being patient. Examples:



Aside from not working with my transmitters, the Xk bricks are not programmable. So they can only be mounted in one orientation, servos up or servos down. The bricks I use can be set to mount sideways, upside down or backwards to suit a variety of applications. AS3X can be tweaked for compensation direction and authority level.

And the DSMX bricks are more compact too. No way I could have hid a Xk brick fully within my MIG-29 or P-38 builds.

No quality qualms from me. The only one that ever failed on me received reverse voltage by accident when I soldered a battery connector on backwards.

TRUTH IS.....I am a maker at heart (a former tool & die designer and machinist). Check my YT channel and you will see far more building and modding videos than flying (or boating) ones. . Making new things or making things better is my love in life. Why should the factory workers have all the fun?

Again, appreciate the suggestions, but not for me.

Happy flying!
Last edited by AirDOGGe; May 01, 2021 at 05:45 AM.
Oct 18, 2021, 02:36 AM
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Ad I think you looked at this, but no way to add the brushless to the V series boards, there must be a signal somewhere feeding the brushed fets ?
Nov 20, 2021, 08:29 PM
Just Plane Nutts
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Sorry I didn't see this until now.

I found the feed and got a brushless ESC to work using the convertor from TheSTEVE, but it only runs for a second regardless of throttle position. That's both with and without a brushed motor attached as from the factory.

I taped off PWM0 in this diagram (purple line) that leads to the brushed motor FET:
Last edited by AirDOGGe; Yesterday at 03:40 PM.
Yesterday, 03:45 PM
Just Plane Nutts
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UPDATE: It works now thanks to the fitting of a 3k ohm resistor across the motor leads. Details here:

PWM - to - servo level signal convertors made by TheSTEVE are no longer available as far as I know of (please correct me if I am wrong) but a new one is being introduced by another member. I will be testing one soon and putting out a video of it.

Meanwhile, you can find it here if you wish to review one now:

Until then, happy flying!
Latest blog entry: My You-Tube channel

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