DJI Mini 4 Pro Drone - DIY Motor Repair

[@roberto49ism]

BIG NO NO...DON'T APPLY TO THE SHAFT!!! If you are going to use an adhesive, apply it to the bore in the motor bell. That way, any excess is forced up and out where it can be wiped off and NOT down into the motor.

[@milan9791]

On amazon we can buy new motor for arm, can you make a video on how to disassemble front arm and replace motor?

[@aeiou9755]

is solid there is nothing wobbling - but after the last crash the motor bell seems to be grazing somewhere inside - but i can't get it off. don't want to change the engine either i don't want to solder it XD and send it in and wait forever or maybe get one with 120 high limit it's a 2023 model without the stupid c1 certificate !

[@SanatSawant10]

Hey while changing my propellers my screw broke and is now stuck. What do I do?

[@Dieguitobeat]

pudiste solucionarlo, que paso?

[@sciencebygabrawy]

I’ll tell you but please use ultimate caution and precision. Use the smallest finest punch and punch a dent in the center. Drill with the absolute skinniest drill bit you can find down as far as the screw goes. Drop a drop off lithium grease to loosen. Put the punch back in and gently wiggle it out. Good luck.

[@davidnelson3757]

@@sciencebygabrawy I have broken a screw it it just simpler to replace the bell housing ? I thank you for your video as I thought I would have to dismantle this (back up drone , the insurance ran out , and its only just been recovered from crashing in a tree , about three months ago , it works fine until I replaced a few scuffed blades , you have saved me £ hundreds

[@DM-uk3dp]

You can get a new bell for 14 bucks.

[@sciencebygabrawy]

Oh wow I didn’t even think of that!

[@andban92]

Where can i get them? Can you please link it to me?

[@sciencebygabrawy]

This is what I found on Amazon a.co/d/ik0keCY

[@JVtv23]

Thanks for sharing sir, watching from Iligan City

[@QCGUY]

Arm assemblies aren’t $100 or even close but if you can’t solder glueing and things like this seem to be the go to. I personally wouldn’t risk it for the drone and others safety…

[@colekinneman]

No clue how you took that metal part out that holds the blades. Literally wont come off even when prying it

[@KongoDelivery]

Did you find a solution to take it off?

[@TomSimpo]

@@KongoDelivery I need to take it off too!

[@ghettocowboy993]

Agreed ... its not happening .. I need a mini barring puller

[@InanMusharut]

How to take it off?

[@milan9791]

Any tool to take off motor bell? Will small Bearing puller work?

[@dmctec5943]

Thxs. Ready for sale 👍

[@CtrlAltElite123]

What keeps the bell attached? Would friction on the permanent magnets not prevent the bell from spinning? Or is it friction between the shaft and the bell??

[@sciencebygabrawy]

It’s the friction between the shaft and the bell that keeps the bell on. It’s really, really tight. The permanent magnets never touch the magnets on the bell but I suppose the magnetic attraction does help keep the bell in place a bit as well.

[@charleszoellner3334]

Good Job my friend , Biglike from Charles Zoellner Channel 😃👍👍

[@sciencebygabrawy]

Thank you sir!

[@user-tb7uq5lr1n]

WOW!!!

[@a.hakimi]

Hello I tried to disassemble the propeller but it wore out and now when I turn it with the screwdriver it spins in a vacuum How can I do it, can you help me?

[@REINER-ud2zw]

Hi... Why is the engine so worn out? What happened? Did you have an accident? Or is this normal wear and tear?

[@sciencebygabrawy]

Well, it wasn’t really the motor that went bad. It was the motor bell that wore out, only because it’s made out of soft aluminum. I think what happens is when the blades are stopped abruptly the shaft wants to keep going, because it is still being driven by the motor and so that shaft, which is made out of a really strong alloy, wears out the soft aluminum on the motor bell little by little with each crash.

[@idontcare7961]

The bell is the one that actually turns the freefloating shaft. Shaft of the motor is only to keep the bell centered and carry the weight of the drone. The motor itself can not possibly even spin itself off the shaft as its free to turn as the bell is spun by the stator with permanent magnets on the rotor (bell) So the cause of loose bell is most probably just crash that bent the bell and made it wiggle.

[@juliomarchi9273]

Very good! 🤓

[@SmileSpills]

hello. my dji min i 4 pro got crashed and drone is not connecting to the remote. can u please help me with this?? what maybe the issue?

[@fernandez3063]

i changed my prop and a piece of debris was inside the motor, i managed to take it off but after that i got a ESC error and power system hardware error

[@sciencebygabrawy]

Wow! Errors do occur from time to time but not from a simple prop change. I’m certain DJI would help right away trouble shooting.

[@craigjones9367]

Does this come off the same as a mini 3 pro? I’ve damaged the screw shaft trying to remove a rounded screw. I’m hoping I can just replace the motor housing by taking it off like in this video

[@sciencebygabrawy]

Yes! It comes off the exact same way and the parts are readily available! Good luck!

[@davidnelson3757]

I feel your pain , but this video has saved me £200 I had better send the soldering iron back

[@paimun67]

Hello, I had an accident with my M4P and this part that you are putting back in its place I need to take it out to correct it. It turns out that due to the impact this blade support is slightly deformed and does not rotate freely. Do you know how I can disassemble it? Thank you very much and greetings in advance.

[@sciencebygabrawy]

I’m not exactly sure where you’re working but if I’m hearing you correctly, and the blades aren’t rotating freely, if the rod that holds the blades in place is somehow deformed, buying a new motor bell assembly may be the only thing you can do. That may not be much help but that’s what it sounds like without seeing it. The motor bell is very very snug on the motor gear. It must be carefully wiggled up to get it off if it’s not already loose from being damaged

[@ДаниилБирюков-й7п]

Is it possible to take off motor on the dj mini 2? Tried , very hard

[@sciencebygabrawy]

They are designed to be very tight and almost impossible to take off. This is intentional. If the motor bell comes loose and falls off during flight. It’s over. The reason why mine was so easy is because it was broken.

[@akathenerdtechgeek5172]

Dose any one know how to know DJI drones motors specifications

[@henriquedesouzamartins1807]

Is it possible to do the same on Mini 3? I tried to take off it, but didn't succeeded...

[@sciencebygabrawy]

It’s done the same way. Normally the mirror bell should be very snug in place by cogs that fit tightly with the shaft. If you are having trouble getting it off, I wonder if that’s even the problem?!?

[@RashardAlomari]

@@sciencebygabrawy I hit the roof the today and there's debris in the motors. For the life of me I cant get the bell (assuming this is the part where the propellers connect) and I just cant get it off.

[@ghettocowboy993]

If I use any More strength popping that bell off it will shatter

[@sciencebygabrawy]

Yes. Mine was quite loose because the aluminum bell had worn out so much. But yes, it really is a tight fit.

[@darrienpenco9143]

A bird attacked my drone it fell and the motor is not rotating what should I do

[@sciencebygabrawy]

Maybe try to blow compressed air if you think dirt or sand got in the motor. Is there power going to it at all? Do you feel it moving a little or no motion at all?

[@mustafacimen4136]

Yapıştırıcı tamir kitini nereden temin edebilirim 🇹🇷

[@sciencebygabrawy]

JB Weld'i Amazon'dan alabilirsiniz

[@jensghm_]

You think it's possible to remove the bell from an good drone? (I have some metal paricles on the magnets)

[@sciencebygabrawy]

Yes, you can and that might be the only way to remove the metal bits. Now, that bell is really tight on there and it’s supposed to be because it’s held in place by friction. Pull straight up. Don’t wiggle back and forth. Just one straight motion. Then use tweezers or even putty to remove the particles. There’s a small chance that compressed air could knock of the metal bits without taking anything apart. Let us know what you end up doing! Good luck!

[@RashardAlomari]

@@sciencebygabrawy ive pulled straight up, and every other direction....this thing won't move a hair. Can I pry it open with a screwdriver or any other ideas?

[@adrianp5667]

thx

[@websitesthatneedanem]

ON the HUB ONLY !!! ON the HUB!!! ON the HUB!!! ON the HUB!!! ON the HUB!!!

[@sciencebygabrawy]

Yes. Gotta be careful

[@thessiofreitas8500]

Amigo tô com drone motor travo tem como mim chama no zap

[@sciencebygabrawy]

Meu amigo, sinto muito, mas não falo português. Caiu na areia? Ar comprimido funciona para isso

[@michalralu]

Why is there so much slack? has the thread worn out?

[@sciencebygabrawy]

Yep, gotta be from too many collisions. The motor bell cogs are just soft aluminum.

[@jimsmith2782]

I don't know how you did that because it's impossible to get those screws loose

[@sciencebygabrawy]

If you’re using the correct size Phillips screwdriver, and the head isn’t stripped, then maybe they just overtightened the screws in which case maybe just drop a drop of lithium grease or WD-40 and see between the threads. That’s just very strange to me but I can’t think of any other reason that the screws won’t come out.