DJI Mini 4 Pro Drone - DIY Motor Repair

Learn the best way to eliminate slipping due to warn cogs on the motor shaft
using JB Weld epoxy! Let it cure for at least 6 hours!

[@user-tb7uq5lr1n]

WOW!!!

[@websitesthatneedanem]

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

[@sciencebygabrawy]

Yes. Gotta be careful

[@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!

[@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.

[@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

[@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!

[@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.

[@mustafacimen4136]

Yapıştırıcı tamir kitini nereden temin edebilirim 🇹🇷

[@sciencebygabrawy]

JB Weld'i Amazon'dan alabilirsiniz

[@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?

[@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

[@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.

[@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.