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Ebike Geared Hub Motor Repair: Loud Motor & Loose Magnets (Wired Freedom/Cruiser)

Maximum Charge

80,565 views

This motor was loud below 15mph. This means the magnets inside were loose. Watch how to repair a powerful geared hub motor with loose magnets.

Shoutout to ‪@TheHowtoDad‬ for giving me the gear puller idea. Check out his channel.

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20 Comments

@maximumchargeEV Creator 1 year ago Pinned

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@MichaelMammon 3 years ago

1. The small rectangular part on a shaft is a keyway not a clip.
2. The pin in the middle of the circlip pliers is to change from spreading to compressing. (Read the directions)
3. The yellowish PCB substrate (fiberglass) insulation between the armature windings and the stacktooth is for electrical insulation between them. A little bit of chipping on the exposed corner is fine.
4. DON"T USE RED LOCTITE if you ever want to take the motor apart down the road. A torch or soaking in solvent is about the only way to break Red Loctite free.
5. The biggest limiting factor of how much current you can run through the motor is the windings. If you melt the coil wire insulation, or fry a coil wire it's over for the motor. Never run more current through a motor than it is rated to handle.

Glad you managed to get it going despite not doing much research into what you were doing.

@benargee 1 month ago

21:56 it's also perfectly safe to stack the magnets together if you have the right thickness of foam, wood, or other suitable non magnetic material to act as a spacer between them.

@brianvickers7740 2 months ago

Thanks for the video, all my magnets were loose and used epoxy to put them back in place. No more noise!

@davidlorin1379 2 years ago (edited)

Hey, I didn't know Jeff Goldbloom narrated E-bike geared hub motor repair videos. I hope you just went ahead and re-glued all of the magnets.

@JamesSmith-f7i 1 month ago

Thank you sir 4 the idea. I been trying to decide which birds i want to start raising. I was honestky leaning towards either pheasants or bob white quail. Now im thinking im about to start searching around to see what they run and how hard are they to ship

@tedg.312 2 years ago

If you have a shop vise the freewheel is very easy to remove. I secure the freewheel tool in the vise and drop the wheel on top. You simply turn the wheel counter clockwise like a big ol' bus steering wheel which gives you great leverage. Be sure to put some anti sieze or grease on the frewheel threads to make it easier to remove next time...

@michaeldubinski1375 2 years ago

Great Info as always digging deeper into fixing my motors! Cracked magnet; hall sensors; mixing motor cores in different casings...and more!

@deandoshen8429 1 year ago

MUCH RESPECT TO YOU AND YOUR SHOUT OUT TO THE HOW TO DAD, NOT A LOT OF PEOPLE ON HERE GIVE CREDIT 101% TO YOU AND YOUR VIDEO IS VERY INFORMITIVE TO KEEP IT UP.

@Actualfactual69 5 months ago (edited)

holy crap dude I used to have that blanket when I was a kid never thought I would see it again. I should buy it off ya 😂

@CONSCIOUS_TALK_ENT. 3 years ago

My wicked cruiser motor started making this noise last night and i feel scared to ride it so thanks for this video.

@leoszilard3998 3 years ago

Thank you for this video,The Company in Illinois referenced you when I asked if they have a video of the breakdown of the hub motor to add grease over time for preventive maintenance.I also fixed a PM motor like you did years ago with loose magnets and the only problem is that the glue can be sort of a spacer if there is too much glue behind them,So I used a starrett micrometer to measure the thickness of the magnets from the back of the disc where they are mounted to the face of the magnet and used as a reference the magnets that were not removed to see if the ones that you repaired are at the same position distance.How far the magnets seat in is critical in that the flux density lines can be a counter emf if one is further away from the outer ring they are mounted to.Since you are helping so many people with this video,I felt compelled to share some of my experiences.Good work,Someone upstairs is writing this all down.Cheers.Joe EE/P.E.

@Saddletramp1200 3 years ago

I have that same computer in my bike shop win 98 for DOS games. Wired Freedom is my next ebike. Don't be scared of that motor. Trust me, I'm a Mechanic :face-turquoise-drinking-coffee:🤣

@пригожин_ев 7 days ago

Ничего не понятно но очень интересно

@vanlifebiker 3 years ago

Thanks for documenting this.
😎👍

@chrissvideos8405 1 year ago

If you have a vice. Mount your free wheel tool in it. Put the wire through the hole and seat the tool. Grab the outer rim and turn the wheel to loosen. Super easy to remove a freewheel

@colinwhite144 2 years ago

That's a 750wat hub motor. You want to try doing that with a 2000wat hub motor the magnets would not crush your fingers it would cut them off. But there is a safe way to dreading the magnets uta a blue paper I forgot the name so when you get stater just slightly liftted you slide this paper in and you can remove by hand. I've done jobs on 2000wat 3000wat and never yes a puller just push down but not to use wheel as it will buckell. I've seen the Chinese do this in factorys and they make it look dead easy. It's conferdance if you don't have it it becomes really hard it's amazing when you no the trick it becomes easy but still watch your fingers. Even a 750wat not be taken lightly as the guy who made video. These videos are good for people who haven't tried jobs like this

@kurtismckemmie4850 2 years ago

Wow thank you so much for sharing this with us! I have a Ancheer step thru a couple days ago my hub motor started making a clicking sound when I activate the motor. The whole bike is starting to vibrate but not too rough. I will definitely try this next time it rains outside.

@orvillecooper8334 3 years ago

Well that is a very comprehensive video! Job well done sir!

@E-BikeInTheWoods 1 year ago

To be honest. I love how loud the wired bikes are. Let’s people know I mean business when blowing by them at 50. Just my personal opinion tho. Great video 🎉