HIMIWAY EBIKE LOOSE MAGNETS (Weird grinding noise)

Рет қаралды 15,075

Ebike Repairs

Күн бұрын

Пікірлер: 39

@toneault7499 10 ай бұрын

hi. use a deep socket or tube to seat the key.. on axel. never hit the clutch. as you showed.. ok ??

@EbikeRepairs 10 ай бұрын

Agreed. A teeny little tippy tap with a hammer 🔨 is needed with a socket still, but distributed evenly.

@foreverhungry84 10 ай бұрын

best thing i have found for gluing magnets back in is jb weld epoxy. also that grease was mingin, first thing i do on my own motors is to clean off factory grease and apply tungsten grease. it's super high heat resistance and provides low friction due to the tungsten particles.

@EbikeRepairs 10 ай бұрын

I did just that with JB weld on this motor in the end, thanks!

@faYte0607 Ай бұрын

@@EbikeRepairs Do every magnet need to have the same side-to-side spacing or can I eye ball it? My worry is whether very uneven spacing would impact power and speed.

@EbikeRepairs Ай бұрын

@@faYte0607 the same is ideal, at 250w it really shouldn't make much difference for a DIY repair - if you have a very important or high power motor I feel it's worth taking it to a motor rebuild shop so they can get it perfect.

@faYte0607 Ай бұрын

@@EbikeRepairs do you have suggestions on removing magnets that were previously glued on if I want to apply epoxy adhesive to all magnets? I've heard that a heat gun is not a good idea. By brute force is probably not a good idea either if they're on there very strong.

@MiniLuv-1984 10 ай бұрын

That was interesting. Thanks Darsh. I'm surprised they don't manufacture these motors with a mechanical means of holding the magnets against the pull of the coils. As good as they are all chemical bonding will fail with heat and vibration.

@EbikeRepairs 10 ай бұрын

I can't see what they would hold it in with unless it was plastic or something not ferrous, but I guess I'm not a design engineer so it's not my job! BAFANG seems to have got it down, never seen one with loose magnets even 15 odd year old motors. However some of the newer 'off brand' ones have failed within a year.

@MiniLuv-1984 10 ай бұрын

@@EbikeRepairs I was thinking aluminium ring top and bottom.

@EbikeRepairs 10 ай бұрын

Or just recessed into the housing?

@MiniLuv-1984 10 ай бұрын

@@EbikeRepairs I imagine the movement that has to be controlled is the in-out movement of the magnets as the coils get energised directly over the magnets and that force will get worse if controller timing is out. Not sure how recessing the magnets into the housing would help if above is the source of the loosening of the magnets? As you point out, not possible for us to solve - we don't make the motors :)

@EbikeRepairs 10 ай бұрын

Too true... One day a community designed motor/ open source hub will enter the market, I'm sure.

@bestbiker7323 10 ай бұрын

Right on! Love your videos!

@EbikeRepairs 10 ай бұрын

Glad you like them!

@timothyjackson3874 10 ай бұрын

Thanks for all the info in your vids. I increased the speed on my ebike to 28mph it worked one time and after that now it only does about 23 on a flat surface without peddle assist what could be the problem it has two 30amp new fuses

@EbikeRepairs 10 ай бұрын

It's possible that you made the motor a little crispy inside, and now it heat soaks? Is it warm to the touch after 15 mins riding?

@timothyjackson3874 10 ай бұрын

I dont know i will have to check thanks@@EbikeRepairs

@dav1dbone 2 ай бұрын

@@timothyjackson3874 It's possible it overheated and caused your magnets to lose some of their strength

@katethompson5258 10 ай бұрын

Well done for cleaning your lens 😉 great video 😊🎉

@EbikeRepairs 10 ай бұрын

Thank you! 😀

@rotary980 5 күн бұрын

What was the gear size ?

@joehozzy2616 7 ай бұрын

Just put some superglue around the magnets without removing them. It will drip down and hold them in fine. Done this repair on a couple of motors. Just dont get glue between stator and magnets.

@EbikeRepairs 7 ай бұрын

I haven't tried that, ended up job welding them all one by one, what a job!

@marcelosousa2560 5 ай бұрын

Hello... Super glue holds? The motor hub heats up, will it be able to handle it?

@joehozzy2616 5 ай бұрын

It will hod fine.@marcelosousa2560

10 ай бұрын

Cyc mid drive motors tend to have the same problem.

@EbikeRepairs 10 ай бұрын

Interesting 🤔 I actually ended up jb welding these magnets back in, but didn't post it because it looked like a dogs dinner and the internet would have eaten me alive 😂 6 months ago - ish. Still going strong.

@Neilukuk 7 ай бұрын

@@EbikeRepairs Did you remove outside casing with pulley or did you just push the jb weld down sides without taking casing off?

@GroovyVideo2 10 ай бұрын

dont take apart any further -- super glue magnets in place - could work ?

@EbikeRepairs 10 ай бұрын

I did end up jb welding them in place! I didn't post it because it looked messy and the comments would have been brutal 😂 working fine 6 months later though.