I’m replacing emmo monster front axle bearings

[Shawnio]

Hello, I have an emmo monster and after 6,500 kilometres my front wheel bearing gave out. The axle is 270mm and 10mm diameter.

My problem is some of the assembly kind of got chewed up and spit out, one of the parts inside the hub got sheared and I can’t find the name of the part.




Only one sides bearings gave up but Im going to replace them both, is there a good video you can direct me too, I’ve been looking for a bit now, it’s the spacer inside the hub, what’s the name of it I think the top of it is sheared off, if you can help or replaced this before it would help, thanks

 

[glennb]

Axle sleeve? But why is it in two pieces, that combined are insufficient to span the distance between the bearings? Is there a missing section of tube that sits inbetween the sleeves to fill the void? They’d need that, if their purpose is to brace the besrings’ inner races so that torquing up the axle doesn’t crush the bearings.

 

[Shawnio]

Thank you, I think it’s a special axle sleeve with a flanged end, these Chinese e-bikes are supposed to be interchangeable but these customized parts drive me nuts trying to find them online, hoping someone has changed an emmo monster tire before and came across this, I think it got loose and I rode it too long before discovering it

 

[Shawnio]

I can see where it was rubbing the other spacer as well. Can’t find specifications on the part

 

[99t4]

OP, can we move this thread to the EScooters/EMotorcycles subforum? Emmo Monster is not an ebike and you may receive better help there.

https://cdn.shopify.com/s/files/1/0287/4484/3343/files/2222_7abcae96-83d4-418a-8cb8-e7ab8945ff88.jpg

 

[Shawnio]

OP, can we move this thread to the EScooters/EMotorcycles subforum? Emmo Monster is not an ebike and you may receive better help there.

https://cdn.shopify.com/s/files/1/0287/4484/3343/files/2222_7abcae96-83d4-418a-8cb8-e7ab8945ff88.jpg

What? It’s an e-bike, it’s one of the first generations of e-bikes? It’s a mechanical question in the mechanical section of electric bicycles. I don’t understand

 

[Chalo]

What? It’s an e-bike, it’s one of the first generations of e-bikes?

100% not a bike. It's a scooter, even if some dingdong put pedals on it for deceptive reasons.

Even Emmo uses the terms "electric moped" and "rugged scooter".

 

[Shawnio]

Guys I have posted in this same forum a few times and never once has the members confronted me and tried to criticize me over placement of a thread. Where is the nice people?

 

[Shawnio]

100% not a bike. It's a scooter, even if some dingdong put pedals on it for deceptive reasons.

Even Emmo uses the terms "electric moped" and "rugged scooter".

View attachment 360926

I am a little curious though, are you implying this forum is only for bicycles with spokes on them that is driven by a brushless motor……honestly

 

[Chalo]

I am a little curious though, are you implying this forum is only for bicycles with spokes on them that is driven by a brushless motor……honestly

No, there's a sub-forum for motos, and another for stand-up scooters.

 

[Shawnio]

No, there's a sub-forum for motos, and another for stand-up scooters.

Anyways thanks for hijackin my thread, I’ll think about my aggregious mistake as I’m walking to work tomorrow because I couldn’t find an option to fix it.

 

[Chalo]

Anyways thanks for hijackin my thread, I’ll think about my aggregious mistake as I’m walking to work tomorrow because I couldn’t find an option to fix it.

It's relevant because your repair isn't a bicycle repair, and you'll get better help by showing it to folks who are more familiar with fixing motorcycles.

 

[Shawnio]

It's relevant because your repair isn't a bicycle repair, and you'll get better help by showing it to folks who are more familiar with fixing motorcycles.

Ok then, I can agree with that I guess

 

[glennb]

I couldn’t find a good image of the wheel in question, but it’s not what I imagined.

I was imagining a wide hub with bearings further outboard. Are the sleeves arranged in your photo along the axle as they should be? I’m guessing not, and it should be: stepped sleeve —> bearing —> straight sleeve —> bearing —> stepped sleeve. Where the steps face outward and tuck inside the fork.

If so, you could acquire some pipe, cut to length, and machine the step into them.

 

[Shawnio]

I couldn’t find a good image of the wheel in question, but it’s not what I imagined.

I was imagining a wide hub with bearings further outboard. Are the sleeves arranged in your photo along the axle as they should be? I’m guessing not, and it should be: stepped sleeve —> bearing —> straight sleeve —> bearing —> stepped sleeve. Where the steps face outward and tuck inside the fork.

If so, you could acquire some pipe, cut to length, and machine the step into them.

I am going to have to try that, I found some 10mm diameter stock and I am going to cut it to length, your steps make sense because there is a washer on the stepped sleeve but it was sheared off on both sides, luckily I was able to locate the bearings, what was throwing me off was that lip inside the hub, it was the “skeleton” of the bearing, I had to smash that out, then I could see it was a smooth bore with a lil lip where it seated, I managed to seat the bearings but I was worried about the oroentation of the spacers, your post put it all together for me and I got it on there. I’m not even gonna bother with the brake right now. Thank you very much

 

[Shawnio]

I ended up pounding on the axle with a sledgehammer I was so desperate and mushroomed it so this is going to get me to work tomorrow

 

[glennb]

Not clear what’s going on there. Are you using plastic tubes full of bearings in place of the outer sleeves? And using the vice clamp to secure the axle nut because you can’t torque up the nut without crushing the bearings?

 

[Shawnio]

Not clear what’s going on there. Are you using plastic tubes full of bearings in place of the outer sleeves? And using the vice clamp to secure the axle nut because you can’t torque up the nut without crushing the bearings?

That’s how new bearings come. What happened was I was driving like a dummy and compressed one side of a bearing and it got shredded, I was confused because the shell of the bearing was making it look like there was a recessed lip in the hub I had to overcome to get the bearing on, after getting new bearings I had another problem where the spacers made no sense, I did lose a flange to hold the dust covers but that’s another day, the post helped, it can be locked if they like, thank you

 

[glennb]

I see, the bearing came apart and its outer race remained in the hub. No worries.

The sleeves serve two purposes. First, to centre the wheel in the fork, by preventing the bearings sliding along the axle. Second, to prevent bearing damage, by ensuring the compression force from tightening the axle nut only occurs on the bearings’ inner shell/race.

The outer sleeve lengths aren’t as critical, because the fork can flex to accommodate, but the inner sleeve length needs to be precise. A fraction long is acceptable, but they’re often too short, resulting in crushed bearings. You’ll notice it by spinning the wheel by hand as you’re progressively tightening the nut - any increase in spinning resistance is a result of the bearings being crushed.

 

[Shawnio]

I see, the bearing came apart and its outer race remained in the hub. No worries.

The sleeves serve two purposes. First, to centre the wheel in the fork, by preventing the bearings sliding along the axle. Second, to prevent bearing damage, by ensuring the compression force from tightening the axle nut only occurs on the bearings’ inner shell/race.

The outer sleeve lengths aren’t as critical, because the fork can flex to accommodate, but the inner sleeve length needs to be precise. A fraction long is acceptable, but they’re often too short, resulting in crushed bearings. You’ll notice it by spinning the wheel by hand as you’re progressively tightening the nut - any increase in spinning resistance is a result of the bearings being crushed.

You are correct. In this model there is kind of a smooth bore and then a lip which prevents then bearing from advancing any further, on the other side again smooth bore but it was seated nicely when I discovered it so I was so confused, the person who said motorcycle subforum would be better was right because they would of just said smash out that ring stuck in there, my roommates b old farmer and he goes you forgot the ring and when I got it out everything made alot more sense thank you for your time

 

[glennb]

All good … except for the cable-tied vice clamp, that’s concerning.

 

[Shawnio]

All good … except for the cable-tied vice clamp, that’s concerning.

Tomorrow I rethread the axle at work, it doesn’t want to move but it could lol just gotta get to work tomorrow then I have 5 hours with my real tools, Ty

 

[99t4]

Ok then, I can agree with that I guess

Thanks, I'll move the thread now to EScooters/EMotorcycles

 

[Shawnio]

Thanks, I'll move the thread now to EScooters/EMotorcycles

It will help others, thank you for waiting for me