ELECTRIC BIKE TIPS: E bike, Rear Hub Motor Disassembly
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- เผยแพร่เมื่อ 21 ก.ย. 2024
- ELECTRIC BIKE TIPS: E bike, Rear Hub Motor Disassembly
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Because of break through technology developments over the last several years, there is a wide range of options available in electric bike, motor, and battery technologies. These technologies have made E-Bikes faster, more powerful, safer while going much further than ever before.
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We’re Dave and Kirby, 2 guys based out of Visalia and Santa Cruz, CA. and we are Augustine E-Bikes. We’ve known each other for years. We are proud to offer a range of electric bike solutions designed to help you ride the way want. We ride these ebikes everyday and test them under every kind of condition. We really enjoy making these videos for you on youtube putting these bike through their paces. These are serious bikes for people who want to get the most out of the Ebike experience.
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I tell you a secret about how these bike motors are made.... to fail, on purpose ! What they are doing and lets take a 1000 watt as an example. What they are doing, in you know where, is making a motor coil system that is designed for 40 amps 48 v and putting it into a 20amp 48v motor using thinner gauge wire so that if to twist four 20 amp 48v batteries together, equaling 80 amps, the motor will pull 40 amps through the coil which is supposed to be a 20 amp coil but is wound for 40 amps using thinner wire and with the smaller wire unable to take take the larger amps, 40 amps, it buns up like a fuse so you cant put 4 batteries together to get more distance. If you do the math you can see that the winding is for 40 amps but the wire can only handle 20 amps. That's the scam on bike motor because if you want more distance they think that you will think that well "I must need a bigger motor" when they do the same thing to the 1500 all the way up to the 2000 watt, put four or six batteries together and fizzle because the wire is to small. Maytag does it to in their dryers and washing machines too so this is a known technique on how to sell motors. So remember they can do this with bike motors too and they are.
Very interesting 🤔
Thanks mate my wires snapped off and this helped me soldher on new ones
lid comes off at 6:00
Great info in the video. It helped me replace both bearings in a motor yesterday!
Every single step you did is completely different to what I do.
I probably done 10 different hub motors
I don't use any special tools.
No screwdrivers
No damage
Just bought one my self definitely will watch all your videos nice and helpful thanks
i was getting a error on my display it was Error 10 and this video will help me take it apart and have a look at the wires and see what wires are ok and what wires are lose or disconnected
thanks for the look inside.
How do i remove the axle as mine is bent
on these bafang rear wheel drive, is it possible to change out the crankset with something else? I presume there is a cadence sensor in the bottom bracket but it should accommodate most cranks right?
i can't put it back in, dont understand wyyy.. HELP plz i put the same way back in.
put stops untill the magnets not even in..
this is front hub motor right? i didnt see any sproket on it
Great Video !! got a question: tore up wires coming out of A Voilamart 1500Watt Rear Hub, what size wires will I need? like 16ga, 14ga., 12ga. for the heavy ones, and what ga. for the lighter wires??? I would like to know before I get it tore down, so I can just get it back together asap.... Thanks...
is the axle one piece with the stator? or can the axle be pushed thru?
If you have a sensorless controller (no need for hall sensors) you can take advantage of the extra space to add larger gauge phase wires👍 when u only need 3 wires instead of 8 it makes things easier
Ryan Kennedy.
Hi there I opened up my 2000watt motor and noticed no hall sensor boards. The inside looks like this video.
I opened coz I'm getting a error 007 on my sw900 display
...and larger wires means faster...I'm topping out over 40mph on my 1500w/52volter! 🏍️💨🤣
you need sensors to start the motor
We're getting 39 mph on a 350w 48v motor on a 52v system and it goes for miles, no heat it's weird actually 😅 Amazing ride its a decent setup Risun controller 36v/72v 1000w/2000w on a Lapierre X-Control.. 👌🏻
@@justworstevie473 not possible
Hello Is it possible to provide the coil winding diagram of the 48 volt 250 watt hub motor?
Do I need that puller thing? My motor is held together with screws that uses hex keys to open
so that looks like mine exactly- a Violamart 1500w?
I had to replace the thin gauge, strangely stiff stock wiring- I upgraded to a UPP 52v battery and burned up an XT connector even! Simply soldered runs of high temp silicone 12ga from the axle out to the controller. Did the trick- tops out at 40+ mph lol! Thanks for the look inside- I assume they're the same cartridge bearings on both sides?
I have the same set up, how do you get it to 40mph+?
You need a bearing puller. much easier, less hammering electrical - also fixes the issue if you have the wire coming out the end of the axle
right? I was wincing with each hit 😱😳😱😳🤣
on the other hand, with my luck a two armed puller would warp the cover...I think three armed would be best. Then if you want to overhaul the bearings, you'd probably have to pull them off the axle too right? Probably have to pull the freewheel too?
ugh I've been dreading this job- my DIY 1500w/52 volter tops out at 40+mph...and I've been riding it almost every day for two years now- my only transpo! 🏍️💨
Is ok to apply grease inside motor magnets ? because i 2
Why would you break this open like a brute once a year just to check that didn't break it opening it up??? seems a useless but risky maintenance to me...
right? *"If it ain't broke...don't fix it!?"* 🤔
A valid reason to crack open the motor would be a need/desire to repack/replace the bearings. Mine and others here have clickers. (mine's intermittent so I haven't bothered..yet) Seems like they used marginal quality bearings and/or grease, no surprise.
check the magnets. sometimes they come lose and need glued back down.
I have the same problem. Could i use 6 Inch gear puller ? for my HUB motor 36V 500W. thanks
Any of those wires a speed restricter?
Brother.. I am having a problem getting the plate back on... No matter how many times I hit it with a mallet, it still stays approx 2-3mm off from secure contact. Can you advise me here?
Hello, i have problem with error 70 for fifth day already , i have support only for first push and walk assistant. In third day i had support for 10km and after that was gone again.How to fix that? i have e-st500 rockrider.
Hi I’ve got a motor position sensor error on my ebike any advice
Do you know how to change axle and where can order parts thanks
My torque arms came loose while I went to throttle from a dead stop. I got luck with the wires etc. But the two motor hub bolts are misaligned now by a few degrees. Can I use two wrenches to align them back? Thanks
Did you get a fault come up on your screen saying something like motor alignment sensor fault
How would you remove and replace the bearings? I have some worn bearings on mine that's making this constant clicking.
You want to use a press to remove the old ones and install the new ones.
Not like that lol
Any luck fellas finding the solution I’m in his shoes now
does this motor work with a sine wave controller?
Hey great video I just wanted to know what size gear pulled do I need to do this my self thanks in advance?
You will find that your use of gears changes dramatically when riding ebikes, because of the assist you get from the motor. But, for your rear freewheel or cassette give yourself a wide range of gearing for hills and the same with your front chain ring. You will end up using less gears, but want to make sure you have a range for those times that you need them.
He used an 8inch puller
Great video.
Question. I have a cracked hub shell (20" 500w) but my motor works fine. I've looked online for the hub shell itself, but only see listed the full motor with hub shell.
Can hub shell be replaced alone? Do you have the name of some vendors? Can u steer me in the right direction? Hope u can help.
/bklyn 👑
2 part metal repair paste will repair a cracked case
Can u take off the wheel hub?
Is it possible to upgrade the motor on my ebike?
can you please tell me the code of that bearing which you uncovered there? or at least it's dimensions .. i probably have problem with that bearing, it creaks and it's new motor .. only 2 weeks of riding ... i tried to lube and tighten the spokes a little bit , because i thought that they could be it.. but no... it is probably factory defective bearing ... and i wanna try to change it
damn that's a bummer, looks exactly like my setup- which is a Violamart 1500w. It's a great motor with a 40mph top end, when paired with a 52v batt lol...my bike is basically a motorcycle in disguise. Haven't yet pulled mine and haven't found an exploded diagram anywhere so I don't have a code for you...and it seems Viola doesn't have a clue what they're selling! (I paid $150 for a 1000w motor, they sent me a 1500 instead- score lol!) Let me know if you find a bearing code anywhere, good info to know. You can probably improve yours by overhauling the bearings, repacking with lots of good quality grease. I've been mulling the job myself...
@@udsmall7306 hey man! haha what a good deal xD getting 1500w for a price of 1000w 😁 .. I solved the problem few days ago, I decided to disassemble it and repair myself . It was 6003 RS bearing with double sided plastic seal . I bought high quality ones, no problem since then :) I already did around 2000 kms on it since i have that motor. I also often use it as a motorbike😅 very helpful and enjoyable thing! i run it on 48V and top is 60-63km/h on flat. but I am thinking about 52V batt to give it some extra speed boost 😋. happy milwa and drive safe! cheers bro
@@EduardRitok sweet, thanks!That number is key... I'll probably go ceramic when I do mine. Definitely upgrade to 52v! I did with a UPP 20aH triangle batt and now can tow a 80lb. trailer full of groceries for 8 miles with 1,000 elevation gain at 38mph! And my top speed record is 45.6 mph (73.4 kph)! 😁🏍️💨
OH- also, replace the motor wires with high temp silicone ,14 gauge- I burned up an XT connector on the thin stock wires!
@@udsmall7306 that sounds great!😁 i wanna get some small tow car for my bike too. Backpack is ok, but it has limits.. also, high center of gravity because of a lot of weight on back is not convenient on bike. So , tow car will be such a help. I carry drinking water to my garden manually in jugs . ( i have garden 1 mile from home, through fields) ..so definitely, i can carry more water and also burning wood for a stove by towing :) .. thanks for reminding me hehe
@@EduardRitok yep I know all about cargo weight problems lol...here's my rig:
www.amazon.com/review/reviews-lightbox//ref=cm_cr_dp_mb_img?ie=UTF8&asin=B01N260A8D
I regularly fill it with groceries and haul it up to our place at speed. We live in a campground with bad water, so I also haul a 7 gallon Reliance container, 56 pounds. I had to do a little work on the axles, it was pigeon-toed! The hubs are junk, but it works. Wearing tires pretty quick coz of the loose hubs. Slime and tire liners in also. It actually tracks pretty good at speed lol
EDIT: ugh look for my reviews "Bud S." 🤔🤣🙄
Magnet holding it together 😂
When remove the bolt of the wire side ,just hit it with the other side the axle to the floor and all stator will pop off,,
Does anyone know the kV rating of the Motor? In case anyone is intrested: i count 46 magnets, so 23 poles pairs.
would that wheel work with the cassette side plate not fitted?
so like it is in the video, but the other side plate missing!>?
hmmm I'll say no- the cartridge bearing on the freewheel side needs to seat in the cover methinks...
plus you don't want water or debris in the works!
Can you grease it
That's a spacer for the brake disc, not gasket.
I have the same rear hub motor with tire which doesnt turn round. The body of the motor turns like an egg. Obviously the axis has a problem.
The motor kit was bought from com_buy_pleased on ebay. No help and no support from chineese com_buy_pleased As mechanical engineer I now have testet the axis which has a bump.
hi, did you fix?
Check out the releasable zip ties. You can use the same 100 times.
I got error 7 mean the motor have a problem .. what should I do ?
Me too. Did you fix?
I opened my 2000 watt motor hub. No hall sensor boards? The inside of my hub looks the same as this video.
Any advice from anyone please. I got error 007 on my sw900 display
Did you put it back?
Yes!
does it run? 🤔🤣💪
I've just noticed my rear (carbon) rim has cracks emanating from at least eight of the spoke nipples!
how to install converter72volts to12volts
I'm not even sure that is possible, but that is out of my level of expertise
Not Nuts,.. Cap screws.
yep...or 5x10(?)mm allen bolts would be correct terminology also...tpi and pitch well I forget 😁🤔
@@udsmall7306 images.app.goo.gl/UDj84EtTAspBzWe78
@@josese.bikeemporium8716 lol roight
why not make an easy puller that screws threaded rods into the 6 brake holes rear the centerholes in the plate for those and nuts and washers ontop, tighten nuts slowly in sequence and it'll pull off super easy in a fraction of the time and effort and without risking damage to the endshield of the motor.
Hey mate... I'm having a problem with a similar hub motor.
The wheel, even if it's off, won't be turning smoothly.
I've followed your instruction, and everything seems to be good.
But I think the problem is the friction between the motor box and the magnets.
here is an image to show you where, I think, is the problem. (In yellow)
imgur.com/a/v85KPvO
Any idea you can give me on how to fix it?
I think the problem is that you don't have the washers correctly placed. There is one washer that is a little smaller than the others that you place on the cassette allowing the wheel to move freely without rubbing up against the frame.
The washers are outside the motor right?
My problem lays inside on the motor, even with the wheel off the bike, I can still sense the problem.
@@ghazayel Did you manage to fix your problem? I have exactly the same thing with my motor.
@@Heons no, I gave up
main bearing?
No need for gear puller just hit the axle and the cover will be loose
Actually, that is not completely true.
Show me how..
the cover is pressed onto the bearing, so nope.
Why would you take something apart that's working. And not service it mmmm?
So. Is not necesary extractor! Brute Force . . :-)
Hammer and chisel merchant beat the shit out of it then use the puller lol how to funk you're motor he can nearly put it back together lol it will never run again
may as well use this too! 😱🤔🤣
Geeze... you're talking about removing a rear wheel but you're tightening the nuts. And you're using an adjustable wrench instead of a box wrench or socket? As soon as you called the drill a screwdriver I decided to stop watching.
Stay bro, use the comms as the tool, maybe some info and for sure some good laughs to be had in here
More at: facebook.com/ACWindings/photos/pcb.2846767555364425/2846767285364452/?type=3&theater
smh you are wrong way
....and the point to this video is...???
always have a gear puller handy...
🤣🤔
@@udsmall7306 I have a couple of gear pullers. Still don't understand the point of this video Big Bud.