I love your bare cable joints so close to each other ....

you have unbalance rim you need to re allign or do truing

it's the wobbler in the wheel that makes that noise because the wheel is not true. i had it on mine also

If your motor can endure that, mine should last forever😊

Have you checked bearings if you have a dodgy one it can make that noise. I've got same motor 750wat but not that make I think it's a cheap one came with fat tyre bike can I ask you how many magnets has this motor got. Mine is new it for setting in display thanks

Im sure you figured out the problem but im sure the bearings in the gears were damaged! And that piece goes in the little key hole ring where the gears are.

That bit of metal is to locate the gears that's what's causing clunk the pin looks worn. If you took them gears of the first time you shoud gave seen that pin if you put the gears back with pin I different place that's your problem. If the pin is knackered you can buy one make one with a nail and file it down. It works a treat. Are you sure that 750wat hub mot does 40mph that's load underload that means that motor does 54moh no way then is your weight on bike. I've got 2000wat 45amp cinntoller 52v 20amp battery and I just get 40mph but I can do 30mph in four seconds no way 750wat dis 40mph when your on the bike unless your 2stone

2:03 that thing is the key for the clutch , is what they call it i think. You want to keep that Lol

If i have a regular hub motor without gears on my scooter and it make those noises, what could it be?! As i got the scooter (2nd hand, 3 years old) it was fine. Now it make strange sounds as well i lost about 3-4 km/h topspeed (from max. 40-43km/h down to maximum 40 at best) I hit some nasty potholes with this rear motor while removing some load from the front (which is prone to completely hit the stopper in the suspension) I tuned the suspension a bit with harder springs to drive as "meant to be" with load on front/rear about 50/50, but i guess the damage is done now? It really doesnt matter much, this scooter costed me like 200$ just to get into e-scooter driving before i buy a 60 km/h + model, but its still annoying since this scooter might be a nice spare/2nd scooter for other purposes if its reasonable undamaged to drive.

These are the gears my friend

High it's out of balance the motor. Normaly in motor you will see deep scribe marks that's done at factory to balance motor up to. When they check some are OK others have slight like when you use a chisel on wood and put a grove in. Yes how many magnets does this motor have. I'm used to 2000wat and 3000wat motors

wow big wobble in that wheel, or did you not tighten the spokes yet ?

Sometimes the magents come lose…. Check if their stuck on properly…. Better off with a sur Ron really…. That’s more off road

the wheel is way out of true you probably need to re lace the wheel and re true it.

maby oiling will get the nois awai and cleaning the little slided pieces corrosian hit it

I have heard people say that hub motors overheat a lot and the hall sensors fail ( johhny nerd out channel says that ), but I didn't have that problem yet. Cable did get a bit eaten into one one of them, not all have the protective metal spring sheath. Would have thought your spokes or wheel would break before anything in the motor would bend, but with a fat tyre bike the axle is wider ? did it cause a pinch flat ? on my new one I have a problem where the speed and power reads 0, thats on the sabvaton controller, maybe a problem with the communication between display and main circuitboard ? hall sensors must be fine if it passed the hall test and works normally ?

Sounds a bearing issue?

I hope you don't mind that's not 4mph yes that pin goes in slot when installing motor. If you ever take magnet of keep them at the same poles north and south. If you gave loose magnets best to take all them off the clean motor inside and back of magnets. Dont use proper adhesive use liquid nails is great and heat proof but smear a very thin layer on motor and magnet leave for 24 hours. Buy writes if motor is old your serpose to paint magnets with blush varnish leave till hard then brake a hacksaw blade and sharping till blade cut your finger buy a slight push just kidding then scrap varnish of by doing that it cleans the grove lines in magnet and make motor strong torge new bearing and clutch and you have a brand new motor don't forget the pin for motor. I'm a electric engineer I'm 75yrs old and i love ebikes bugger the speed law I've been out on my 2000wat next to police car done nothing. It the pit bikes that get there atension the bomber bike I've had them all and sold them you shoud try 8000wat 72v 79mph person but 2000wat ebike is the best the way I've done mine people say its a beast good luck with your 750wat like them inserts for puncher I've bought 750wat Fat Tyre bike amazon ice upgraded the seat so I can oed the dam thing I get 45mph on the stand 34 to 36mph not 40mph

the magnets are loose, glue them

That wheel it's a terrible shape. Sounds like a magnet or to has come adrift. Need lined up and glued.

Well out of line

For US $30. you can buy METAL replacement gears there are much more reliable.

Get a better brand motor 🙃