Tag Archives: hub motor - Page 4

Some noise from rim or hub

Q:After running for a couple of weeks.Sometime you can find there is some noise from bicycle rim while you are riding.

A:Now you should check spoke nipple.If can’t find 36 pcs nipple on spokes.There must be some nipples inside the rim,if not,maybe some aluminium impurity.

Solve:Disconnect your hub motor wheel from your e-bike,remove the tyre,you will find there is a red gasket round the rim,also take it off.Then make the valve hole down,shake rim,the impurity will be out of the rim.Re-install them.

Solve this noisy problem.

Advice: We suggest after running several days,had better to tight 36 pcs nipples.

Q:Can you help me?I am very disappointment.
I ordered a motor from the other supplier,the HBS36F — Front Motor.Sent several emails,haven’t gotten any reply in 2 weeks.

I have just tested it and it makes a noise once every turn and it gets stuck (or at least much more friction) at the same angle. It feels like it could be some magnetic effect but more likely it´s some mechanical contact that´s disturbing the rotation. Have you heard of this problem before or is the electric bike motor constructed to act like this? Could we do something to fix it, like open it up and remove whatever that´s making the noise?

A:The noise comes from some metal impurity on the magnet.

Solve: Disconnect hub and remove it

Instructions for 36V rear hub motor

Q:I am writing to see if you have any kind of instructions to install the hub motors and controllers I purchased from leafmotor.

I received two 36V hbl hub motors along with two lcc-001 controllers.
I did not receive any instructions as to how to install them.

The wires are labeled as follows:(heavy gauge wires)
Black has a dash – goes to the battery negative
Red is connected to a male connector with a smaller purple wire that says Power Switch and that goes to Battery positive.
The following I am not sure of:
Green says Mb
Blue says Mc
Yellow says Ma

The lighter gauge wires from the 12 pin connector are as follows:
Red goes to Power Switch terminal (mentioned above)
Black goes to the center of the 3 pin connector and to the 4 – 2 pin connectors
White goes the brake plug
Purple goes to the reverse plug
Green goes to the 3 pin connector
Brown goes to the horn plug
Smaller red goes to the 3 pin connector
Orange goes to the cruise connector

I do have a few questions about the power & horn switches and the speed controllers.

1. Can I use one switch for each of the functions below?
a) one switch to turn power on and off for both controllers?
can this be a simple on-off toggle type switch?
b) another switch to activate both horns?
can this one be a momentary push button switch?
c) and another switch to control the speed of both hub motor?
what type of switch is needed for this function?

2. How can we control wheel speed when turning as one wheel would need to spin slower than the other throughout the radius when making a left or right hand turn?

Note: I do not have handle bars on this vehicle. It is a four wheeler and it uses a rack and pinion steering system with a steering wheel. I would need to have switched that can be mounted on a flat surface instead of on handle bars.

some trouble with my electric bike

Q:I have some trouble with my electric bike again. This time the battery is okay, but hub motor is totally “dead”. The bike just stopped when I was driving. Do you have any suggestion about what to do? Is there any fuses or something else to check? All the wires are okay. Can you help me?
A:If you make sure the wires are okay. I think the problem possible comes from battery.
Case maybe when you measure the voltage of your battery,it is standard voltage,but when you need to run your wheel,the voltage will jump down less than the voltage which can drive the controller work.
You need to measure the voltage of your battery when your bike works. Not always need the motor works,just need to connect all wires and push your throttle.
See the voltage change from your battery.
Q:nothing is happening with the battery when I turn on the engine. The voltage is standing on 41 volt all the time, nothing is happening. I have opened the controller and checked the led lamps and the light is on on led 1 and in led 2 is the light blinking 6 times and then a short stop and then it´s blinking 6 times again.
So I wonder that the problem is, is it the wheel or the controller or the throttle, is there a way to test which part it is or do you have a clue? Is there any part that I need to replace with a new?
A:Could you tell me what kind of controller you use?
The problem may come from the controller.
1.Throttle
red wire and black wire: 5V
2.Hall sensor(five wires)
red wire and black wire:5V
Q:I have been doing these tests and the results is:
on number 1 (trottle)= 4.5V
and number 2 (hall sensor) = 1.2V
so it´s not the same as you have.. the battery is 41V
hoping that you can figure something out from this!
Measure the controller:
1.Disconnect five hall sensor wires from the motor
2.Measure the hall sensor(red and black) wires from controller
Hall sensor from controller(five wires)
red wire and black wire:5,13V When unplugged and 1,32V when inplugged

black wire and green wire: 5,13M Ohm
black wire and blue wire:5,12M Ohm
black wire and yellow wire:5,09M Ohm

So this means that hall sensors are broken?
What shall we do?
Is it possible to repair or change these sensors?

electric bike hub motor

Hub motor is an electric bike motor that is an important part for electric bike.A common bicycle with a motorized wheel(hub motor) is an electric bicycle.

1.According as your size of rim,it has 6″ 8″ 10″ 12″ 14″ 16″ 18″ casting hub motors and 20″ 24″ 26″ 700c and 28″ electric bike hub motors
From 6″ to 18″,the rims are much smaller,so always casting hub.And used for electric scooters,electric tricycles,sometimes also used for folding electric bicycles.
From 20″ to 28″,because of rims are much bigger,always use spokes to fit.And used for electric bicycles.

2.According as whether has “brush”,it has two type:brushless hub motor and brushed hub motor
Brushless hub motor is make up of aluminium hub,aluminium covers,axis,bearings,copper winding, rotor,hall sensor..
Brushed hub motor is make up of aluminium hub,aluminium covers,axis,bearings,gear box(several gears inside),printed copper slice,two pcs of brushes..

The brushless hub motor’s principle:electromagnetic fields are supplied to the stationary copper windings of the motor. The hub(outer part of the motor)follows, turning the attached wheel.

The brushed hub motor’s principle:energy is transferred by brushes contacting the rotating shaft of the motor that drive gears,then drive hub.

Compare them:
Noise Efficiency Torque Use-life
1.brushless hub motor: √ >78% √ >3-Year
2.brushed hub motor: a little noise <70% a little larger replace "brush" in 2 year With the advantage of brushless hub motor,it used for electric bike widely. According as use,it also called electric bike motor. According as current,it has ac and dc hub motor.But nearly all of hub motors are direct current(DC).

How to replace li battery cells?

Lead acid,LiFePo4,LiMn2O4,any kind of battery has use life.Generally 1 year warranty for battery.

Battery is a special good that is different from brushless controller,hub motor.Why?Controller and motor,if you don’t use for 1 year.Still no problem.But battery,you should charge it each two weeks,even if you don’t use.

For lithium battery,there are many cells make up of one battery.
Below we talk about LiMn2O4 battery first.
Now 4.2V 4Ah LiMn2O4 cell is familiar with us.
7 series for 24V,10 series for 36V,13 series for 48V
1.1 set of 24V 16Ah LiMn2O4 needs 28 pcs cells;
2.1 set of 36V 12Ah LiMn2O4 needs 30 pcs cells;
3.1 set of 36V 16Ah LiMn2O4 needs 40 pcs cells;
4.1 set of 48V 12Ah LiMn2O4 needs 39 pcs cells.

Too many cells for one battery,only one cell is sick.The whole of battery will be broken.
You will find that,full chargerd your battery,but it only drive your bicycle several meters,the motor will stop.
Because BMS found one sick cell,in order to protect other cells.BMS turns off power.

Now you need to replace sick cell,pls test as below,you will find it.
It’s a 36V li-ion battery.
Remove the battery end cover containing the charger socket. You will find a printed circuit board (PCB).
It is a battery management system (BMS) which equalizes the charge in each of the cells.
The wire B1 is the one attached to the battery anode. Connecting his professional quality voltmeter to the battery anode and to the other nine wires in succession.

There is one 10-Pin connector on this PCB. (B10 B9 B8 B7 B6 B5 B4 B3 B2 B1)

Measure the voltage between
the green wire and other nine wires as below:

B1 green wire to: Specification
B2 yellow wire(the second wire) 3.6V ~ 4.15V
B3 yellow wire(the third wire) 7.2V ~ 8.30V
B4 yellow wire(the fourth wire) 10.8V ~ 12.45V
B5 yellow wire(the fifth wire) 14.4V ~ 16.60V
B6 yellow wire(the sixth wire) 18.0V ~ 20.75V
B7 yellow wire(the seventh wire) 21.6V ~ 24.90V
B8 yellow wire(the eighth wire) 25.2V ~ 29.05V
B9 yellow wire(the ninth wire) 28.8V ~ 33.20V
B10 black wire (the tenth wire) 32.4V ~ 37.35V
If the voltages are normal,all cells are okay.

Incidentally, 32.4V~37.35V + 3.6V~4.15V = 36V~41.5V

Then, measure voltage of the battery
without BMS (B- and battery anode) 36V~41.5V
with BMS (D- and battery anode) 36V~41.5V
If these two voltages are the same, then the battery pack is okay.

Note:If the voltage of any cell is more than 4.2V.I think the cell is overcharge.It can stop BMS and battery work.So you should find out which cell is over charged.

Hub motor for electric bike

Hub motor is an electric motor that is an important part for electric bike.A common bicycle with a motorized wheel(hub motor) is an electric bicycle.

1.According as your size of rim,it has 6″ 8″ 10″ 12″ 14″ 16″ 18″ casting hub motors and 20″ 24″ 26″ 700c and 28″ electric bike hub motors
From 6″ to 18″,the rims are much smaller,so always casting hub.And used for electric scooters,electric tricycles,sometimes also used for folding electric bicycles.
From 20″ to 28″,because of rims are much bigger,always use spokes to fit.And used for electric bicycles.

2.According as whether has “brush”,it has two types:brushless hub motor and brushed hub motor
Brushless hub motor is make up of aluminium hub,aluminium covers,axis,bearings,copper winding, rotor,hall sensor..
Brushed hub motor is make up of aluminium hub,aluminium covers,axis,bearings,gear box(several gears inside),printed copper slice,two pcs of brushes..

The brushless hub motor’s principle:electromagnetic fields are supplied to the stationary copper windings of the motor. The hub(outer part of the motor)follows, turning the attached wheel.

The brushed hub motor’s principle:energy is transferred by brushes contacting the rotating shaft of the motor that drive gears,then drive hub.

With the advantage of brushless hub motor,it used for electric bike widely.

According as use,it also called electric bike hub motor.
According as current,it has ac and dc hub motor.But nearly all of hub motors are direct current(DC).

electric hub motor for e-motorcycle

Motorcycle is fast,exciting.

Traditional motorcycles use gasoline and newer versions like the run on electricity. When start,should swap shift from NO.1 to NO.5.It takes more than 10s to reach 80m/h and makes a lot of noise.
Use leafmotor’s blw-16b electric hub motor.Reach 80m/h,it just take 5s without any noise.

This hub motor is make up of aluminium hub,cover,magnet,rotor, winding,axis etc.The net weight is about 13.5kg,use 16×2.5″tyre,load approximate 500lb.Motor speed,we can customize according as your actually need.

Gasoline engine need to replace machine oil termly,but this electric hub motor doesn’t need to service.

Calculate cost as 30 miles per day
1.Replace machine oil each month,12 times per year.The price for each bottle of machine oil is $20USD. 30 miles per day use 0.5 gallon,it costs $2USD/day.Total price:$970USD/year,$1940USD/two years.
2.Use electric motorcycle,charge battery everyday cost $0.2USD/per day.Total price:$73USD/year,$146USD/two year.

Two years later,replace 1 pcs of new 48V or 72V lead-acid battery,it costs less than $500USD.
Choose electric hub motor for your motorcycle,it save $647USD/per year.

In order to have a good environment,please ride e-motorcycle.

14 inch electric hub motor for e-scooter

36V 750W / 48V 1000W 14 inch brushless gearless hub motor is make up of aluminium hub,aluminium cover,magnet,rotor,winding,axis etc.Mounted 14×2 1/4~2 1/2″tyre,load approximate 300lb. Hub Motor speed,we can customize according as your actually need.
It’s used for electric bike,electric scooter,tricycle.

More info about this hub motor
1.The drawings of HBL-14″ rear hub motor,it’s fit for standard 135mm rear fork.
Net weight:6.86kgs

2.The drawings of HBL-14″ front hub motor,it’s fit for standard 100mm front fork.
Net weight:6.58kgs

14″ e-bike stopped and waited for a moment

Q:Ride ebike on the flat road,no problem,but when I climb the hill,it will stop and wait for a moment,it still can re-start and have the same problem at once.

A:The temp inside the controller is too high and in order to protect this controller,should wait for a moment until the temp is lower than protective temp.

Solve:Use more MOS-FET brushless controller.

Now our 48V brushless motor controller has 15-MOSFET.More MOSFET afford temp and the temp rise very slow.It can solve this problem.

In market,always use 9-MOSFET to drive 48V 1000W hub motor.This kind of brushless controller is easy to be broken because of high temp will break MOSFET.

36V 750W / 48V 1000W 14″ brushless gearless hub motor is make up of aluminium hub,aluminium cover,magnet,rotor,winding,axis etc.Mounted 14×2 1/4~2 1/2″tyre,load approximate 300lb.Motor speed,we can customize according as your actually need.
It’s used for e-bike,e-scooter.

How to make hub motor reverse

Q:Received my DIY e-bike kit,18″ front wheel 48V 1000W hub motor with brushless motor controller,done installed on tricycle,test system,load 300pl on motor that still had enough power.
But one issue:I want to make tricycle reverse,help…

A:Please find a 2-pin connector(purple and black wires) from controller and jump these two wires,also can use a ON/OFF switch to control it.

BTW,connect wires according as below connecting.Make a sample:
1.Forward.
Motor ——– Controller
Thick yellow wire ——– Thick yellow wire
Thick green wire ——– Thick green wire
Thick blue wire ——– Thick blue wire

Motor hall ——– Controller hall
Thin yellow wire ——– Thin yellow wire
Thin green wire ——– Thin green wire
Thin blue wire ——– Thin blue wire
Thin red wire ——– Thin red wire
Thin black wire ——– Thin black wire

2.Reverse.
Exchange thick yellow and green wires and thin green and blue wires can make system backward.
Motor ——– Controller
Thick yellow wire ——- Thick green wire
Thick green wire ——- Thick yellow wire
Thick blue wire ——– Thick blue wire

Motor hall ——– Controller hall
Thin yellow wire ——– Thin yellow wire
Thin green wire ——– Thin blue wire
Thin blue wire ——– Thin green wire
Thin red wire ——– Thin red wire
Thin black wire ——– Thin black wire