Tag Archives: hub motor - Page 8

20 inch 1000watt or 1500watt front electric hub motor kit

Posted by on December 31, 2021 Comments Off on 20 inch 1000watt or 1500watt front electric hub motor kit

Q: I want to purchase a 20 inch electric bike kit front wheel for my rickshaw, I only ride it with my twin boys they are 3 years old. I obviously don’t want anything with a great top speed I and simply looking for some assistance on hills.From your 1000 watt hub motor wheels listed, it looks like your older design model has a top speed of 30mph so I am thinking that probably has the best gearing not the newer version which show 45mph. The 1500 watt hub motor motor appeals but again same thing only shows with high top speed 45mph…Can you please suggest the best front wheel electric bike kit for me. It has to be 20″ and
has a standard 100mm wide fork.

A: Our new version hub motor also have low speed. Also 1500w motor has low speed.You just tell us what speed would you like, we can do it for you.Our 20 inch front hub motor is fit for 100mm wide fork. Also we have 1500w front.

Q: then I would prefer to order the 1500watt hub motor, do you offer that in the 20 inch with cast hub or only spokes as can’t see 1500watt with cast hub listed. I assume the cast hub would be stronger than the spoke version and therefore better for rickshaw.

A: We have 20 inch spokes 1000w & 1500w front hub motor.We have these motors in stock.But caste hub,only 1000w,don’t have 1500 casted hub.

Q: I am still keen to go with the 1500 hub motor but the spoke version is has quite a narrow rim.I don’t suppose you could fit it with a wider rim, so I can use a 2 1/4″ or 2 1/2″ tyre or bigger would be now problem if you have them.Your standard rim states 1.5 – 1.95″ tyre which is a little small I want use a moped tyre because of weight on rickshaw and they are mostly all bigger than your standard rim.

Technical problem with a 20 inch 48V 1000W bike kit – problem solved

Posted by on December 31, 2021 Comments Off on Technical problem with a 20 inch 48V 1000W bike kit – problem solved

Today I hit in a technical problem with the 20inch 48V 1000W bike conversion kit (Item ID:#LBCK20481000FN). I was riding for a shorter distance steep uphill in level 5 and suddenly the bike motor was making an obscure humming sound and was vibrating very strong. So I stopped immediately and shut down the system. I checked the hub motor and the cable for overheating but they where just with normal temperature. After a while, I already turned to go back downhill, I started the system again but the problem still exists. It seems that it is maybe a problem with the controller because now there is no reaction in changing the power level (1-5) or turning the throttle on. The hub motor gets only around 10 Amps with a max. of 590W (measured with a installed Amp/Volt meter in between). When starting pedaling or with the throttle with low speed the vibrations are immense but when I gain more speed the vibrations are reducing to a lower level but they are still there. When staying still and pull the throttle full, so the tire normally can spin free, only the vibrations and a loud humming sound exists. I know I do not have any warranty more leftover on this system but maybe you have an idea how I can repair this for a budget price.

I already solved the bike conversion kit system problem.
Funny what unexpected small things could cause some different technical reactions. The problem of the bike conversion kit problem above was, that one of the 3 phase cables to the motor was broken. By the effect of the depicted problems above I really thought that something in the controller was burnt-out but happily I could find the broken cable very soon so now everything
works fine again.

Buy an electric hub motor kit

Posted by on December 31, 2021 Comments Off on Buy an electric hub motor kit

I’m very interested in buying an electric bike kit as soon as possible for my bicycle (26 inch rim )and I found your page but I would like to know about all the models you’ve got from the smallest to the biggest and strongest ;and THE PRICES of these and all the specifications:
speed (km/h)
torque
durability
distance of charge
weight (of the electric bike kit)
weight (it can carry)
does it come with battery what type of battery (lithium ,lead)
voltage
amperage
watts
rims what type of rim

I’m not really interested in the rim (inch)but some info would be good ,I want to find out about these brushless hub motor

I need something that lasts 70 km and runs at 60 km/h on a flat surface with lots of power like to move 150-180kg of weight (bicycle me, hub motor, and a little extra weight)

what does the electric bike kit include?:hub motor battery controller throttle, brake lever, pedal sensor BATTERY MEASURE etc.

and what combinations can the electric bike kit fit 36v – 48v – 24v -6,7,8,9,10 amps if possible

the same for the rear motor and for the front hub motor

(front rear) sizes, types ,performances PRICES and everything they can do the thing is that I live in wide mountains so I need something strong but lasting for I live far away of the city.

27.5 inch 48V / 52V 1000W rear electric hub motor – 650B bike conversion kit

Posted by on December 31, 2021 Comments Off on 27.5 inch 48V / 52V 1000W rear electric hub motor – 650B bike conversion kit

* The conversion 27.5 inch bike motor kit combines the full E-bike technology: direct drive Brushless Gearless high torque hub Motor to change almost every bicycle into a personal electric bike. Save energy, protect environment and save money with a lot of fun.
* Saving 10% of electricity, Improve the efficiency of 8% With The Newest Materials Steel Rotor.

Main Features:
>. Rim: 27.5 inch / 650B double wall Alloy
>. Spoke: 12 gauge / 164mm Length × 36 pcs

>. Engine: Bldc hub motor
>>. Voltage: 48V
>>. Power: 1000W
>>. Efficiency: 90.5%
>>. Max speed: 71 kmh — 45mph
>>. Mechanical brake: Disk or V
>>. Freewheel / Cassette: space for 6 or 7 gears
Default: install screw thread Sprocket (If install Cassette Sprocket,please leave message)
>>. Cable location: shaft end , LEFT
>>. Cable length:100cm / 40″
>>. Install: spacing of 135mm fork
>>. Noise: < 60 db >>. Surface: Black painted

>. Driver: brushless controller
>>. MOSFET: 12 PCS
>>. With LCD: YES
>>. Rated Voltage: DC 48 Volts
>>. Min. Voltage: DC 40 ± 0.5 V
>>. Rated power: 1000 Watts
>>. Casing material: aluminium
>>. Maximum Current: 26 A ± 1 Amps
>>. Thermal: aluminum shell and the substrate
>>. 3 phase 120° brushless motor
>>. Operating Conditions: -20~45 °C
>>. Waterproof design
>>. Size: 171 mm L × 82 mm W × 42 mm H

Updated LCD , More Function:
* Cruise
* Forward & Rackward (Optional)
* Regen brake
* Kmh & mph (Optional)
* Set Max speed ( 0 ~ 72 kmh / 45 mph )
* Pedal assist ( 1 – 5 )
* Temperature
* Motor power
* Timer
* Battery gauge
* …

Package Content:
1 x 27.5 inch / 650B 48V 1000W rear hub motor wheel
1 x 48V 1000W 12-MOSFET motor controller
1 x LCD ( display speed, mileage, battery gauge.. )
1 x Twist throttle — Cable length: 1500mm
1 x Brake levers — Cable length: 1500mm
1 x Three button switches ( control cruise, regen brake, reverse .. ) — Cable length: 1500mm
1 x Pedal assist — Cable length: 1500mm

Net Weight: 24.5 lbs
Package Size: 58cm L × 23cm W × 58cm H / 22.8″ L x 9.0″ W x 22.8″ H
Package Type: Cardboard Box

26 inch electric hub motor kit for the dropout 160mm fork

Posted by on December 30, 2021 Comments Off on 26 inch electric hub motor kit for the dropout 160mm fork

Q: Are you able to supply a rear hub motor kit wheel (36v @ 500W – 750w) for a rear dropout of 160mm?
I have an existing e-bike that uses a 250w geared rear hub drive on a 26 x 1.95 wheel.
It has a 7 speed gear, standard 160mm disk brake and a bike mount (frame) width of 160mm.
I would be happy to go from a geared (small hub) to the larger electric bike motor kit type.
The existing bike frame is steel (not carbon or an alloy) so I may be able to ‘bend’ the rear forks… (fit).
I have included a PDF diagram (attached) to show the existing rear hub motor fitting size.

A: Yes, we have dropout of 160mm 36V 750W electric bike motor.

Q: With the new Leaf controller and LCD, I know I can limit the maximum output speed of the 750w Direct Drive hub motor to a set (safe) maximum speed for each PAS mode 1 – 5.
With our Australian laws, I want to honor speed and safety – yet have a safe speed and torque (reserved) for hills.
I respect that you have kindly supplied my order with a 320RPM hub motor ( a good choice).
My question is: “Does the max speed by set by LCD / Controller economically limit the maximum current sent to the hub motor”?
I am talking here about battery life with a low speed LCD / Controller setting ‘modulating’ the full power sent to the hub motor.
So if I program the setting to say 25Km/h, then is the torque output effected at speeds less than the given 25Km/h?

A: Yes, if you set max 25kmh by LCD, motor will work less than 25kmh.(You can set max 10kmh,11kmh,12kmh….48kmh,49kmh,50kmh)

1.Press “SW” from LCD. Turn on LCD
2.Press “up” &”down” together for more than 2 seconds in 3 seconds after LCD display – Then “72” will flash.
3.Press “down” or “up” to set any max speed. Press “SW” one time to save. Then “26” will flash. It’s tire size. Don’t set. Still press “SW” one time to save. Then “kmh / mph” will flash. Don’t set. Press “SW” one time to save.
4.At last, press “SW” more than 2 seconds, then will be back.

There is a Three button switch inside parcel.

** Black switch (be Left side / Middle – motor works forward. Be right side, motor works backward/reverse)
** Red switch (Be left side / regen off. Be right side / regen on)
** Green switch ( When motor is working, press this green switch one time. LCD is display C, motor will work as the same speed) – Re-press this green switch one time, or press brake lever, turn throttle to max, motor will stop.

measure electric bike hub motor hall sensors

Posted by on December 30, 2021 Comments Off on measure electric bike hub motor hall sensors

Bike motor controller is fine, they all got 4.9~5.0 from meter reading. We will open and check the hub motor after work. We are more worried about if the electric bike motor itself is damaged.

Could you get the below data:
1. Remove this white biggest plug, power on and measure volt of white biggest from brushless motor controller.
Red, Black, blue, green and yellow
1.Red and black is about 4.9V
2.Blue and black is about 4.9V
3.Green and black is about 4.9V
4.Yellow and black is about 4.9V

If you can get the data, the bldc motor controller is okay.

LCD always display “05 flashing”.
The issue comes from electric bike motor hall.(five wire: red, black, green, blue and yellow)
Could you check this five wires whether through?

This is a instruction about how to disconnect this hub motor.
It takes about 10 minutes to disconnect.

You will find a PCB around the rotor-winding. There are five wires (red, black, green, blue and yellow) are on this PCB.

I removed both panel on hub motor and did a quick test. All the thin wire looks fine. They can go through from both side. But the thick wire connect to enameled wire that I can’t test since they been wrapped up.

If Not flashing. Then it will work.
Could you get below data from electric bike motor hall sensor?

Three are three hall sensors around rotor winding.
For example:
hall 1 Green (pin 1.1 pin 1.2 pin 1.3)
hall 2 Yellow (pin 2.1 pin 2.2 pin 2.3)
hall 3 Blue (pin 3.1 pin 3.2 pin 3.3)

Pin 1.1 ,pin 2.1 and pin 3.1 are connected to the red wire together.
Pin 2.1 ,pin 2.2 and pin 2.3 are connected to the black wire together.
Pin 1.3 is green,pin 2.3 is yellow,pin 3.3 is blue.

Volt meter Red Pin to Pin x.1 black Pin to x.2 (x=1,2,3)You will get below data:
Pin 1.1 and pin 1.2 is about 1.185 (see picture 5)
Pin 2.1 and pin 2.2 is about 1.185
Pin 3.1 and pin 3.2 is about 1.185

Volt meter Red Pin to Pin x.1 black Pin to x.3 (x=1,2,3)You will get below data:
Pin 1.1 and pin 1.3 is about 1.498 (see picture 4)
Pin 2.1 and pin 2.3 is about 1.498
Pin 3.1 and pin 3.3 is about 1.498

Volt meter Red Pin to Pin x.2 black Pin to x.3 (x=1,2,3)You will get below data:
Pin 1.2 and pin 1.3 is about .633 (see picture 6)
Pin 2.2 and pin 2.3 is about .633
Pin 3.2 and pin 3.3 is about .633

Another way to test hall sensor:
Connect all wires, power on.

Measure red, black, green, blue and yellow BLDC motor hall wires
1.Red and black is about 4.9V
2.Black and yellow is about 4.9 or 0V (Please use your hand to turn hub motor, the data will change from 4.9-0V)
3.Black and blue is about 4.9 or 0V (Please use your hand to turn hub motor, the data will change from 4.9-0V)
4.Black and green is about 0V or 4.9V (Please use your hand to turn hub motor, the data will change from 0V-4.9V)

If nothing is changed, this hall was broken.
How about the other black and red wire?
Only black or red wire can’t touch well or not go through, 05 will be always flashing.

26 inch 48V 1500W bike conversion kit info request

Posted by on December 30, 2021 Comments Off on 26 inch 48V 1500W bike conversion kit info request

Q: I was contacting you in hopes of getting some more information about a conversion 26 inch kit that you offer on your leaf bike website. I’m interested in the Item:LBCK26481500FN and Item:LBCK26481500RN, my question is do you offer the 26 inch 48v 1500w bike conversion kit with both the front and rear 26 inch hub with rims instead of having to purchase both kits, basically a one sole complete kit. I was hoping that 48V 20Ah lithium battery would be compatible with the kit as well. Please contact me when available. Thank you for your time and assistance.

A: Yes,can use LBCK26481500FN and LBCK26481500RN on one bike.
Need below parts:
* 1 set of throttle — use to drive two controllers
* 1 set of brake lever — use to drive two controllers
* 1 set of switch — use to control cruise
* 1 set of LCD — — use to drive two controllers
* 2 sets of 48V 1500W brushless controller
* 1 pcs of front 48V 1500W 26 inch hub motor
* 1 pcs of rear 48V 1500W 26 inch hub motor
* 1 set of lithium battery — — use to drive two controllers

Install 48V 1500W rear 26 inch bike motor on rear fork and 26 inch front hub motor wheel on your front fork.Fix controller,install throttle,brake lever,switch,LCD,also these parts all have two plugs for both controllers.Then connect rear 26 inch hub motor wheel to one controller.The other front 26 inch hub motor wheel to the other motor controller.Use 48V 20ah lithium battery to drive these two controllers. Power on and Press “sw” from LCD more than 2 seconds,then LCD will display. Turn throttle,electric bike works.

leaf 20 inch 48V 1500W rear hub motor – bike conversion kit

Posted by on December 30, 2021 Comments Off on leaf 20 inch 48V 1500W rear hub motor – bike conversion kit

Q: Regarding: Newest 20 inch 48V 1500W rear hub motor – bike conversion kit works on any bike.

What is the max current of the hub motor controller at 48V?
Is the controller programmable to other max current settings?
Does the LCD display show power either in watts, or volts and amps?

A: It’s max 40A
This bike motor controller can set other max speed.
Yes,LCD display power

Q: If I order just the hub motor, can the 1500W rear hub motor have a 10K NTC thermistor installed in it?

A: This 1500w hub motor with 10k themistor (It’s default)

Q: I have a 135mm fork. Can the Shimano Freewheel, 7 Speed, 14-28T be installed on the hub motor and still fit within 135mm?

A: Shimano 7 speed screw-on sporket can be install this hub motor.(TZ-21) – It’s default. Also,fit for 135mm fork.
If other shimano 7 speed cassette sprocket,need to modify hub motor.(We still can make.)

Q: Thanks. Do you sell a Shimano sprocket with an 11 Tooth (11T) that would fit the 1500W rear hub motor?
Q: Can you list the description of each wire in the hall/temperature connector pictured below?
red – ?
black – ?
yellow – ?
white – ?
green – ?
blue – ?

A: Red +
Black –
Yellow – W
White – Temp
Green – V
Blue — U

Q: What parts is includes on this 20 inch 48V 1500W rear bike motor kit?

Package Content:
1 x 20 inch Newest 48V 1500W rear hub motor wheel
1 x 48V 1500W 12-MOSFET motor controller
1 x LCD ( display speed, mileage, battery gauge.. )
1 x Twist throttle — Cable length: 1500mm
1 x Brake levers — Cable length: 1500mm
1 x Three button switches ( control cruise, regen brake, reverse .. ) — Cable length: 1500mm
1 x Pedal assist — Cable length: 1500mm

Net Weight: 11.0 kg / 24.2 lbs
Package Size: 50cm L x 23cm W x

50cm H / 19.7″ L x 8.7″ W x 19.7″ H
Package Type: Cardboard Box

1500w hub motor rpm

Posted by on December 30, 2021 Comments Off on 1500w hub motor rpm

I have done a little more testing with the 1500w hub motor. I think that I am
happy with the current winding. I am giving the motor 65A battery, 180
amps phase.. and it is like a rocket now.
The efficiency is very good.. the most efficient hub motor I have
tested.. good work!

But I want to be sure about the winding for my post about your 48V 1500W bike motor,
because your webpage shows lots of different RPM for the same motor (
this is confusing )..

If someone orders the hub motor from your website.. they will receive a 16*4
turn motor, which is 650rpm @ 49v = 13.26 kV
And the 13*5 turn motor would do 550rpm @ 49v = 11.2 kV
Is this correct…?

P.S. If you are interested in having a hub motor re-seller.. I told someone
in the USA about your hub motors and told him about my tests.

I got the hub motor and have tested it. It’s a great hub motor, but the winding is too fast for a 26 inch,650B,700C,28 inch,29 inch hub motor wheel.It’s better for 14 inch,16 inch,18 inch,20 inch,24 inch bike motor wheel.

The no load speed on the hub motor I received = 640rpm on 49v.

I notice on your web page that you sell stator windings.. I was wondering
how many turns this hub motor has.

Is it possible that you could sell me a stator winding with one more turn that could do 500-550rpm on 49v?

16 * 4T 650RPM
13 * 5T 550RPM
11 * 6T 450RPM
9 * 7T 350RPM
8 * 8T 250RPM
7 * 9T 150RPM
…………

How to choose a hub motor kit for your bike?

Posted by on December 30, 2021 Comments Off on How to choose a hub motor kit for your bike?

Hope to convert bike to e-bike. Often don’t know how to choose a hub motor kit ?

Just do it as below,very easy.
1.wheel size, 2.wheel width 3.Motor power 4.front or rear

1. Please check your bike tire size first.There is some words on your tire.
* If 26 * 2.5″ — Should choose 26 inch hub motor kit (2.5 is tire width)
* If 24 * 1.95″ — Should choose 24 inch hub motor kit (1.95 is tire width)
* If 20 * 1.75″ — Should chosse 20 inch hub motor kit (1.75 is tire width)

2. About tire width & rim with.
* The width of rim is 25mm — It’s fit for 1.5″, 1.75″, 1.95″ bike tire
* The width of rim is 32mm — It’s fit for 1.75″, 1.95″, 2.1″, 2.2″, 2.5″ bike tire
* The width of rim is 80mm — It’s fit for 4″ fat snow tire

3. About motor power. Please choose a legal motor for your bike.
* 250w bike motor, speed less than 25kmh that is fit for UK,Germany,France..other European Countries.
* 36V 750W hub motor, speed is less than 20mph that is fit for US

4.Covert front or rear wheel?
* All of our standard front hub motor kits are fit for 100mm dropout.
* All of our standard rear hub motor kits are fit for 135mm dropout.

If possible,please measure your fork first.

Convert front wheel is very easy.
Convert rear wheel is also easy,should install sprocket on rear bike motor. — What kinds of sprocket would you bike use,cassette case sprocket or screw on sprocket? Our rear hub motor Default fit for screw on sprocket. If yours is cassette case sprocket,we also can make this rear hub motor so that fit for cassette case sprocket.

https://www.leafbike.com
This is our new site.There is more product info.