I’m interested in your 18 inch hub motor electric bike conversion kit I was curious is this a right hand drive or left hand drive ? Does this come with a sprocket, and if so how
Many teeth does it have ? Is this strictly pedal assist or will the motor engage while pedals are at a stand still?
Do you have a 1000watt hub motor for the drum brake wheel?
Do you make 16inch electric front wheels for surrey bikes ? The axles seems slightly different then your standard bicycle front wheel
Do you have a diagram as to how the drum brake connects to the wheel ?
I see that’s a separate drum break to purchase. How does the 1000watt wheel attach the drum break? Is there a mounting system on the wheel ?
The actual drum break 1000watt wheel comes with everything needed correct ?
I would rather purchase from you if possible since our communication has been the best. Can you work with me on the price of the wheel ?
Are the drum break to the wheel universal? May I ask why the drum brake isn’t included with the wheel?
What is the return policy in case I have issues with it fitting my bike or performing ?
I am now in the process of ordering the electric wheel kit for our surrey bike. Before ordering I was curious do you have the updated lcd screen for this model ?
It would be the same wheel, the rear 18inch wheel conversion with drum break.
Is there any documents showing the way the lcd screens look? Is one better then the other ?
I can choose a colored lcd screen for the controller as well correct?
Before I make a purchase I was going to ask do you offer a thumb driven accelerator switch instead of the throttle handle like a dirt bike.
Can you send me a picture of what it looks like please.
I was asking if I could see a picture of the thumb throttle as well
One more question about your thumb throttle. Do you have a thumb throttle that does not have the handle attached ? I’m trying to secure the thumb throttle to a sealed bar so I need it to open and latch over the bar to secure it instead of slipping over the end of a bar like a bike handle grip. If this makes sense?
Sounds good. If I were to want this one how would I express in my order I would
Prefer this thumb throttle ?
Category Archives: brushless motor
18 inch 48V 52V 1000W rear hub motor – electric bike kit
1500W Leaf Motor with 20″ x 4″ wide “Fat Bike” wheel
Q:Do you sale 1500w or higher hub motor laced into wheel that is 20” diameter by 4” wide for fat tire bike? If so, what are the dropout width options for axle? Can axle dropout width be 150mm wide or even wider? I have a bike frame with 170mm dropout width. I can use torque arms and spacers to fill some of this space, but not too much.
If available please quote price for:
~1500w newest model hub motor with 20” diameter x 4” width wheel (pre-laced service)
~Need motor/wheel laced with 1 cross pattern. Radial lacing is acceptable but not preferred. Black spokes preferred.
~Need 150mm or wider axle dropout width.
~Need turn count which contains HIGHEST AMOUNT COOPER FILL
~Need temp sensor pre-installed in bike motor
~Need single speed freewheel (11 or 12 tooth preferred) pre-installed
~Need SHIPPING to U.S
Also, can you sale with 750W sticker or engrave on bike motor?
A: We can make this 20 * 4 wide Fat Bike wheel.
Please click below site. This is our 20 inch 48V 1000w Fat bike wheel – It’s 20 inch bike conversion kit for fat snow bike.
We also can make 1500w bike motor.
* 1500w with 20 * 4 — Okay. (If your tire is 20 * 4 “, 20 * 3” rim is much better fit for 20 *4” tire. Also,we have 20 *4” rim)
* Please click above site. Wheel looks the same this one.
* At least the dropout 170mm or more
* With temp
* Can use single speed.But min 16 tooth can be installed on this motor. (Can’t use 11 or 12 tooth,only no motor hub use this 11,12)
* Ship to USA is okay.
Q: The tire is “Stingray tire” type. 20″ * 4 1/4″. If you think 3″ wide wheel will fit better ok. 16t freewheel is ok. Rather 1500w if motor will handle more power. Which turn count do you recommend for speed 35mph?
A: We recommend leaf 13 * 5T winding rotor.
1500w rear hub motor with bike rim
Q: I’m looking for a powerful direct drive rear hub motor for a 26″ MTB.
I’ve been looking at this motor:
1.Is this the best 26″ rear hub motor you have or do you recommend any other bike motor?
2.Can this hub motor be delivered with a temp sensor installed?
3.What type of gear cassette will it be able to fit with a 135mm dropout? (How many gears)
4.Can this bike motor run higher than 48 Volts? 52 Volt maybe? Or 72 Volt?
A: 1. We have 26 inch 48V 1500W rear hub motor. We recommend this one
2. With temp
3. Max 7 speed and fit for 135mm dropout. Default for screw on sprocket.(If you need to install cassette sprocket, should leave message when you order.
4. We recommend work at 48V battery.(Max 60V)
Q:Can this same rear hub motor also be delivered with a 27.5″ x 50mm tubeless rim?
I will install a 7-speed cassette sprocket, so very good that it supports this.
A: 27.5” and 26 inch are different rim.
If 27.5” rim is smaller than 700c and larger than 26 inch rim?
* If you need to install your 7-speed cassette sprocket. Please Note when you order.
Q: I want to use the newest 1500w hub motor in this bike:
If you press the green + (View all components) on the page you can see that it has 27.5 INCH x 50mm, tubeless ready rims and 142x12mm (Ai offset lacing) rear drop out.
So I’m wondering if you can deliver the hub motor with a rim that’s the same dimensions as the original rim?
A: We have some sample of 27.5 inch rim in stock. Looks the same to the one on your site.
We only ship two 27.5 inch hub motor kits to USA one time two month ago.(ONLY one customer need this 27.5 inch by now)
This 27.5 rim is smaller than 700c and larger than 26 inch.
Q: This sounds good. Thank you for even taking pictures.
How wide is the 27.5″ rim you have? (How many millimeters)
characteristics of three-phase brushless motor
As a matter of fact, it is rather difficult for people to analyze the operation characteristics of three-phase brushless motor accurately. Motor air gap flux density distribution along with the air gap by sinusoidal. When the winding is energized, magnetic flux generated by the current impact of the air gap is negligible. In the condition of the switch operation, the power transistor is constant pressure drop. Each winding is symmetry and the corresponding circuit is completely consistent. The relevant electric time constant can be neglected. The power of sensored brushless motor and others that control circuit are also negligible. Three-phase brushless DC motors are also synchronous motors. It is very important to protect the three-phase brushless dc motor drivers. Power transistor would be burnt down when it is overload or use improperly, because it may cause high current.
How to build brushless motor controller
How to build a pretty basic dual brushless motor controller? I’m going to focus on the power section in this post, and as soon as I have time I’ll discuss the code/FroBoard side of things in another post. I got started on the power section last night after a copious amount of coffee, and wrapped it up this morning- it’s a pretty simple build if you’re used to building stuff on perf board. I firmly believe that the best way to learn how something works is to build it yourself- that’s how I learned about electric cars, and brushless motor control is no exception. So if you want to learn how brushless motor controllers work, build one! A controller this size is a great place to start if you’re just getting involved in brushless motor control- I would definitely recommend starting out with something like this if you plan on building a car-sized controller. In fact, my first brushless controller was essentially half of this controller. It’s good up to around 24 volts and 1 or 2 amps per motor, but with proper heatsinking it could probably take a bit more current.
This post is written with the electronics hobbyist/motor enthusiast in mind. It’s also turned out to be a bit longer than expected; ah well. I’ll try harder next time! Most of this won’t make any sense if you don’t have a rough understanding of what brushless motors are and how they work- if you’re in that group, no worries. There are lots of great sites out there explaining those details; unfortunately, I don’t have the space to go through it here. I’m really just hoping to take a little bit of the mystery out of brushless motor control and show that it isn’t all the black magic it can seem like- hopefully it helps a few hobbyists out there get a little further.
This controller is currently driven by two FroBoards, which is definitely more processing power than is really needed- it’s cool because it leaves room to read encoders, do serial stuff, and anything else you want to do in addition to running the motors. I’m running a whole robot off of these two FroBoards- usually, the motor controller is a separate unit, and another processor is used to handle the higher level decisions. Right now, for instance, I have a serial routine set up that lets me use a terminal emulator (MacWise in my case) to drive the robot around using the number pad on my keyboard, and there is still tons of room for add-ons. With a storebought setup, this would probably take two separate motor controllers and a processor to control them. So anyway, that’s pretty cool. That said, this power section could just as easily be driven off of a different processor or board; it isn’t specific to the FroBoard.
Likewise, it would be really easy to build a single motor controller for use with one processor or FroBoard in this style. It would just be a matter of getting rid of three of the half bridges. Anyway, without much ado, here’s a schematic for you all!
Leafmotor announced launch of brushless motor evaluation kit
Leafmotor announced the launch of a new generation for the brushless motor series evaluation kit (DRV8412-C2-KIT). The kit contains two brushless dc motor which can be started directly or single department all the necessary hardware software of stepper motor.
Out of the box with the brushless motor controller and driver solution containing DRV8412 motor drives, real-time control C2000 ™ Piccolo ™ microcontroller (MCU), controlCARD module, Quick Start GUI, comprehensive development of the source code, Code Composer Studio ™ (CCStudio) integrated development environment (IDE) and a variety of motors;
Modular control architecture for the application select the appropriate level of processing performance to provide a high degree of flexibility. In addition to C2000 controlCARD module outside, TI will provide more in 2011, the MCU options;
With integrated MOSFET’s DRV8412 motor drive compared with competing solutions can be Rdson sharp drop 3 times, up to 97% efficiency, and provide voltage in 50 V 6 A (continuous value) / 12 A (peak ) current without expensive heat sink.Besides, DRV8412 motor driver chip also includes advanced protection features, such as periodic over-current, over temperature and under voltage protection, can significantly reduce design complexity, board space, and ensuring higher system reliability;
C2000 Piccolo MCU support control, communications, and debugging. Industry-leading 32-bit embedded MCU in the C2000 MCU device family integrates the most advanced control peripherals and CPU functions. Free controlSUITE ™ software can get the most comprehensive combination of software modules brushless motor controller, real-time debugging and debugging open reference design;
C source code and use-based GUI can demonstrate one or two brushless dc motor voltage and current control and a stepper motor speed and index (with up to 128 micro-steps).
High Quality Brushless Hub Motor Free of Maintenance
Motor control from the simplest and off, starting, stopping, to clamp phase, transformer, inverter, vector, torque control, motor repair tool detail is nothing more than to make the brushless hub motor more accurate positioning, more stable speed and torque changes in more detail.
Maintenance of common motor control AC induction motors method has the following two kinds:
a. a test voltage control method: change the stator coil voltage, you can change the speed. For example, household fans, the use of switch to change the fan speed. Servo motor
b. Frequency control method: the mains frequency is 60Hz, if you use a micro controller or digital signal processor, operating rectifier component, the power switch into a different frequency, which can change the AC motor speed.
Stepper motor AC induction motor inverter, transformer control, the advantage is small, lightweight, low price, But the problem is the low efficiency of energy conversion easy to heat, electromagnetic interference noise is easy to produce strong, high noise and vibration.
To solve the above problems, academia and industry are actively involved in the DC motor, brushless DC motor to overcome. DC motor has good stability, speed should be, its input and output is almost linear between the characteristics, so that it can have a good control performance, it is widely used in high-precision control applications. However, because the brush and commutator DC motor is a mechanical friction contact with, easy to wear, sparks and electrical noise, resulting in lower reliability. Brushless motor is the DC brush electronic circuit in lieu of, and retains the advantages of DC motor, quick starts and stops; speed proportional to the voltage; turn moment proportional to the current advantages for high-accuracy, high stability and high speed applications. The disadvantage is limited by a permanent magnet material and size, big horsepower output system, the relative increase in difficulty.
Get Rid of Dependency With An Electric bike
With the environmental impact of the recent Gulf Coast oil disaster still largely unknown, it is becoming abundantly clear that we need to greatly cut down our dependence on gas. One way to do this is to spend ,1000 to buy a brand new electric bike. What if you don’t have that kind of money to spend? If you choose the best payday loan lender like, be assured that there are many benefits you are likely to acquire. But it is advisable to think carefully before you decide to apply for your loan. This is because after you have applied for this type of a loan, you need to plan on how to repay it. That is why it is essential to ensure that you plan carefully and know some of the basic ideas to consider. The following therefore are some of the benefits of payday loans.Visit our website at for more details.
With a little help and a small investment, you can do this yourself. Converting your own bike from gas to electric is not all that difficult to do. I know someone with a 1995 Toyota Corolla that converted his bike at a cost of five hundred dollars. That’s a fraction of what a new bike costs today.
The easiest way to do this is to turn it into a family project. A few simple steps is all it takes:
1. You will need a detailed plan on how to convert your bike into an electric bike. It can be a gas or diesel vehicle.
2. A garage that you can use as your work space, meanwhile you can put your car in a carport.
3. Simple every day tools including wrenches, drills, pliers and screw drivers.
Next, you will need a large brushless motor (9 inches or larger) and batteries. Keep in mind that DC motors can be used but they are more costly to obtain and harder to install. Therefore, I recommend you stay with a brushless motor and keep it simple.
You can, buy all the parts brand new or you can use the sources of free brushless motors and free industrial batteries listed in our plans. The parts are going to be your biggest cost of the project.
Sourcing the parts from a salvage yard is an inexpensive way to get your parts. Since a brushless motor will likely last longer than you will own your bike, using salvaged motors is prudent. Your bike will likely rust out from under you before the motor gives up.
After sourcing your brushless motor and batteries, you have to take out the gasoline engine from your bike. You will want to rent a hoist or find a mechanic to help you lift the heavy engine out of the bike.
Finally, leaving the clutch and flywheel assembly intact and detaching the rest will complete the removal job. This will leave you the room you will need for the batteries and brushless motor mounting.
It is very important that you use a standard transmission vehicle for the conversion because automatic transmissions won’t work. However, you will not have to shift gears once the conversion is completed. You will drive the electric bike just like you would an automatic transmission bike. Just put it in gear and go. When you stop, the engine stops too. The engine doesn’t idle or require clutching like a gasoline engine.
The acceleration takes a little getting used to as there won’t be a vehicle in town that will beat you when taking off from a stop light. You’re not driving a golf bike.
Building your own electric bike will be very rewarding. Especially, when you no longer have to spend time and money pumping gas to fill up your tank. Your electric bike will be able to go at least 50 mph and travel up to 100 miles on a single charge. How exciting!
The price for gas is going to continue to rise as we continue to deplete its resources. Now is the best time to start your own bike conversion project.
Working Principle of brushless dc motor
A, Brushless motor works through the the alternating electromotive force of armature coil,by the commutator with brushes for the role, so that leads from the brush end into the DC when the force of the principle. EMF direction is determined by the right-hand (magnetic induction line to the palm of the hand, thumb pointing to the direction of conductor movement, the other four fingers pointing is the direction of the electromotive force induced in the conductor.) Instant shown in Figure 1.1, the conductor ab, cd induction force direction by a and b point to point by d c. A positive polarity when the brush, brush B was negative.
Figure 1.1 brushless motor theory model
When the coil is rotated counterclockwise 180 °, then the conductor cd in the N pole, the conductor ab in the S pole, the force of the conductor are changed direction, respectively.
Figure 1.2 brushless dc motor theory model
Seen from the figure, and the brush contact with the conductor A is always located at the N pole, the same, and brush contact with the conductor B is always lower in the S pole. Therefore, A is always positive polarity brush, brush B always negative, so the brush end can lead to changes in the direction of change but the size of the pulsating force. If the increase in the number of coils on the armature, and in accordance with certain rules to connect them together, can reduce the level of pulsating, direct current electromotive force can be obtained. This is the brushless motor works.
Second, the working principle of DC motor force of the conductor with the left hand rule to determine direction. This form of electromagnetic force acting on the armature a moment, this moment is called the rotating motor, electromagnetic torque, the torque direction is counterclockwise in an attempt to make the armature move counterclockwise. If the electromagnetic torque to overcome the torque on the armature resistance (eg resistance caused by the friction torque, and other load torque), the armature will be able to counter-clockwise spin.
Figure 1.3 DC motor theory model
When the armature turn 180 °, the conductor under the cd to N pole, S pole to the next conductor ab, due to the current direction of the DC power supplies unchanged, still flows from the brush A, the conductor cd, ab, the B from the brush out. At this time the direction of conductor cd into force from right to left, conductor ab direction from left to right by force, the electromagnetic torque is still counter-clockwise direction.
Figure 1.4 DC motor theory model
Therefore, the armature upon rotation, the commutator with the brush commutation of the current role of DC current alternately flows from the conductor ab and cd, so long as the coil in the N pole side, the one by the electric current direction is always A brush into the direction and under the S pole, always out in the direction B from the brush. This ensures that each side in the very next coil current is always in one direction, the direction to form a constant torque, the motor can be continuously rotated. This is the DC motor works.
How to disconnect the bldc hub motor for electric bike?
Spring come,nice days to ride e-bikes.But when you take out of your old e-bike from warehouse and are going to ride it.Suddenly you would find there is strange noise from hub motor .
These days the electric bike motor are brushless gearless and used for electric bike widely.It was made of rotor-winding,magnet,hub,covers,axis,bearings…
If this bike motor has strange noise,generally it’s from rotor-winding rub magnet or the bearing is broken.It’s easy to solve it.The important is to disconnect this electric hub motor.
You should prepare some tools:
1.Hexagon wrench (Necessary)
2.Hammer (Necessary)
3.Screwdriver
Disconnect hub motor Step 1:
Take off nuts and gasket on axis and use hexagon wrench to loose 16 screws.
Step 2:
Make the hub motor stand and cable is bent inside.Left hand hold the hub motor and use hammer to knock the axis.
Step 3:
After some knock,the cover will take off hub.
Step 4:
Use the same way to knock the other axis,the other cover will also take off hub.
Step 5:
When both side covers are off hub,next we should take out the rotor-winding.Make the axis stands on the ground,both hands press hub motor,the rotor-winding will out of hub.
Step 6:
Check magnet around inside hub,if there is some metallic impurities stick on magnet.Please remove it.If no,but found some friction trace on magnet.Please check around the rotor-winding and remove some glue around the steel.If not,please check the bearing inside the cover.Use a little finger hold inside the bearing,use the other hand to turn cover,faster,better.If you hear some noise.Please replace bearings.
By now,you have solved problem.