Author Archives: leafmotor - Page 8

electric bike kit for e-bike

Posted by on January 15, 2022 Comments Off on electric bike kit for e-bike

Q:I want to buy for my Merida cross 5100:
-Front bike hub motor 48 V/ 1000W
-48V Thumb Throttle
-Battery LEV-High Speed 4812
– wires to throttle and battery.

But I have the questions:
1.I need spokes for 28″ wheel. Are they attached to motor, and how much are they if not?
2. The battery could be fixed only on trunk or on frame too?
3. I`m living in St. Petersburg, Russia. What type of delivery is most economic and how much it will be?

Answer 1:The most economic is that ship by international parcel.It’s much cheaper than EMS.We often use this way to ship packages to Russia.But It takes long time to ship and hard to track the status of package.
About your order,I want to give your some suggestion:
1.This 48V/1000W motor is good.Most of our customers have used this motor more than 3-5 years and never meet problem.
2.Thumb throttle,No problem
3.Li-Battery costs expensive,but its life is short.Though many battery companies called their batteries have high quality,it’s not true.Most of Li-batteries will meet problem in 1 year.For example:your notebook PC’s li battery.
Do you have brushless controller to drive this 28″ hub motor?

Answer 2:spokes may in attachment hub motor
please email to leafmotor:sales@leafmotor.com
You also order electric bike conversion kit on leafmotor’s internet shop.
And DIY your favorable bike kit.

16 inch 36V 250W front electric hub motor kit

Posted by on January 15, 2022 Comments Off on 16 inch 36V 250W front electric hub motor kit

With the price of gasoline rise and pollution,a bicycle is good for an environmentalist.

Riding a bicycle is a great non-polluting way to get exercise and get around, but a steep hill or a long commute can turn into an unpleasantly sweaty affair. Converting a bicycle into an electric bicycle can create a vehicle with all the advantages of a regular bike, but with a little power assist to get past the disadvantages. You can assemble a set of components on your own or buy a matched electric bike conversion kit!

Compare to buy a new electric bicycle,order an electric bike kit to convert your existing common bicycle to be electric,less cost.

Leafmotor has one new type of e bike kit for old men and children.
It’s a 16″ front 36V 250w electric bike kit that includes:
1.16″ 36V 250W front casted brushless gearless hub motor is fit for 100mm front fork.
2.36V 250W 6-MOSFET brushless motor controller working with LCD,display speed,mileage,battery gauge..
3.Twist throttle or thumb throttle(default is twist throttle)
4.Brake lever
5.Three button ON/OFF switch is used to control front&rear lights,horn,cruise…

This hub motor is make up of aluminium hub,cover,magnet,rotor, winding,axis etc.The net weight is about 5.13kg,use 16×2 1/4″tyre. Motor speed,we can customize according as your actually need.

check your electric bike conversion kit system

Posted by on January 15, 2022 Comments Off on check your electric bike conversion kit system

Received electric bike kit,but it doesn’t work.How to test this system?

When you put on your li battery,three leds on throttle should light together.If only red led is on,please check your battery.If your battery shows 59 volts and three leds is also on.But when you turn your throttle,only red led is on.The problem is from this EV battery.

Use a voltmeter to measure,supply power to your controller and measure as below:

1.Six-pin hall sensor connector(red,black,green,blue,yellow wires)
..The voltage between red and black wires is about 4.5V;
..The voltage between green and black wires is about 4.5V;(use your hand to turn the wheel,the voltage will change from 4.5V~0V)
..The voltage between blue and black wires is about 0V;(use your hand to turn the wheel,the voltage will change from 0V~4.5V)
..The voltage between yellow and black wires is about 4.5V;(use your hand to turn the wheel,the voltage will change from 4.5V~0V)

2.Three-pin connector to throttle(black,red,green wires)
..The voltage between red and black wires is about 4.5V;
..The voltage between green adn black wires is about 2.3V;

3.Two-pin connector to handle lever(white and black wires)
..The voltage between white and black wires is about 4.5V;

4.Two-pin connector to crusie(brown and black wires)
..The voltage between brown and black wires is about 4.5V;

5.Three-pin black SM connector is used for PAS.
6.1 pcs of purple wire should be connected to the positive of battery(It seems a lock)
7.Two grey wires are used for HALF/FULL speed.

If you can get these data,the system NO Problem.

Bldc stepper motor for electric bike

Posted by on January 15, 2022 Comments Off on Bldc stepper motor for electric bike

In the subsection of section Classification of electric bikes we looked at options for motors used in electric bicycles, their positive and negative sides.

Let’s try to analyze and compare the characteristics of electric motors (bldc hub motor and bldc stepper motor)from one well-known manufacturers: Leaf Motor (China).

Leaf Motor produces sets with a motor-wheels, and the other kits that use a chain drive.
The analysis will be based on data from well-known owners of electric bikes site EValbum, the characteristics of the manufacturer, and other sources on the Internet. Therefore all figures are approximate, and the findings are an expression of opinion ePowerBikes.ru

As stated by bldc hub motor, voltage motor-wheel independent maximum speed:24V – 25 km / h, 36V – 32 km / h, 48 V – 50 km / h. These data are confirmed by practical measurements elektrovelosipedistov. The maximum velocity at the start line set bldc stepper with 42 km / h and end with 120 km / h. Those cyclists who speed up to 30 miles is enough, can choose a motor-wheel 24V,36V,or 48V.

For practical information, electric bikes with a motor-wheel 36V 500W and lithium-phosphate battery 10Ach a maximum speed of 32 km / h and can cover a distance of 50 km. For those who want to ‘fly’ at speeds above 50 km / h, suitable set of Leafmotor 601kit-1 48V 1000W e bike kit.

Compare sets with the same maximum speed – 45 km / h – a new set 601kit-1 48V 1000W bldc hub motor and bldc stepper 48V 500W. Based on the characteristics of graphs,we choose the rate at which engines operate most efficiently, it is 40 km / h for both.

For the same power consumption in this mode – 420-440 watts, at the time of bldc stepper motor is a little more, but this is neglected. It turns out that energy costs are the same at a speed of 40 km / h. We obtain a theoretical figure 10.5 Wh / km, although in practice the number is likely to be greater. Now suppose that we face a steep hill. The maximum torque developed HBL hub motor – 30 Nm, bldc stepper motor – 38 Nm.

For the calculation we use a calculator elektrovelosipedista. Let Curb weight of a bicycle with the stepper motor – 100 kg, the rise of 7% of 3.5 km. To overcome this recovery time is needed more than 26 Nm on the wheel 26. ” Power expended by the motor-wheels 601kit-1 e bike kit is more than 1060 W at a speed of 35 km / h. Total energy costs – 106 Wh.

What makes it with bldc stepper-kit? He switched to the lowest gear, increasing time and decreasing the rate of 2.4 times (for cassettes with a maximum star 34t). At 2600 revs / min, torque on the shaft of the gearbox – 11 lb lost by power – 390 watts, speed – 14.5 km / h. Cost of energy to overcome lift – 94 Wh. Switching gears allow the rider to use the bldc stepper with the maximum efficiency of ~ 83% versus 73% for motor-wheels 601kit-1. As you know, the availability of transmission system for a bicycle greatly expands the range of effective use of a set of bldc stepper motor. These are one of the best available right now,s o if your´re looking for one, check it out. 9-14 cassette on the wheel 26 “will change the torque of 6 to 60 Nm and a speed in the range of 11.5-45 km / h (about 2100-2900 revs / min) at an efficiency of above 80% (included efficiency gearbox and chain drive). Efficiency of the motor-wheels 601kit-1 has a maximum value of 78% of torque 10-16 Nm.

It is logical that upon arrival at the ideal surface Bonneville Salt Lake in Utah, at 40 km / h, both test sets will spend the same amount of energy. But as soon as the trial will move to an area with hilly terrain, a set of bldc stepper will be more economical than 601kit-1, and of course will be able to overcome the ups who his opponent will not under force.

We note again that the higher efficiency is achieved when using leafmotor’s bldc stepper motor in the range of maximum efficiency, extended thanks to gear bike.

Bike kit=bike motor+motor contorller?

Posted by on January 14, 2022 Comments Off on Bike kit=bike motor+motor contorller?

With gasoline price ↑ day by day,more and more bike fans from Europe and North America would like to convert their bicycle into electric bicycle, because of some reasons,it’s necessary to convert by their selves:
1.Ride a common bicycle for a long distance is very tired,hope have an electric bicycle
2.Buy an electric bicycle,it’s too expensive and single type is not everyone likes;
3.Buy a bike kit,the best choice.Cost less and still can use common bicycle

1 set of bike kit includes: 1 pcs of bike motor with rim,1 set of brushless motor controller,1 set of throttle,1 set of brake leaver,1 set of switch,1 set of battery and front&rear lights,freewheel,disc brake…

Leafmotor has all kind of bike kits are fit for Europe and North America.
Eg:20″ 24″ 26″ 27.5″(650b) 700c 28″ 29″ 27″ rim front & rear wheel with 36V 750W&48V 1000W motor,these 36V kits work with 12-MOSFET motor controller and 48V works with 15-MOSFET brushless controller,have thumb throttle and twist throttle for customers to choose.Front kits are fit for standard 100mm front fork,rear kits are fit for standard 135mm rear frame fork.Speed:20m/h.Rear motor can be install disc brake and front motor should use V-brake.These kits are fit for North America,but now more and more Europe fans like these powerful kits.

If you are in Europe,we still suggget you order 250W motor that is fit for your local law.
Eg:20″ 24″ 26″ 27.5″(650b) 700c 28″ 29″ 27″ rim front & rear wheel with 24V 250W&36V 250W motor,these kits work with 6-MOSFET controller,LCD.This LDC can display speed,battery gauge,milage..Still have thumb throttle and twsit throttle to choose.Both of front and rear motor can be installed disc brake.And both fit for standard fork.Speed:15m/h

Bike kit>bike motor + motor controller..

order a bike kit from leafmotor

Posted by on January 14, 2022 Comments Off on order a bike kit from leafmotor

Oct 12th,2011 Order a bike kit from leafmotor’s Internet shop.
Detail:Bike Conversion Kit Item# 700c 701kit -1 -36F
Product list:
1.700c 36V 250W HBM-011 brushless geared bike motor front wheel,more powerful than others in the market
2.36V brushless controller working with LCD can display speed,milage,battery gauge..It’s very cool.
3.twist throttle looks nice
4.brake lever
5.three-button switches
6.PAS
Oct 14th,2011 Leafmotor shipped my package to ××× CA,USA
EMS tracking number:EE266×××718CN
Oct 17th,2011 Monday morning received my package.
Very surprize with quick and nice service.
See my package:

your choose of bike kit

Posted by on January 14, 2022 Comments Off on your choose of bike kit

The interest in electric bicycles and other Light Electric Vehicles (LEVs) is exploding as gas prices rise across the globe. LEVs are perfect for those who are tired of sitting in traffic or being cramped into crowded public transportation. But with any major purchase, be sure to do your research. Here are 3 things you should keep in mind before making your purchase.

As gas prices rise across the globe, so does the interest in electric bicycles and other Light Electric Vehicles (LEVs). These LEVs are perfect for those who are tired of sitting in traffic or being cramped into crowded public transportation. But like any major purchase, it’s worth doing right. Here are three things you should keep in mind before making your purchase.

Bike Motor Kit?

One of the first questions you’ll face when upgrading to an electric bicycle is whether to buy a separate bicycle or upgrade your current one. To upgrade your current bicycle, you can purchase a motor kit designed for this purpose. This might seem intimidating – but don’t let it be. All the best electric bicycle motor kits come with easy-to-follow installation instructions. Installation is quick, too. You could get your kit and be riding your new bike in the same day. For those who prefer to be hands off, there are plenty of options for buying ready-to-go bicycles. Both of these options function just like a normal bicycle except with some extra battery assistance. You won’t be getting the same speed and power as you would from a motorcycle.

Know Your State’s Law

If you’re planning to purchase an electric bicycle to use in the United States, you need to be aware of your own state’s laws. Most states hold up the national policy that electric bikes must operate under 20 mph and have a limit of 750 watts. However, the companies who produce these bicycles are not regulated. This means they could produce a bicycle or motor kit that could be illegal. Also, most states don’t require you to get special insurance for your electric bicycle as you would need for a regular company. But you’ll want to check the Internet for any changes in policy that might occur. Since electric bicycles are relatively new, the laws and regulations around them could change very quickly.

Choosing a Battery

When purchasing an electric bicycle or a motor kit, you’ll come across various options for the battery power. More than anything, the choice of battery depends on how you will be using your bicycle. Riding in hilly areas or adding additional weight by pulling a trailer will drain battery power faster. Your best selection would be a Lithium Ion (Li Ion) battery as it surpasses all other battery types in the number of recharge cycles it can go through. Basically this means that you can go longer without having to purchase a new battery. Also, just like all other batteries, these batteries come in different voltages. Though the higher voltages will cost you more money, they will last longer and perform better, we offer you including financing assistance.

Purchasing an electric bicycle for the first time can be a confusing experience. However, deciding whether you want a new bike or a motor kit, knowing your local laws, and choosing the best battery for your needs will help you make the best purchasing decision possible.

Electric bike for fun

Posted by on January 14, 2022 Comments Off on Electric bike for fun

Amid today’s high gas prices and concerns about global warming, an electric bike is an economical and sensible choice. And beyond that, it’s downright fun.

As gas prices soar and concerns grow over global warming, alternative fuel vehicles are gaining traction. When it comes to cars, trucks, and SUVs, a hybrid is currently the most popular alternative to a gas powered engine, you also have to make sure you use the best which for me it has always been Oneureinsurance and an accident lawyer, just in case. If you need new tires for your truck, you can get your truck wheels online. In addition, visit services for more information. I do business. But when it comes to short-range commutes, say 20 miles or less, an electric bike is a fun, economical, and environmentally friendly option. For only pennies, an electric bike can get you from place to place without breaking a sweat and without the hassles of traffic congestion.

An electric bike has pedals like an ordinary bicycle, and you can use those pedals to propel yourself under your own power. But the electric bike also has an electric motor, which you can use to augment your pedaling. The supplemental power is useful when starting from a stop or when riding against the wind. Alternatively, you can let the electric motor provide all the power while you sit back and enjoy the ride. This makes an electric bike one of the most versatile vehicles around. There are even models of electric bikes that fold up for easy storage or travel, as well as recumbent electric bikes, which will take bicycling to a new level of relaxation (just don’t fall asleep at the wheel!). Just in case of a truck accident, call for legal advice and counselling. Get he best professional lawyers here.

An electric bike can be purchased as an off-the-shelf item, or you can purchase bike conversion to convert most any bicycle to an electric bike. The important factors to consider when selecting an electric bike are battery life (which determines how far you can travel on a charge), speed, and durability. Today’s electric bikes take advantage of recent advances in battery technology. Many electric bikes are powered by nickel-metal-hydride or lithium ion batteries, which can give a travel range of one two hours. Most electric bikes are capable of reaching speeds of 10 to 20 miles per hour. Durability is an important consideration, and like anything, you get what you pay for. You can spend under $500 for an electric bike, but the quality may disappoint you. The better quality electric bike can be purchased for around $500 to $1000. Check your local laws, but generally there is no registration required for an electric bike.

bldc motor starting frequency

Posted by on January 14, 2022 Comments Off on bldc motor starting frequency

bldc motor starting frequency is not too high, it is just starting because bldc motor speed is zero, the starting process, the load torque in addition to overcoming the resistance torque, but also to overcome the inertia of the rotating part of masking, so when the motor starter than in the burden of continuous operation as the most important.

If the starting pulse frequency is too high, the rotor speed to keep up with the speed of the stator rotating magnetic field, so the first step over the position far behind the equilibrium position, the subsequent step in the rotor speed increased marginally, while the stator magnetic field still pulse frequency proportional to the speed of forward rotation, the equilibrium position of the rotor and increasing the distance between the final position for the rotor dynamic stability region fell outside the emergence of-step or oscillation, and therefore the motor can not start.

In order to properly start, starting frequency is not too high, when the motor starts and then gradually increased frequency.

lead-acid electric bike battery

Posted by on January 14, 2022 Comments Off on lead-acid electric bike battery

One pair of lead-acid electric bike battery business of the special rectification action in the country’s largest production base bike conversion – Jiangsu, causing a chain reaction.

Electric car “sit in prices,” four or five hundred

“The electric bike battery I bought earlier this year, or a $ 500, now 700 yuan of how to become?” July 4, in Nanjing Ruijin Road, a brand of electric automobile electric car shop floor, the public dissatisfaction Chan asked shopkeepers.

Reporters visiting the market in more than 10 shops, each shop owner in the consumer, “Mozuipizai.” “After all, because electric bike battery in the price.” One owner said, the state strengthened the intensity of lead-acid electric bike battery after remediation, electric bike battery began to demand, “this two-day media a report, electric bike battery factory ‘ride in prices’, each up $ 20 a Electric cars use four electric bike battery, a rose is 80 yuan. ” Reporters asked a number of shops that sell, an electric car electric bike battery is good is 1,000 yuan, the poor have five 600.

The owner said, yesterday morning, the boss put the ready cash around to buy electric bike battery, “I heard that this month will be going up now are not we save point, it could take money can not buy, these days can only be changed supply channel. ”

electric bike battery prices, pushed up the price of electric cars. In a province famous brand of electric car shop, the boss out price list to reporters, “honest”: “In mid-June, we all sales shop in Nanjing uniform prices, the average one or two hundred.” But one industry price list after reading quietly told reporters, “The price of small cars rose two or three hundred dollars, increased more than 400 yuan.”

One has been engaged in the sale of electric vehicles for many years the owner said that from 2007 to 2009 the price of electric vehicles all the way up, we all make money on the entire chain. After 2009, rapid expansion of production capacity, the average price has declined by 400 yuan. “Now the electric car brands are doing the final assembly of integrated accessories factory prices rise, the pressure will certainly pass back.”

Reporters look at different stores that market, different brands, price increases are not the same, some tens of dollars, and some two hundred dollars. Suzhou, a brand of electric car dealers say,mainly a small number of big brand distributors and brand agents, their resilience and weak, big brand distributors in order to maintain sales volume, prices rose less up to less. “Electric bike battery prices, car prices have a good reason brewing end of this month, the price of electric cars will certainly continue to rise.”