Question 1

Can I install Yescom Electric Bicycle Motor Conversion Kit on tandem bike?

Accepted Answer

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The short answer is No. If you install the Electric Bicycle Motor Conversion Kit on a tandem bike, the weight of 2 riders may exceed the weight capacity of the electric wheel.
Even if the weight of 2 people is still within the weight capacity, we do not recommend installing it on a tandem bike, since it is a safety hazard to have only one person control the speed. Only install the Electric Bicycle Motor Conversion Kit on a single seat, 2-wheel conventional bicycle.

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Question 2

Can you still use the Electric Bicycle if turn the motor off?

Accepted Answer

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The simple answer is Yes. If you turn off the motor, or your battery is dead, you can still pedal your electric bicycle like you would a regular bicycle. Please note, however, that the additional weight of the e bike motor, battery and accessories will make your bike heavier, so it will be more difficult to pedal manually.

Question 3

Can you ride Electric Bicycle in the rain?

Accepted Answer

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Although the connectors on our motors are water resistant, riding an electric bicycle in the rain is not recommended as there are numerous risks involved. Moisture may still get inside the motor or your battery and may damage them. Any damage caused by water is not covered by our warranty. You also risk slipping or hydroplaning while riding and higher speeds, which can cause serious injury.

Question 4

How to achieve the maximum speed displayed on advertisements

Accepted Answer

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The maximum speed advertised is achieved when the battery is fully charged. Therefore, it is recommended to use the recommended battery parameters. The speed of cycling is influenced by many factors, such as payload, battery level, wind resistance, etc., so this speed is only for your reference. The specific speed that can be achieved depends on the actual situation.

Question 5

How do I turn on cruise control?

Accepted Answer

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When the riding speed is more than 7 km/h, please press and hold the Down button to enter the cruise mode. Once the LCD shows the cruise function logo (C), it means you have entered the cruise mode successfuly. If you want to revoke cruise more, please brake the bicycle or press and hold any other buttons.

Question 6

What should I do if I still need to shift gear one the ebike?

Accepted Answer

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Since attached brake levers are required to be used on the ebike compulsorily and it does not come with gear shifters, if you still need the gear system on your ebike, you may need another individual gear shifter set (7 gears). All you have to do is remove the gear system from the original brake lever and reconnect it to the new gear shifter set. Brake system and gear system should be separated on the ebike. We recommend you go to automobile repair shops with standard business license for help if you are not fimilar with DIY bike and ebike.

Question 7

What size are the bearings , bolt size?

Accepted Answer

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The bearings are 14mm diameter and the bolts are M14*1.5.

Question 8

What is the difference between the front kit and the rear kit?/ Which one is better? Can I install front kit on rear wheel?

Accepted Answer

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Front (Rear) kit is the one that motor is on the front (rear) wheel, motor generates power to drive the bike forward. We also have attached 2 photos of our 26in 48v 1000w Electric Bicycle Motor below for reference, the left one with gears is rear kit, as the right one is front kit.
Adension on the rear wheel increases as the center of gravity of the bike moves backwards when accelerating, rear kit has more efficient acceleration and stability. If you mainly use manpower and need power assistance while riding, or you don't want to change the rear wheel or brake system of the bike, front kit is able to satisfy your needs. Generally, rear kit is the better one.
We do not recommend you install the front kit on rear wheel, please only install front kit on front wheel, rear kit on rear wheel.

Question 9

Ebike: What is PAS?/ How does PAS work?/ Is the level of PAS adjustable?

Accepted Answer

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There is a ring of magnets mounted on the pedal crank and a sensor fixed to the bottom bracket. As the pedal crank turns, the sensor reads the rate of pedaling. The faster the pedal cadence, the faster the controller will make the motor to spin. In other words, the motor works automatically to drive the wheel when you pedal so you could save your energy. The fast you pedal, the fast the wheel runs. The level of PAS is not adjustable as there is only one mode for PAS.

Question 10

Ebike: How to install PAS Sensor?/ Which side should the PAS be installed on?/ Is the PAS Sensor directional?

Accepted Answer

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There are 2 different types of PAS accessories from 2 different suppliers of our ebike kit. One is the splitted body version, which is attached to YES3510, YES2467, YES1449. First, remove the non-drive crank arm which is on the side without the chainring/ sprocket (PAS Sensor can not be installed on the other side). Then remove the bottom bracket as well. Put the receiver ring (the silver part) on the frame through the axle, then thread the bottom bracket back and install the outer magnet ring (the black part) on the outside next to the bottom bracket in the same way like the disc. If your bike does not have bottom bracket, please fix the receiver ring on the frame with glue. Please note that the arrows on the magnet need to be consistent with the direction of pedaling forward, the gap between the receiver and magnet is 1-2mm, or the PAS would not work. The other one is the one piece version, which is attached to YES2463 and YES2464. First, remove the non-drive crank arm which is on the side without the chainring/ sprocket (PAS Sensor can not be installed on the other side). Then install the PAS Sensor on the axle in a certain direction as per manual.

Question 11

Ebike: How to install a brake disc?/ What sizes of brake disc fit our conversion kits?

Accepted Answer

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Remove 6 hexalobular internal screws (star socket screws) on the hub first (refer to pic), then align 6 bolt rotors on the brake disc to 6 screw holes on the hub and retighten 6 screws back. All sizes brake disc (mostly 140mm, 160mm, 180mm and 203mm) are compatible with the hub of all our conversion kits. Please select proper sizes of brake disc according to the spacing between the hub and fork. Choosing the sizes also depends on how the heat transfer is taking place from the disc to provide the best possible heat dissipation to avoid the disc to wear out. Bigger brake discs have better heat dissipation.

Question 12

Ebike: Does the battery charge when the wheel spins freely/ brakes?

Accepted Answer

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No, there is no Energy Recycle System for our conversion kits. Energy would not be recharged to the battery by spinning or braking.

Question 13

Ebike:  What to do if "03_info" / "06_info" on the LCD.

Accepted Answer

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"03_info" represents Motor hall signal Abnormality.
1. Please try steps on the manual of troubleshooting first.
2. Please check if there is any rupture, rust or laxity on connections between controller and motor, controller and LCD. Make sure every pin and terminal is connected to another properly. Every connector is inserted in another to required position (the "'" sign), especially the 9 pins connectors of motor, controller and LCD.
3. Please contact our customer service and provide us with a video of the acceleration and operation of the wheel (off ground and without loading), the display on the LCD and all connections included.
"06_info" represents Motor or controller has short circuit Abnormality .
1. Please try steps on the manual of troubleshooting first.
2. Please lift the bike so wheels are off the ground, spin the wheel that carries motor when power is on with hands to see if a strong resistance.
3. Please ontact our customer service and provide us with a video of acceleration and operation of the wheel (off ground and without loading), battery indicator lights on the throttle and battery information on the LCD included.

Question 14

Ebike: Unknow noise from the motor wheel.

Accepted Answer

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1. Please lift the bike so wheels are off the ground, spin the wheel with hands (power off) to check if noise exists. If so, noise could come from contacting between the frame of bike and the wheel. Please check if something wrong on the wheel or frame of bike. Also, please check brake systems on the wheel and frame of bike (e.g. the gap between brake disc and cliper). As well as the spokes.
2. Please unplug the connection of the controller and motor and replug it again to have a try. Please make sure the connectors and pins are clear, each connector is inserted in another to required position (the "'" sign).
3. Please try to run the wheel (make sure the bike is off ground) with throttle to check if the noise occurs. If so, please take a video of this situation (noise includes) and provide our constomer service with it so we can verify the issue quickly and provide a proper resolution.

Question 15

Ebike: Can I use other throttles or brake levers?

Accepted Answer

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Please be sure to use the throttle and brake levers that are attached and included in the package.
1. For conversion kits with a thumb throttle, they don't work with a twist throttle instead. Similarly, those conversion kits with a twist throttle don't work with a thumb throttle instead.
2. Please kindly note that the attached brake lever carries power-off function which can stop motor from working when braking. So please do not use other brake levers in our conversion kits.

Question 16

The PAS of Ebike does not work, how to fix it?

Accepted Answer

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There are several reasons that may cause the failure of the PAS sensor:
1. Installing PAS sensor in wrong direction.
2. Gap between PAS sensor and axle is too wide or narrow.
3. Connection for PAS to controller is loose or defective.
4. PAS accessory is not functional.
Please follow the below troubleshooting to fix the issue:
1. Please check the direction of PAS sensor and make sure it is installed as instruction shows.
2. Please check spacing between PAS sensor and bike axel (normally 1.5-2mm gap).
3. Please make sure connection between PAS sensor and controller are sercured and connected.
4. Please connect multimeter to black and red wires of PAS sensor, see if voltage is normal as the instruction indicated.

Question 17

Can I install both rear and front ebike kit to make an All-wheel drive electric bicycle?

Accepted Answer

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The short answer is No. For each bicycle, only 1 Yescom Electric Bicycle Motor Kit can be installed, as each kit contains 1 controller and 1 throttle, and one controller can connect with 1 throttle only, and the throttle can only be installed on the right hand bar. You are unable to wire 2 controller and 2 throttles together.

Question 18

Is there a fuse for the controller and the battery?

Accepted Answer

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Yes there is a fuse on the red extension which is included in the package. The main purpose of the fuse is to provide a overcurrent protection, when the battery is unstable, which may cause the current or voltage in the circuit too high, it will burn the fuse to power off the electric bicycle. If without a fuse, constant overcurrnt may cause serious damages to the kit and even cause a fire.

Question 19

Is the hub of the conversion kit direct drive and gearless?

Accepted Answer

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Yes the motor is a gearless and Direct Drive motor so there is no need to shift. Compared to geared motor, direct-drive motors are capable of higher top speeds on a flat road, so if you live in a flat area and would like to get a more powerful, quieter and faster conversion kit, a direct drive motor would be the best option. Introduction of ebike motor: direct drive vs geared motor:Electric bike motors primarily come in two varieties: direct drive vs geared motor. Direct drive motors or direct-drive hub motors are large, gearless hub motors that use magnetic force inside a copper winding coil to conduct power through the motor, while geared motors or geared hub motors function via a set of planetary gears (or Planetary Gear Reduction System) that control speed. Pros and Cons:Both have their advantages, mostly concerning weight, battery efficiency, and overall horsepower. A direct drive motor offers a quiet ride with higher top speeds.Geared motors provide longer rides per charge and more torque, suitable for climbing hills and riding on varying terrains.Direct drive motors are large and heavy and are harder to foot pedal with, while geared motors are small and easier to pedal without power, but are far noisier.Geared motors don't last as long as direct drive motors.

Question 20

Can change parameter or setting of LCD or conversion kit for djustment I want?

Accepted Answer

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Please kindly note that the LCD and controller are the brain of each conversion kit which comes with it, so any parameter or setting of it affects riding. For safety consideration, we do not offer any instruction on adjusting parameter or setting of the LCD or conversion kit. And we do not suggest any unnecessarily clicking on the LCD to avoid parameter and setting being changed. All our conversion kits are for daily commuting and please ride the ebike under local legislation. Speed limit and overload setting are not allowed as well.

Question 21

Electric Bicycle Conversion Kit: Can I paint the hub to match the frame of my bike?

Accepted Answer

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Yes you can paint the hub if you want it to match the frame of your bike. But please keep in mind that you need to cover the wire connections with something properly, just to make sure the paint will not spray into the wire connections. As it takes some work, we recommend you send the kit to a local auto shop to have them painted it, the man at the shop will be more professional in painting a hub.

Question 22

What is the torque rating of this e-bike? How much torque is good enough?

Accepted Answer

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We have several e-bike kits and different kit has different torque rating. Higher torque rating means a better ability to keep turning the wheel. Generally if you live in flat area and do not go up hill often, an e-bike with around 50nm torque rating is good enough, you can use it for commuting or other casual riding. Product IDTitleTorque ratingYES1449/YES24671500W 48V 26"x 4'' Conversion Kit with LCD & PAS55 NmYES24681500W 48V 26'' Conversion Kit without LCD & PAS55 NmYES2464/YES24631000w 48v 26''x 1.75" Conversion Kit with LCD & PAS60 NmYES1527/YES15281000w 48v 26'' x 1.75" Conversion Kit Without LCD & PAS45 NmYES35101000w 48v 26" x 4" conversion Kit60 NmYES35091000w 48v 20'' Conversion Kit60 NmYES351236v 750w 24'' Conversion Kit50 NmYES351136v 750w 20'' Conversion Kit50 Nm

Question 23

Can you install the Electric Bicycle Conversion Kit for me at an extra cost?

Accepted Answer

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We do not offer assembly service for the Electric Bicycle Conversion Kit, but we provide step by step instruction and you can follow our instruction to install the Conversion Kit. If you still do not know how to install it after looking at the instruction, you can take it to your local automobile repair shop and pay for a assembly service to let the technician install it for you, the cost depends upon your locality.

Question 24

The manual shows that the maximum current of the controller is 30A, but controller itself shows rated current is 13A.

Accepted Answer

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30 amp is the peak operating current value of the wheel motor, which has no direct relationship with the rated current value of the controller.

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Yescom 26in Rear Electric Bicycle Motor Conversion Kit 48v 1000w

Size: 26in Rear

Yescom 26in Rear Electric Bicycle Motor Conversion Kit 48v 1000w

Can I install Yescom Electric Bicycle Motor Conversion Kit on tandem bike?

Can you still use the Electric Bicycle if turn the motor off?

Can you ride Electric Bicycle in the rain?

How to achieve the maximum speed displayed on advertisements

How do I turn on cruise control?

What should I do if I still need to shift gear one the ebike?

What size are the bearings , bolt size?

What is the difference between the front kit and the rear kit?/ Which one is better? Can I install front kit on rear wheel?

Ebike: What is PAS?/ How does PAS work?/ Is the level of PAS adjustable?

Ebike: How to install PAS Sensor?/ Which side should the PAS be installed on?/ Is the PAS Sensor directional?

Ebike: How to install a brake disc?/ What sizes of brake disc fit our conversion kits?

Ebike: Does the battery charge when the wheel spins freely/ brakes?

Ebike: What to do if "03_info" / "06_info" on the LCD.

Ebike: Unknow noise from the motor wheel.

Ebike: Can I use other throttles or brake levers?

The PAS of Ebike does not work, how to fix it?

Can I install both rear and front ebike kit to make an All-wheel drive electric bicycle?

Is there a fuse for the controller and the battery?

Is the hub of the conversion kit direct drive and gearless?

Can change parameter or setting of LCD or conversion kit for djustment I want?

Electric Bicycle Conversion Kit: Can I paint the hub to match the frame of my bike?

What is the torque rating of this e-bike? How much torque is good enough?

Can you install the Electric Bicycle Conversion Kit for me at an extra cost?

The manual shows that the maximum current of the controller is 30A, but controller itself shows rated current is 13A.

YescomUSA - Wholesale Inquiry Form

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Yescom 26in Rear Electric Bicycle Motor Conversion Kit 48v 1000w

Size: 26in Rear

Ask a Question

Yescom 26in Rear Electric Bicycle Motor Conversion Kit 48v 1000w

Can I install Yescom Electric Bicycle Motor Conversion Kit on tandem bike?

Can you still use the Electric Bicycle if turn the motor off?

Can you ride Electric Bicycle in the rain?

How to achieve the maximum speed displayed on advertisements

How do I turn on cruise control?

What should I do if I still need to shift gear one the ebike?

What size are the bearings , bolt size?

What is the difference between the front kit and the rear kit?/ Which one is better? Can I install front kit on rear wheel?

Ebike: What is PAS?/ How does PAS work?/ Is the level of PAS adjustable?

Ebike: How to install PAS Sensor?/ Which side should the PAS be installed on?/ Is the PAS Sensor directional?

Ebike: How to install a brake disc?/ What sizes of brake disc fit our conversion kits?

Ebike: Does the battery charge when the wheel spins freely/ brakes?

Ebike: What to do if "03_info" / "06_info" on the LCD.

Ebike: Unknow noise from the motor wheel.

Ebike: Can I use other throttles or brake levers?

The PAS of Ebike does not work, how to fix it?

Can I install both rear and front ebike kit to make an All-wheel drive electric bicycle?

Is there a fuse for the controller and the battery?

Is the hub of the conversion kit direct drive and gearless?

Can change parameter or setting of LCD or conversion kit for djustment I want?

Electric Bicycle Conversion Kit: Can I paint the hub to match the frame of my bike?

What is the torque rating of this e-bike? How much torque is good enough?

Can you install the Electric Bicycle Conversion Kit for me at an extra cost?

The manual shows that the maximum current of the controller is 30A, but controller itself shows rated current is 13A.

YescomUSA - Wholesale Inquiry Form

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