Увод
This manual provides detailed instructions for the installation, operation, and maintenance of your Varstrom 48V 1500W E-Bike Conversion Kit. This kit is designed to transform a standard bicycle into a powerful electric bicycle, featuring a brushless rear hub motor and a VD18MT Touch Display for intuitive control. Please read this manual thoroughly before installation and use to ensure proper function and safety.

Image: The Varstrom 48V 1500W E-Bike Conversion Kit, showcasing the rear hub motor and its application on a mountain bike.
Шта је у кутији
Your Varstrom E-Bike Conversion Kit includes the following components:
- 1500W Rear Hub Motor (pre-laced into rim)
- Controller and Controller Box
- LCD Display (VD18MT Touch Display)
- Brake Levers (or Brake Sensors, depending on selection)
- Тхумб Тхроттле
- PAS Sensor (Pedal Assist Sensor)
- Фар
- 1T4 Cable (main wiring harness)
- Упутство за употребу
Напомена: A 48V/52V battery is required and sold separately. The kit does not include a battery.

Image: A visual representation of all components included in the Varstrom E-Bike Conversion Kit package.
Спецификације
| Феатуре | Спецификација |
|---|---|
| Назив производа | E-bike Rear Hub Motor Conversion Kit |
| Модел | JYLT 1500W RDC |
| Ратед Волtage | 48В |
| Називна снага | 1500В |
| Максимални обртни момент | 78 Н·м |
| Max Load Speed (26") | 70 km/h (≈43 mph) |
| Ниво буке | <55 дБ |
| Струја празног хода | ≤1А |
| Називна струја | ≤32А |
| Controller Rated Voltage | 48В |
| Controller Rated Current | 18А |
| Controller Max Current | 35А |
| Лов Волtagе Заштита | 39±1В |
| Оверволtagе Заштита | 62.4В |
| Компатибилност величина точкова | 26" / 27.5" / 28" / 29" / 700C |
| Спокес | 36H*12G |
| Тип ланчаника | Cassette (compatible with 10 speeds or less) |
| Тип мотора | Brushless, Gearless Hub Motor |
| Оцењена ефикасност | >82% |
| Оцена заштите мотора | ИПКС5 |
| Motor Flange Width | 142 мм |
| Frame Dropout Compatibility | 138–146 мм |
| Дисплаи Типе | VD18MT Touch Display (1.45" IPS Screen) |
| Brake Style Compatibility | Disc Brake Only |
| Материјал | Aluminum (wheel) |
| Обавезна монтажа | Да |
Подешавање и инсталација
Захтеви компатибилности
Before beginning installation, ensure your bicycle meets the following requirements:
- Кочиони систем: Your bicycle must have disc brakes. This kit is not compatible with V-brakes or rim brakes.
- Rear Dropout: The rear dropout width of your frame must be between 138mm and 146mm. The motor axle is 142mm.
- Касета: Compatible with cassettes of 10 speeds or less. Not compatible with freewheels.
- Материјал оквира: Designed for aluminum or steel frames. Not compatible with carbon fiber frames.
Choosing the Correct Wheel Size
The kit is compatible with various wheel sizes. Ensure you have selected the correct wheel size for your bicycle. Refer to your tire sidewall for your current wheel and tire dimensions.

Image: Guide on selecting the appropriate wheel size and measuring the rear dropout for installation.
Ток инсталације
Follow these general steps for installing the hub motor:
- Check Fork Width: Verify the width of your rear fork dropout.
- Select Spacer Setup: Determine if spacers are needed based on your dropout width. For JYLT 1000W/1500W models, two spacers may be required inside the bicycle freewheel.
- Mount Motor & Torque Arm: Securely install the hub motor into the rear dropout and attach the torque arm.
- Connect Wiring & Finalize: Connect all electrical components according to the wiring diagram and secure all connections.

Image: Detailed installation flow for securing the hub motor to your bike frame, including scenarios for different fork widths.
Цомпонент Оверview и ожичење
Familiarize yourself with the kit components and their connections. The 1T4 cable simplifies wiring by integrating multiple connections into one main harness.

Слика: Оверview of the hub motor kit components and their wiring connections for a complete setup.
Упутство за употребу
VD18MT Touch Display
The VD18MT Touch Display provides intelligent control and monitoring for your e-bike. It features a 1.45" IPS screen for clear visibility and easy navigation. Use the touch screen and lever-type button for adjusting settings and viewing ride data. Connect to the "I-Bike" app for further customization.

Image: The VD18MT Touch Display, highlighting its features and smartphone app connectivity.
Режими вожње
Your e-bike conversion kit supports multiple riding modes to suit various preferences and conditions:
- Pedal Assisted Mode (PAS): Provides intelligent motor support as you pedal. Ideal for extending range and assisting on inclines.
- Throttle Electric Mode: Delivers full electric power on demand via the thumb throttle, allowing for riding without pedaling. Useful for quick acceleration or when tired.
- Ручни режим: Ride using only your own power, with the motor disengaged and battery off. Experience traditional cycling.
- Walk Assisted Mode: Hold the lower button to activate a steady 6 km/h (3.7 mph) walk assist. This feature helps when pushing the e-bike up slopes or through crowded areas.

Image: Explanation of the four distinct riding modes offered by the Varstrom system.
Одржавање
The Varstrom E-Bike Conversion Kit is designed for durability and minimal maintenance:
- Brushless, Gearless Motor: The direct-drive design of the brushless, gearless hub motor eliminates internal friction points, leading to smooth operation, extended lifespan, and reduced maintenance compared to geared motors.
- Побољшана заштита: The motor has an IPX5 rating and features waterproof cables, ensuring reliable performance in various weather conditions. The motor wiring is protected with a spring at the exit to prevent damage and wear.
- Редовне провере: Periodically inspect all electrical connections for tightness and signs of wear. Ensure brake levers and throttle operate smoothly. Keep the display clean.
- Чишћење: Clean the motor and other components with a damp крпа. Избегавајте прање под високим притиском директно на електричним компонентама.

Image: An illustration of the brushless, gearless hub motor's internal structure, emphasizing its durability and quiet operation.
Решавање проблема
If you encounter issues with your e-bike conversion kit, refer to the following common troubleshooting steps:
- Нема напајања за дисплеј/мотор:
- Проверите везу батерије и уверите се да је потпуно напуњена.
- Verify all cable connections, especially the 1T4 cable and motor cable, are secure.
- Ensure the display is properly seated and powered on.
- Motor Not Assisting/Working:
- Check PAS sensor installation and ensure the magnet disc is correctly positioned and not obstructed.
- Verify throttle connection and function.
- Ensure brake levers are not engaged, as they may cut motor power.
- Check for any error codes on the VD18MT display and consult the display's specific manual for code interpretation.
- Inconsistent Power/Jerking:
- Прегледајте све ожичење да ли има оштећења или лабавих спојева.
- Ensure the battery is providing stable voltage.
- Екран не реагује:
- Restart the system by turning the battery off and on.
- Check the display's cable connection to the 1T4 harness.
Ако проблеми и даље постоје након извршења ових провера, обратите се корисничкој подршци.
Гаранција и подршка
Гаранција на производ
The Varstrom E-Bike Conversion Kit comes with an 18-месечна гаранција произвођачаОва гаранција покрива недостатке у материјалу и изради при нормалној употреби. Молимо вас да сачувате доказ о куповини за потребе подношења захтева за гаранцију.
Корисничка подршка
For technical assistance, warranty claims, or any questions regarding your Varstrom product, please refer to the contact information provided with your purchase or visit the official Varstrom webсајт за ресурсе подршке.