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Eunorau Defender S Common Problems
Despite its impressive features and capabilities, even the Eunorau Defender S may encounter some common issues that riders should be aware of. Among its standout qualities, such as the robust dual suspension system and the reliable 180mm hydraulic brakes, certain challenges may arise during ownership.
One potential concern revolves around the dual motor and single battery setup. While this configuration enhances performance, some users have reported shorter ride durations compared to single-motor electric bikes. Additionally, the LCD screen’s visibility under bright sunlight could be compromised, posing a minor inconvenience for riders.
This article aims to shed light on these common problems and provide effective troubleshooting tips to help riders overcome any challenges they may encounter with their Eunorau Defender S. By offering practical solutions and sharing real experiences of owning this model, we aim to empower riders to make the most out of their electric biking experience.
In this HTML markup, I’ve created an introduction for the article focusing on common problems and troubleshooting for the Eunorau Defender S electric bike. I’ve highlighted two distinctive features of the bike – the dual motor and single battery setup, and the LCD screen’s performance under bright sunlight – which may lead to potential issues. The introduction emphasizes the aim of the article to provide practical solutions and share real experiences to help riders address these challenges effectively.htmlCopy code
Specifications
| Name | Description |
|---|---|
| Price | $3,999.00 |
| Type | eBike |
| Release Year | 2021 |
| Brake Type | Hydraulic Disc Brakes |
| Drive Type | Mid-Drive |
| Frame Material | Aluminum |
| Gears | 11 |
| Max Range (mi) | 81 mi |
| Top Speed (mph) | 30 mph |
| Watts | 750 |
| Weight (lbs) | 84 lbs |
| Weight Capacity (lbs) | 440 lbs |
| Wheels | 2 |
| Wheel Diameter (in) | 26 in |
| Wheel Width (in) | 4 in |
In this HTML markup, I’ve created a subsection entitled “Specifications” with a table containing two columns: “Name” and “Description”. Each row of the table corresponds to a specification of the Eunorau Defender S electric bike, with the name of the specification in the first column and its description in the second column.htmlCopy code
Features
- Dual suspension for smooth rides on any terrain
- Fat tires providing stability and grip
- Full suspension frame made from durable 6061 aluminum alloy
- 180mm hydraulic brakes for reliable stopping power
- Samsung lithium-ion battery for longer rides
- Customizable riding experience with five levels of pedal assist
- Sleek and stylish design available in three colors: forest cobra, gray, and black
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Causes of Common Problems with the Eunorau Defender S
In this section, we will explore the underlying causes of common problems that may arise with the Eunorau Defender S electric bike. Understanding these causes is essential for effectively addressing and troubleshooting any issues that may occur during ownership.
Later in this article, we will delve into potential solutions and practical tips to overcome these common problems, ensuring that you can enjoy a smooth and hassle-free riding experience with your Eunorau Defender S.
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1. Battery Drainage Issue on the Eunorau Defender S
Description of the problem: Some users may experience rapid battery drainage on their Eunorau Defender S electric bike, leading to shorter ride durations than expected.
Cause of the problem: This issue can occur due to various factors, including prolonged use of high-assist levels, inefficient battery management, or potential defects in the battery itself.
Troubleshooting step-by-step:
- Start by checking the battery charge level before each ride and ensure it’s fully charged.
- Adjust your riding habits to use lower assist levels when possible, especially on flat terrain.
- If the problem persists, contact Eunorau customer support for a thorough battery inspection and potential replacement if necessary.
2. LCD Screen Visibility Issue on the Eunorau Defender S
Description of the problem: Some riders may encounter difficulties in reading the LCD screen display on their Eunorau Defender S electric bike, particularly under bright sunlight.
Cause of the problem: This issue can be attributed to the screen’s glare or insufficient brightness adjustment settings.
Troubleshooting step-by-step:
- Attempt to adjust the screen brightness settings through the bike’s control panel to improve visibility.
- If visibility remains poor, consider installing a glare-resistant screen protector or adjusting the angle of the screen to minimize glare.
- For persistent issues, contact Eunorau customer support for further assistance or potential screen replacement options.
3. Motor Overheating Problem on the Eunorau Defender S
Description of the problem: Some users may notice that the motors on their Eunorau Defender S electric bike tend to overheat during prolonged use, leading to performance degradation or shutdowns.
Cause of the problem: Motor overheating can occur due to heavy load conditions, prolonged use on steep inclines, or insufficient cooling mechanisms.
Troubleshooting step-by-step:
- Avoid excessive strain on the motors by using lower assist levels on steep inclines or during extended periods of riding.
- Allow the motors to cool down periodically by taking breaks during long rides, especially in hot weather conditions.
- Ensure proper airflow around the motors by keeping them clean and free from debris or obstructions.
4. Brake Adjustment Issues on the Eunorau Defender S
Description of the problem: Riders may encounter difficulties in adjusting the brakes on their Eunorau Defender S electric bike, leading to suboptimal braking performance or uneven brake pad wear.
Cause of the problem: Brake adjustment issues can stem from improper initial setup, cable tension problems, or worn brake components.
Troubleshooting step-by-step:
- Inspect the brake cables and adjust tension as necessary to ensure smooth operation and proper braking response.
- Check for any signs of brake pad wear or damage and replace them if needed to maintain optimal braking performance.
- If adjustments prove challenging, consult the bike’s user manual for detailed instructions or seek professional assistance from a bike mechanic.
5. Controller Malfunction on the Eunorau Defender S
Description of the problem: Some riders may encounter issues with the controller unit on their Eunorau Defender S electric bike, resulting in erratic behavior or loss of functionality.
Cause of the problem: Controller malfunctions can be caused by electrical faults, water damage, or firmware/software issues.
Troubleshooting step-by-step:
- Inspect the controller unit for any visible signs of damage or water ingress and address any issues accordingly.
- Ensure all electrical connections are secure and properly seated to prevent intermittent connectivity problems.
- If available, attempt to reset the controller to factory settings or update its firmware/software to the latest version to resolve potential software-related issues.
This HTML markup presents a subsection of the main article titled “Eunorau Defender S Electric Bike Problems and Troubleshooting.” It details five common problems encountered with the Eunorau Defender S electric bike, providing a description of each problem, its potential causes, and step-by-step troubleshooting instructions to address them effectively.htmlCopy code
6. Throttle Responsiveness Issue on the Eunorau Defender S
Description of the problem: Some riders may experience delays or inconsistencies in throttle responsiveness on their Eunorau Defender S electric bike, affecting acceleration and overall ride experience.
Cause of the problem: Throttle responsiveness issues can arise due to faulty throttle components, loose electrical connections, or software glitches.
Troubleshooting step-by-step:
- Check throttle wiring connections for any signs of looseness or damage and secure them properly.
- Clean the throttle mechanism and ensure smooth operation, free from any debris or obstruction.
- If problems persist, consider replacing the throttle unit or updating firmware/software to address potential software-related issues.
7. Chain Slippage Problem on the Eunorau Defender S
Description of the problem: Riders may encounter instances of chain slippage or skipping while pedaling their Eunorau Defender S electric bike, disrupting the smoothness of the ride.
Cause of the problem: Chain slippage can occur due to improper chain tension, worn chain components, or misaligned drivetrain components.
Troubleshooting step-by-step:
- Inspect the chain tension and adjust it to the manufacturer’s recommended specifications if it’s too loose or too tight.
- Check for any signs of chain wear or damage, including stretched links or worn teeth on the chainring and cassette, and replace them if necessary.
- Ensure proper alignment of the chain, chainring, and rear cassette to prevent misalignment-related issues.
8. Display Malfunction on the Eunorau Defender S
Description of the problem: Some users may encounter issues with the display unit on their Eunorau Defender S electric bike, such as screen freezes, blank displays, or incorrect readings.
Cause of the problem: Display malfunctions can be attributed to electrical faults, loose connections, or software bugs.
Troubleshooting step-by-step:
- Check for loose connections between the display unit and the main controller, ensuring all cables are securely plugged in.
- If available, perform a reset or reboot of the display unit according to the manufacturer’s instructions to resolve potential software-related issues.
- If problems persist, consider replacing the display unit or seeking professional assistance from a bike mechanic.
9. Squeaking or Grinding Noise Issue on the Eunorau Defender S
Description of the problem: Riders may notice squeaking or grinding noises emanating from various components of their Eunorau Defender S electric bike, particularly during braking or pedaling.
Cause of the problem: Squeaking or grinding noises can result from brake pad contamination, worn drivetrain components, or insufficient lubrication.
Troubleshooting step-by-step:
- Inspect brake pads for any signs of contamination, such as oil or debris, and clean or replace them if necessary to restore proper braking performance.
- Check drivetrain components, including the chain, cassette, and derailleur, for signs of wear or damage, and lubricate or replace them as needed.
- Ensure proper alignment and adjustment of brake calipers, rotors, and drivetrain components to minimize noise and maximize efficiency.
10. Suspension Adjustment Problems on the Eunorau Defender S
Description of the problem: Some riders may experience difficulties in adjusting the suspension settings on their Eunorau Defender S electric bike, leading to suboptimal comfort or performance.
Cause of the problem: Suspension adjustment problems can arise due to improper setup, lack of familiarity with suspension systems, or potential mechanical issues.
Troubleshooting step-by-step:
- Refer to the bike’s user manual or consult with a bike mechanic to understand the proper procedure for adjusting suspension settings based on rider weight, riding style, and terrain conditions.
- Inspect suspension components for any signs of damage or wear, such as leaking seals or worn bushings, and address any issues accordingly.
- Experiment with different suspension settings and adjust accordingly to find the optimal balance between comfort, traction, and performance.
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11. Loose Handlebar Grips on the Eunorau Defender S
Description of the problem: Riders may encounter issues with loose handlebar grips on their Eunorau Defender S electric bike, leading to discomfort and reduced control during rides.
Cause of the problem: Loose handlebar grips can result from improper installation, worn grip components, or insufficient grip adhesion.
Troubleshooting step-by-step:
- Inspect handlebar grips for any signs of wear, damage, or slippage, and replace them if necessary to ensure a secure grip.
- Ensure proper installation of handlebar grips by applying grip glue or tape and firmly securing them onto the handlebars.
- Regularly check and tighten handlebar grip screws or clamps to prevent loosening during rides.
12. Pedal Alignment Issues on the Eunorau Defender S
Description of the problem: Riders may experience pedal alignment issues on their Eunorau Defender S electric bike, leading to discomfort or uneven pedal strokes.
Cause of the problem: Pedal alignment issues can arise due to loose pedal threads, worn pedal bearings, or misaligned pedal cleats.
Troubleshooting step-by-step:
- Inspect pedal threads for any signs of wear or damage and ensure they are properly tightened onto the crank arms.
- Check pedal bearings for smooth operation and replace them if there is any noticeable play or resistance.
- If using clipless pedals, adjust cleat positions to ensure proper alignment with cycling shoes for optimal comfort and efficiency.
13. Chain Dropping Problem on the Eunorau Defender S
Description of the problem: Riders may encounter instances of chain dropping off the chainring or cassette while riding their Eunorau Defender S electric bike, disrupting the ride experience.
Cause of the problem: Chain dropping issues can occur due to chain tension problems, worn drivetrain components, or improper shifting technique.
Troubleshooting step-by-step:
- Ensure proper chain tension by adjusting the rear derailleur’s limit screws and tension accordingly to prevent excessive slack or tightness.
- Inspect chainring teeth and rear cassette cogs for signs of wear or damage and replace them if necessary to prevent chain skipping or dropping.
- Practice smooth and deliberate shifting techniques, avoiding sudden shifts under heavy load conditions to minimize the risk of chain dropping.
14. Fork Suspension Lockout Issue on the Eunorau Defender S
Description of the problem: Riders may experience difficulties with the fork suspension lockout mechanism on their Eunorau Defender S electric bike, resulting in ineffective suspension adjustments.
Cause of the problem: Fork suspension lockout issues can stem from mechanical failures, insufficient lubrication, or misalignment of suspension components.
Troubleshooting step-by-step:
- Inspect the fork suspension lockout lever or knob for any signs of damage or wear and ensure smooth operation.
- Clean and lubricate suspension lockout mechanisms to maintain proper functionality and prevent sticking or binding.
- Check for proper alignment of suspension components and adjust as necessary to ensure smooth operation of the lockout mechanism.
15. Battery Charging Error on the Eunorau Defender S
Description of the problem: Some users may encounter issues with battery charging on their Eunorau Defender S electric bike, such as charging errors, slow charging, or failure to hold a charge.
Cause of the problem: Battery charging errors can be caused by faulty charging cables, damaged charging ports, or battery management system (BMS) issues.
Troubleshooting step-by-step:
- Inspect the charging cable and connector for any signs of damage or wear, and replace them if necessary to ensure a secure connection.
- Clean the charging port on the bike and the battery to remove any dirt, debris, or corrosion that may affect charging efficiency.
- If problems persist, contact Eunorau customer support for further assistance or potential battery diagnostics and replacement options.
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16. Loose Pedal Bearings on the Eunorau Defender S
Description of the problem: Riders may experience issues with loose pedal bearings on their Eunorau Defender S electric bike, resulting in pedal play or instability during rides.
Cause of the problem: Loose pedal bearings can occur due to improper installation, worn bearings, or inadequate maintenance.
Troubleshooting step-by-step:
- Inspect pedal bearings for any signs of wear or damage, and replace them if necessary to ensure smooth operation.
- Ensure proper installation of pedal bearings and tighten them securely to prevent play or instability.
- Regularly clean and lubricate pedal bearings to maintain optimal performance and extend their lifespan.
17. Loose Seatpost Clamp on the Eunorau Defender S
Description of the problem: Riders may encounter issues with a loose seatpost clamp on their Eunorau Defender S electric bike, resulting in saddle movement or instability.
Cause of the problem: A loose seatpost clamp can occur due to improper installation, worn clamp components, or inadequate tightening.
Troubleshooting step-by-step:
- Inspect the seatpost clamp for any signs of wear, damage, or misalignment, and replace or adjust it accordingly.
- Ensure proper installation of the seatpost clamp by aligning it with the seat tube and tightening it securely to the recommended torque specifications.
- Regularly check and retighten the seatpost clamp as needed to prevent loosening during rides.
18. Unresponsive PAS System on the Eunorau Defender S
Description of the problem: Riders may experience issues with an unresponsive Pedal Assist System (PAS) on their Eunorau Defender S electric bike, resulting in inconsistent pedal assistance or failure to engage.
Cause of the problem: PAS system issues can be caused by faulty sensors, wiring problems, or software glitches.
Troubleshooting step-by-step:
- Inspect PAS sensors and wiring connections for any signs of damage or looseness, and repair or replace them as needed.
- Reset the PAS system according to the manufacturer’s instructions to recalibrate sensor readings and restore proper functionality.
- If problems persist, update the bike’s firmware/software to the latest version or contact Eunorau customer support for further assistance.
19. Inaccurate Speedometer Reading on the Eunorau Defender S
Description of the problem: Riders may notice inaccuracies in the speedometer readings on their Eunorau Defender S electric bike, displaying speeds higher or lower than actual riding speed.
Cause of the problem: Inaccurate speedometer readings can occur due to wheel size calibration errors, sensor misalignment, or signal interference.
Troubleshooting step-by-step:
- Check the wheel size calibration settings in the bike’s display unit and adjust them accordingly to match the actual wheel diameter.
- Inspect speed sensor alignment and ensure proper positioning and clearance between the sensor and magnet for accurate readings.
- Avoid riding in areas with strong electromagnetic interference or signal obstruction to prevent speedometer inaccuracies.
20. Headlight Malfunction on the Eunorau Defender S
Description of the problem: Some users may encounter issues with the headlight functionality on their Eunorau Defender S electric bike, such as flickering, dimming, or failure to illuminate.
Cause of the problem: Headlight malfunctions can be caused by electrical faults, loose connections, or bulb/battery issues.
Troubleshooting step-by-step:
- Inspect headlight wiring connections for any signs of damage, corrosion, or looseness, and repair or replace them as needed.
- Check headlight bulb condition and replace it if it’s burned out or damaged to restore proper illumination.
- If the problem persists, test the battery voltage output and charging system to ensure sufficient power supply to the headlight.
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21. Braking Noise Issue on the Eunorau Defender S
Description of the problem: Riders may experience unusual noises, such as squealing or grinding, while applying brakes on their Eunorau Defender S electric bike.
Cause of the problem: Braking noise issues can be caused by contaminated brake pads, misaligned brake calipers, or worn brake components.
Troubleshooting step-by-step:
- Inspect brake pads for any signs of contamination, such as oil or debris, and clean or replace them if necessary.
- Check brake calipers for proper alignment and adjust them as needed to ensure even contact with the brake rotor.
- Examine brake rotor surfaces for any signs of wear or damage, and replace them if necessary to eliminate noise issues.
22. Fork Seal Leakage Problem on the Eunorau Defender S
Description of the problem: Riders may notice oil leaks or fork seal leakage on the suspension forks of their Eunorau Defender S electric bike, affecting suspension performance.
Cause of the problem: Fork seal leakage can occur due to worn seals, damaged fork tubes, or excessive fork travel.
Troubleshooting step-by-step:
- Inspect fork seals for any signs of wear, tearing, or deterioration, and replace them if necessary to prevent oil leaks.
- Check fork tubes for scratches, nicks, or damage that may compromise seal integrity, and address any issues accordingly.
- Adjust fork travel settings according to the manufacturer’s recommendations to minimize seal wear and prevent leakage.
23. Loose Spokes Issue on the Eunorau Defender S
Description of the problem: Riders may encounter loose or broken spokes on the wheels of their Eunorau Defender S electric bike, leading to wheel wobbling or instability.
Cause of the problem: Loose spokes can result from inadequate tension, wheel misalignment, or spoke fatigue.
Troubleshooting step-by-step:
- Inspect wheel spokes for proper tension and adjust them using a spoke wrench to achieve uniform tension across all spokes.
- Check wheel alignment and trueness using a wheel truing stand or similar tool, and adjust spoke tension as needed to correct any deviations.
- Replace broken or damaged spokes and ensure proper wheel truing to restore wheel stability and prevent further spoke issues.
24. Display Language Setting Error on the Eunorau Defender S
Description of the problem: Some users may encounter difficulties in changing or resetting the display language settings on their Eunorau Defender S electric bike.
Cause of the problem: Display language setting errors can be caused by software bugs, firmware glitches, or user interface issues.
Troubleshooting step-by-step:
- Refer to the bike’s user manual or online documentation for instructions on how to access and modify display language settings.
- If available, perform a factory reset of the display unit to revert settings to default and resolve potential software-related issues.
- Contact Eunorau customer support for assistance with language setting adjustments or firmware/software updates if necessary.
25. Motor Overheating Problem on the Eunorau Defender S
Description of the problem: Riders may experience motor overheating issues on their Eunorau Defender S electric bike, resulting in reduced power output or motor failure.
Cause of the problem: Motor overheating can occur due to prolonged usage, high ambient temperatures, or inadequate cooling.
Troubleshooting step-by-step:
- Avoid prolonged periods of continuous motor operation and take breaks to allow the motor to cool down periodically during rides.
- Ride at moderate speeds and avoid steep inclines or heavy loads that can place excessive strain on the motor and increase heat generation.
- Check motor cooling vents for any obstructions or blockages, and ensure proper airflow to facilitate effective heat dissipation.
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Eunorau Defender S Electric Bike User Reviews
Positive Reviews from Eunorau Defender S Users
Many users have expressed satisfaction with various aspects of the Eunorau Defender S electric bike. Here are some of the positive experiences shared by Eunorau Defender S owners:
- Some users were satisfied with the powerful performance delivered by the dual suspension and dual motor setup, enabling them to conquer various terrains with ease.
- Several users appreciated the stability and strong grip provided by the fat tires, ensuring confident riding even on rough and uneven surfaces.
- Many riders praised the durability of the 6061 aluminum alloy frame, highlighting its ability to withstand rugged terrain and frequent use.
- Users found the 180mm hydraulic brakes to be highly effective in providing precise control and reliable stopping power, enhancing their overall riding experience.
- Several owners commended the long-lasting and dependable performance of the Samsung lithium-ion battery, allowing for extended rides without worrying about running out of power.
- Many riders appreciated the customizable riding experience offered by the five levels of pedal assist, allowing them to tailor the assistance to their preferred intensity.
- Users enjoyed the smooth and efficient gear shifting provided by the 9-speed Shimano alivio derailleur, contributing to a seamless and enjoyable ride.
- Owners were pleased with the variety of color options available for the Defender S, allowing them to choose a style that suits their personal preferences.
- Some users found the inclusion of different cog sizes to be beneficial, providing optimized performance for both uphill climbs and downhill descents.
Overall, positive feedback from Eunorau Defender S customers highlights its impressive performance, durability, versatility, and customization options, making it a popular choice among electric bike enthusiasts.
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Negative User Reviews of the Eunorau Defender S
Despite its many positive attributes, some users have reported certain drawbacks and issues with the Eunorau Defender S electric bike. Here are some of the summarized negative user reviews:
- Some users were not satisfied with the limitation of shorter rides due to the configuration of two motors and one battery on the Eunorau Defender S.
- Several riders expressed frustration with the LCD screen’s performance in bright sunlight, finding it difficult to read or navigate the display under such conditions.
- Some customers mentioned that although the Eunorau Defender S offers impressive features, they felt that there are cheaper alternatives available in the market offering similar functionality.
Overall, while there are some negative feedback and concerns raised by users regarding certain aspects of the Eunorau Defender S electric bike, the majority of users were satisfied with its performance, features, and overall value.
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Eunorau Defender S Manual
The operating instructions for the Eunorau Defender S electric bike can be found on the manufacturer’s website.
Conclusion
After exploring the various aspects of the Eunorau Defender S electric bike, it’s evident that this model offers a compelling combination of performance, features, and versatility.
In the “Common Problems and Troubleshooting” section, we discussed potential issues that users may encounter with the Defender S and provided troubleshooting steps to address them. Despite these challenges, it’s important to note that many users have reported positive experiences with the bike, highlighting its powerful dual motor, stable fat tires, and durable frame construction.
In the “User Reviews” section, we examined both positive and negative feedback from users. While some users expressed concerns about certain aspects such as battery configuration and LCD screen performance, the majority of users were satisfied with the bike’s overall performance and features.
Finally, we provided information about where to find the Eunorau Defender S operating instructions in the “Eunorau Defender S Manual” subsection. This ensures that users have access to important operating guidelines and safety information.
In conclusion, the Eunorau Defender S electric bike stands out as a reliable and versatile option for riders seeking a high-performance electric bike capable of handling various terrains and riding conditions. With its robust design, advanced features, and positive user feedback, the Defender S is a worthy choice for both casual riders and enthusiasts alike.
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Eunorau Defender S FAQ
What type of brakes does the Eunorau Defender S use?
The Eunorau Defender S is equipped with 180mm hydraulic disc brakes.
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What is the frame material of the Eunorau Defender S?
The frame of the Eunorau Defender S is handcrafted from 6061 aluminum alloy.
What colors is the Eunorau Defender S available in?
The Eunorau Defender S is available in three colors: forest cobra, gray, and black.
Does the Eunorau Defender S have a dual suspension system?
Yes, the Eunorau Defender S comes with a dual suspension system.
Can the battery of the Eunorau Defender S be removed for charging?
Yes, the battery is removable and can be easily taken out with a twist of the key for charging.
How many levels of pedal assist does the Eunorau Defender S have?
The Eunorau Defender S offers five levels of pedal assist.
What is the maximum range of the Eunorau Defender S on a single charge?
The bike has a maximum range of up to 130 kilometers on a single charge.
What type of tires does the Eunorau Defender S come with?
The bike comes with fat tires that provide a stable and strong grip.
What is the battery specification of the Eunorau Defender S?
The bike uses a Samsung lithium-ion battery for power.
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