Written By Doug Smirnoff

BESV JTR 1.1 Common Problems and Troubleshooting

Welcome to our comprehensive guide on addressing common issues and troubleshooting your BESV JTR 1.1 Electric Bike. The BESV JTR 1.1 is our premium lightweight commuter bike, meticulously designed to enhance your daily commute and sporty riding experience with unmatched agility and efficiency.

Are you the proud owner of a BESV JTR 1.1 Electric Bike? If so, you’ve made a smart choice! This article is tailored specifically for riders like you who appreciate the exceptional features of the JTR 1.1, including its outstanding lighting system, convenient luggage rack, versatile 10-speed gears, powerful rear motor, and the integrated 360 Wh battery that keeps you going.

Whether you’re new to electric bikes or have been enjoying the benefits of your JTR 1.1 for a while, this guide will assist you in resolving common issues that may arise during your rides. Choose the JTR 1.1, and you won’t regret it – now let’s ensure your riding experience remains smooth and trouble-free!

BESV JTR 1.1 Overview

The BESV JTR 1.1 is our premium lightweight commuter bike, ideal for your daily commute and sporty riding with a focus on agility. With this bike, you’ll effortlessly navigate through the city. The JTR 1.1 features excellent lighting, a luggage rack, 10-speed gears, a powerful rear motor, and an integrated 360 Wh battery. Choose the JTR 1.1, and you won’t regret it!

Here’s an overview of the BESV JTR 1.1 based on product details, specifications, and features:

FRAMEBESV alloy frame with built-in 360W Darfon battery, for Bafang rear hub motor
COLOR(s)Bright ceramic green with dark ceramic green
SIZESS (45.5cm) | M (49cm) | L (51cm) | XL (53cm)

Product Details and Features

  • Bafang rear hub motor, 250W rated power, 40Nm of torque, 25km/h maximum assist
  • 360Wh Intube battery, compatible with range extender, with Smart 2A charger
  • Darfon display with Bluetooth connectivity
  • Shimano Deore RD-M4120, 10-speed rear derailleur
  • Shimano Deore CS-M5010, 10-speed cassette (11-42T)
  • KMC e10Turbo chain with Quick-Link

Causes of Common Problems with the BESV JTR 1.1

1. Battery Not Charging

  • Description of the Problem: The BESV JTR 1.1 battery is not charging, and the bike won’t power up.
  • Cause of the Problem: This issue can occur due to a faulty charger, a loose connection, or a depleted battery.
  • Troubleshooting:
    1. Check the charger’s connections, ensuring it’s securely plugged into the bike’s charging port and a power outlet.
    2. Inspect the charger for any visible damage or wear. Replace it if necessary.
    3. If the battery is completely depleted, leave it connected to the charger for several hours to allow it to charge fully.
    4. If the problem persists, contact BESV customer support for further assistance.

2. Inconsistent Motor Assistance

  • Description of the Problem: The motor on the BESV JTR 1.1 provides inconsistent assistance or stops unexpectedly.
  • Cause of the Problem: Irregular motor performance can result from issues with the sensor, wiring, or motor itself.
  • Troubleshooting:
    1. Check the wiring connections between the motor and the controller. Ensure they are securely attached.
    2. Clean the cadence and torque sensors to ensure accurate data transmission.
    3. Inspect the motor for visible damage or overheating. If there are any concerns, contact a professional technician for a diagnosis.
    4. If the issue persists, consider resetting the electric system to factory settings as described in the user manual.

3. Gears Not Shifting Smoothly

  • Description of the Problem: Difficulty shifting gears smoothly on the BESV JTR 1.1.
  • Cause of the Problem: Gear shifting problems can be due to cable tension, derailleur alignment, or worn-out components.
  • Troubleshooting:
    1. Inspect the gear cables for signs of fraying or damage. Replace if needed.
    2. Adjust the cable tension using the barrel adjuster on the derailleur or handlebar shifter to achieve smoother shifting.
    3. Ensure the derailleur hanger is properly aligned with the rear dropout, as misalignment can affect shifting performance.
    4. If the problem persists, consider having a professional bike mechanic perform a thorough inspection and tune-up.

4. Display Connectivity Issues

  • Description of the Problem: The Darfon display on the BESV JTR 1.1 experiences connectivity problems or fails to display information.
  • Cause of the Problem: Connectivity issues can occur due to interference, low battery, or software glitches.
  • Troubleshooting:
    1. Ensure that the display’s battery is adequately charged. Charge it if necessary.
    2. Check for wireless interference sources like other electronic devices and move away from them.
    3. If the display is unresponsive, try rebooting it by turning it off and on again.
    4. If problems persist, refer to the user manual for troubleshooting specific to the Darfon display or contact BESV support.

5. Brake Squeaking or Grinding

  • Description of the Problem: The brakes on the BESV JTR 1.1 emit squeaking or grinding noises during braking.
  • Cause of the Problem: Noisy brakes can result from contamination, worn brake pads, or misalignment.
  • Troubleshooting:
    1. Inspect the brake pads for wear and replace them if they are worn down or contaminated with debris.
    2. Clean the brake rotors and pads with isopropyl alcohol to remove any contaminants.
    3. Check the brake caliper alignment to ensure it’s centered over the rotor for even pressure distribution.
    4. If noise persists, consider lightly sanding the brake pads’ surface to remove glaze.

6. Uneven Tire Pressure

  • Description of the Problem: The tires on your BESV JTR 1.1 have uneven pressure, affecting the ride quality.
  • Cause of the Problem: Uneven tire pressure can occur due to slow leaks, valve issues, or inconsistent inflation.
  • Troubleshooting:
    1. Inspect both tires for visible punctures or damage and repair them if necessary.
    2. Check the valve stems for proper seating and tighten them securely to prevent air loss.
    3. Use a reliable pressure gauge to ensure both tires are inflated to the recommended PSI as specified in the user manual.
    4. Consider using a sealant in your tubes or tires to prevent future slow leaks.

7. Pedal Assembly Loose

  • Description of the Problem: The pedals on your BESV JTR 1.1 feel loose or wobbly while riding.
  • Cause of the Problem: A loose pedal assembly can result from improper installation, worn pedal threads, or damaged crank arms.
  • Troubleshooting:
    1. Check the pedal threads and crank arms for any visible damage or wear. Replace any components as needed.
    2. Tighten the pedals securely using a pedal wrench, ensuring they are threaded in the correct direction (right pedal clockwise, left pedal counterclockwise).
    3. If the problem persists, consider using threadlocker on the pedal threads to prevent future loosening.
    4. Inspect the crank arms and ensure they are properly seated and tightened on the bottom bracket.

8. Chain Slippage

  • Description of the Problem: The chain on your BESV JTR 1.1 slips or skips gears during gear shifts.
  • Cause of the Problem: Chain slippage can occur due to a worn chain, misadjusted derailleur, or damaged cassette.
  • Troubleshooting:
    1. Inspect the chain for wear and replace it if it shows signs of stretching or damage.
    2. Ensure the derailleur is properly adjusted, and the indexing matches the gear shifters’ settings.
    3. Examine the cassette for damaged teeth or excessive wear and replace it if necessary.
    4. Lubricate the chain regularly and ensure it is properly tensioned to prevent future slippage.

9. Loose or Noisy Handlebars

  • Description of the Problem: The handlebars on your BESV JTR 1.1 feel loose or produce unusual noises while turning.
  • Cause of the Problem: Loose or noisy handlebars can result from loose stem bolts, headset issues, or worn bearings.
  • Troubleshooting:
    1. Inspect the stem bolts for proper torque and tighten them as needed to secure the handlebars.
    2. Check the headset for play or roughness. Adjust or replace headset components as necessary.
    3. Lubricate the headset bearings and ensure they are functioning smoothly.
    4. If the problem persists, have a bike mechanic inspect the handlebar assembly for any underlying issues.

10. Excessive Brake Wear

  • Description of the Problem: The brake pads on your BESV JTR 1.1 wear out quickly, requiring frequent replacement.
  • Cause of the Problem: Excessive brake wear can occur due to aggressive riding, contaminated pads, or misaligned brake calipers.
  • Troubleshooting:
    1. Adjust your riding style to avoid harsh braking, which can accelerate brake pad wear.
    2. Regularly inspect and clean the brake pads and rotors to remove any debris or contaminants.
    3. Check the brake caliper alignment and adjust if necessary to ensure even pad wear.
    4. Consider upgrading to high-quality brake pads for longer-lasting performance.

11. Rattling or Loose Accessories

  • Description of the Problem: You notice rattling or loose accessories like the fenders, rack, or water bottle holder while riding your BESV JTR 1.1.
  • Cause of the Problem: Loose accessories can result from vibrations during riding or improper installation.
  • Troubleshooting:
    1. Check all accessory attachment points and bolts for tightness. Re-tighten any loose components.
    2. Consider using threadlocker on accessory attachment bolts to prevent them from loosening due to vibrations.
    3. Inspect the accessories themselves for any damage or signs of wear and replace them if needed.
    4. If the rattling persists, consider using rubber or foam padding between the accessory and the frame to dampen vibrations.

12. Display Error Codes

  • Description of the Problem: The Darfon display on your BESV JTR 1.1 shows error codes or malfunctions.
  • Cause of the Problem: Display error codes can be triggered by various issues, including sensor problems, electrical issues, or software glitches.
  • Troubleshooting:
    1. Refer to the user manual to identify the specific error code and its meaning.
    2. Perform a system reset by turning off the display and then turning it back on.
    3. Check all cable connections and ensure they are securely plugged in.
    4. If the error persists, contact BESV customer support for further assistance or guidance.

13. Sudden Loss of Power

  • Description of the Problem: Your BESV JTR 1.1 experiences a sudden loss of power while riding, and the motor cuts out unexpectedly.
  • Cause of the Problem: Sudden power loss can result from issues such as a drained battery, overheating, or electrical faults.
  • Troubleshooting:
    1. Check the battery level indicator on the display to ensure the battery is not depleted.
    2. Allow the bike to cool down if it has been subjected to prolonged or intense use to prevent overheating.
    3. Inspect all electrical connections and wiring for loose or damaged components.
    4. If the issue persists, consider having a professional technician diagnose and repair the electrical system.

14. Unresponsive Brakes

  • Description of the Problem: The brakes on your BESV JTR 1.1 become unresponsive or require excessive force to engage.
  • Cause of the Problem: Unresponsive brakes can be caused by air in the brake lines, contaminated brake fluid, or worn brake pads.
  • Troubleshooting:
    1. Bleed the brake lines to remove any air bubbles and ensure proper brake fluid circulation.
    2. Inspect the brake fluid for contamination or moisture, and replace it if necessary.
    3. Check the brake pads for wear and replace them if they are worn down or contaminated.
    4. If the problem persists, have a bike mechanic inspect the brake calipers and hydraulic system for any issues.

15. Range Decrease in Cold Weather

  • Description of the Problem: You notice a decrease in the range of your BESV JTR 1.1’s battery when riding in cold weather.
  • Cause of the Problem: Cold temperatures can affect battery performance and reduce its capacity temporarily.
  • Troubleshooting:
    1. Keep the battery at room temperature before riding to minimize the impact of cold weather.
    2. Plan your routes accordingly, accounting for reduced battery capacity in cold conditions.
    3. Consider using an insulated battery cover or pouch to help maintain a more stable temperature for the battery.
    4. If you experience persistent issues, contact BESV customer support for guidance on cold weather riding tips.

16. Excessive Chain Noise

  • Description of the Problem: The chain on your BESV JTR 1.1 generates excessive noise while pedaling.
  • Cause of the Problem: Chain noise can be caused by poor lubrication, misalignment, or debris buildup.
  • Troubleshooting:
    1. Apply a suitable chain lubricant to ensure proper chain movement and reduce noise.
    2. Check for chain misalignment and adjust the derailleur to align the chain with the gear sprockets.
    3. Clean the chain and cassette to remove any dirt or debris that may be contributing to the noise.
    4. If the noise persists, inspect the chain for wear or damaged links and replace it if necessary.

17. Loose Spokes

  • Description of the Problem: You notice loose or wobbly spokes on the wheels of your BESV JTR 1.1.
  • Cause of the Problem: Loose spokes can result from inadequate wheel truing, impact damage, or spoke fatigue.
  • Troubleshooting:
    1. Use a spoke wrench to tighten loose spokes gradually and evenly, ensuring the wheel remains true.
    2. Inspect the spokes for any visible damage or signs of fatigue, and replace damaged spokes as needed.
    3. Consider having a professional wheel truing performed to ensure the wheels are properly tensioned and aligned.
    4. Check the wheel rims for damage or warping that may contribute to spoke issues.

18. Unusual Motor Sounds

  • Description of the Problem: The motor on your BESV JTR 1.1 produces unusual sounds during operation.
  • Cause of the Problem: Unusual motor sounds can be due to loose components, foreign objects, or motor issues.
  • Troubleshooting:
    1. Inspect the motor area for loose screws, nuts, or bolts, and tighten them as necessary.
    2. Check for any foreign objects or debris that may be stuck in the motor housing, and remove them carefully.
    3. If the motor noise persists, consider having a professional technician diagnose and repair any motor-related issues.
    4. Regularly clean and maintain the motor to prevent debris accumulation and reduce noise.

19. Uncomfortable Saddle

  • Description of the Problem: The saddle on your BESV JTR 1.1 causes discomfort or numbness during rides.
  • Cause of the Problem: Saddle discomfort can result from improper saddle height, design, or personal fit preferences.
  • Troubleshooting:
    1. Adjust the saddle height to ensure it aligns with your leg length and riding position.
    2. Consider trying a different saddle with a design that better suits your anatomical needs.
    3. Use padded cycling shorts or a seat cover to provide additional comfort during rides.
    4. If discomfort persists, consult with a professional bike fitter to find a saddle that suits your body type and riding style.

20. Wheel Misalignment

  • Description of the Problem: The wheels on your BESV JTR 1.1 appear misaligned, affecting the bike’s stability.
  • Cause of the Problem: Wheel misalignment can occur due to improper installation, axle issues, or frame damage.
  • Troubleshooting:
    1. Inspect the wheel axles to ensure they are properly seated in the dropouts and tightened securely.
    2. Check for visible frame damage or misalignment that may be affecting the wheel positioning.
    3. If necessary, have a professional bike mechanic assess the frame and wheel alignment for proper adjustment.
    4. Regularly maintain the bike’s components to prevent misalignment issues from occurring.

21. Unresponsive Throttle

  • Description of the Problem: The throttle on your BESV JTR 1.1 does not respond when you engage it.
  • Cause of the Problem: Unresponsiveness of the throttle can be due to electrical issues, loose connections, or throttle component faults.
  • Troubleshooting:
    1. Check the throttle cable and connections for any visible damage, and ensure they are securely connected.
    2. Inspect the throttle grip for any wear or damage, and replace it if needed.
    3. Verify that the electrical wiring associated with the throttle is intact and properly connected.
    4. If the throttle remains unresponsive, consult with a professional technician to diagnose and repair the issue.

22. Intermittent Power Cuts

  • Description of the Problem: Your BESV JTR 1.1 experiences intermittent power cuts during rides, causing sudden loss of motor assistance.
  • Cause of the Problem: Intermittent power cuts can result from loose electrical connections, battery issues, or controller malfunctions.
  • Troubleshooting:
    1. Inspect all electrical connections, including the battery and motor connections, to ensure they are securely fastened.
    2. Check the battery charge level and ensure it is adequately charged before each ride.
    3. If the problem persists, contact BESV customer support for a comprehensive diagnosis and potential controller or electrical component replacement.
    4. Consider using a surge protector or voltage stabilizer for the charging process to mitigate power-related issues.

23. Unstable Handlebar Stem

  • Description of the Problem: The handlebar stem of your BESV JTR 1.1 feels unstable or wobbles while riding.
  • Cause of the Problem: An unstable handlebar stem can occur due to loose bolts, improper assembly, or worn components.
  • Troubleshooting:
    1. Check the stem bolts and handlebar attachment for proper torque and tighten them as needed to secure the stem.
    2. Ensure that the stem assembly is correctly installed and aligned with the fork steerer tube.
    3. Inspect the stem and headset bearings for any signs of wear or damage and replace them if required.
    4. If instability continues, consult with a bike mechanic to assess and address the issue.

24. Brake Squealing

  • Description of the Problem: The brakes on your BESV JTR 1.1 emit a high-pitched squealing sound when engaged.
  • Cause of the Problem: Brake squealing can result from contamination, misalignment, or worn brake pads.
  • Troubleshooting:
    1. Examine the brake pads for contamination or glazing, and clean or replace them if necessary.
    2. Check the brake rotor for any visible damage or warping that may cause noise, and replace it if needed.
    3. Inspect the brake calipers for proper alignment and adjust them if they are not centered over the rotor.
    4. If the squealing persists, consider using disc brake-specific brake quiet or anti-squeal compound.

25. Inaccurate Battery Level Indicator

  • Description of the Problem: The battery level indicator on your BESV JTR 1.1 does not accurately reflect the remaining battery charge.
  • Cause of the Problem: Inaccurate battery level readings can occur due to sensor malfunctions, software glitches, or battery degradation.
  • Troubleshooting:
    1. Reset the battery level indicator by turning the bike off and then on again.
    2. Ensure that the battery contacts and connectors are clean and securely connected.
    3. Charge the battery fully and then use it to see if the indicator displays a more accurate reading.
    4. If the issue persists, consider updating the bike’s firmware or contacting BESV customer support for assistance.

BESV JTR 1.1 Electric Bike User Reviews

Positive Reviews from BESV JTR 1.1 Electric Bike Users

When exploring user feedback for the BESV JTR 1.1 Electric Bike, we found that many users expressed satisfaction with various aspects of this electric bike. Here are some of the positive experiences associated with the BESV JTR 1.1 as reported by customers:

  • Smooth and Efficient Commuting: Some users were satisfied with the BESV JTR 1.1’s smooth and efficient performance during their daily commutes, making it an excellent choice for urban transportation.
  • Agility and Maneuverability: Many riders praised the bike’s agility, allowing them to navigate through city traffic with ease, thanks to its lightweight design and responsive handling.
  • Powerful Motor: Several users appreciated the powerful rear hub motor, providing ample assistance for conquering hills and maintaining speed.
  • Long Battery Life: Customers reported that the integrated 360 Wh battery offered sufficient range for their daily rides, and some even mentioned the option to use a range extender for extended trips.
  • Quality Build: Positive comments were made about the overall build quality of the BESV JTR 1.1, highlighting features like the durable alloy frame and comfortable saddle.

These positive reviews collectively indicate that the BESV JTR 1.1 Electric Bike has garnered praise for its performance, agility, and quality, making it a well-received choice among users.

Negative User Reviews of the BESV JTR 1.1 Electric Bike

While many users had positive experiences with the BESV JTR 1.1 Electric Bike, it’s important to acknowledge some of the negative feedback from customers. Based on reviews available on the Internet, here are common issues that users have encountered:

  • Battery Range Limitations: Some users expressed disappointment with the bike’s battery range, particularly when riding in hilly terrain, stating that it did not meet their expectations for longer journeys.
  • Motor Noise: A few customers mentioned that the motor produced more noise than they anticipated, which could be distracting during quiet rides.
  • Component Wear: Several users reported premature wear and tear on components like brake pads and tires, leading to the need for frequent replacements.
  • Price Point: Some individuals found the BESV JTR 1.1 to be on the higher end in terms of price, leading to concerns about its overall value.
  • Minor Assembly Challenges: A handful of users faced minor challenges during the assembly process, citing the need for better instructions.

It’s worth noting that negative feedback, while present, appears to be relatively limited in comparison to positive reviews. These issues may vary based on individual preferences and usage scenarios.

Based on reviews sourced from Walmart.com, the majority of users expressed satisfaction with their BESV JTR 1.1 Electric Bike. While some encountered minor issues related to battery range and component wear, the bike’s overall performance, agility, and build quality received commendation. As with any product, individual experiences may vary, but the positive feedback suggests that the BESV JTR 1.1 is well-received among its user base.

BESV JTR 1.1 Electric Bike Manual

The operating instructions and user manual for the BESV JTR 1.1 Electric Bike can be found on the manufacturer’s official website. For detailed information on assembly, maintenance, and usage guidelines, please visit the manufacturer’s website and refer to the official manual provided by BESV.

BESV JTR 1.1 Frequently Asked Questions

Q1: How can I extend the battery range of my BESV JTR 1.1 Electric Bike?

A1: To extend the battery range of your BESV JTR 1.1, you can consider purchasing a range extender compatible with the 360Wh Intube battery. Additionally, maintaining proper tire pressure, avoiding excessive throttle use, and pedaling along with electric assistance can help optimize your battery’s range.

Q2: What should I do if my BESV JTR 1.1 experiences a sudden loss of power?

A2: If your BESV JTR 1.1 encounters a sudden loss of power, check the battery level indicator on the display to ensure the battery is not depleted. Allow the bike to cool down if it has been subjected to prolonged use. Inspect all electrical connections and wiring for loose or damaged components. If the issue persists, consider consulting a professional technician for further diagnosis.

Q3: How do I address brake squealing on my BESV JTR 1.1?

A3: If your BESV JTR 1.1’s brakes are squealing, you can start by examining the brake pads for contamination or glazing and clean or replace them if needed. Check the brake rotor for damage or warping and replace it if necessary. Inspect the brake calipers for proper alignment and adjust them to center over the rotor. Consider using disc brake-specific brake quiet or anti-squeal compound if the noise persists.

Q4: Is the BESV JTR 1.1 Electric Bike suitable for hilly terrain?

A4: Yes, the BESV JTR 1.1 is equipped with a powerful Bafang rear hub motor with 250W rated power and 40Nm of torque, making it suitable for hilly terrain. It provides the necessary assistance to conquer inclines with ease.

Q5: Can I adjust the saddle height on the BESV JTR 1.1 Electric Bike?

A5: Yes, you can adjust the saddle height on the BESV JTR 1.1 Electric Bike to suit your riding comfort. Proper saddle height alignment is essential for an ergonomic riding position. Follow the instructions provided in the user manual to make the necessary adjustments.

Conclusion

When encountering issues with your BESV JTR 1.1 Electric Bike, it’s advisable to refer to the user manual, reach out to customer service, or contact an authorized service center for assistance. Proper maintenance and following the manufacturer’s guidelines can help ensure a smooth riding experience with your BESV JTR 1.1 Electric Bike.

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