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MaintenanceTips & Cycling Knowledge
Handling Error Codes
1. Error Code E034: Throttle Fault
If your electric bike screen says E034, it means there's somethirng funky with the throttle.
why does it occur
Usually, it's either the throttle sensor acting up or it's not hookeed up rightLots of things can cause this, like hiccups during manufacturingor damagefrom a rough ride.
Troubleshooting
Here's what you can try
1. Throttle Sensor Wire Connection Error
Check the throttle sensor wire. Unplug it, then plug it back inIf the E034message disappears, it was probably just a bad connection. Easy fix, just makesure everything's snug.
2. Throttle Damage
If the E034 message sticks around even after you've checkedthe wire, it'slikely the throttle itself is busted. No worries, though! Just reach out to ourcustomer service team, and we'll send you a new throttle.
Please do the test according to the video
2. Error Code E037: Brake Abnormality
If you see error code E037 on the display screen, it indicates a brake abnormality.
Why does it occur
A common cause of this problem is a bad brake sensor cable connection, partly due to a faulty display.
Which cables are the brake sensor ones
The yellow labeled ones as shown in the picture below are the brake sensor cables, one on the left and one on the right.
Troubleshooting
1.Bad brake sensor cable connection
1.1Which sensor works unwell
Reconnect the left and right sense cable separately until the E37 code disappears（For example, if E37 disappears after disconnecting the left side the trouble point is on the left side.）
1.2.How to fix it
Remove the lever firstly and unscrew the ① fixing screw, then tighten or loosen the ②nut shown below until the E37 code disappear.
If you unplug the brake cables on both sides at the same time and the screen does not display E037, there is a problem with the brakes on both sides and need to be replaced.
2.Display fault
If both sides are unplugged at the same time and the display still displays E037, it means there is a problem with the display, You need to reset the display. You can reset the display by following these steps:
Long-press the "+" and "-" buttons to enter the display settings. Then, short-press the power button until you reach the P16 setting.
Long-press the "-" button for 5 seconds to restore the factory settings.
Once you've made the adjustments, long-press the "+" and "-" buttons again to save the changes.
If the display still displays E037 after resetting, then need to replace the display.
Please do the test according to the video
PS: If the problem persists, please contact the customer service team.
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MaintenanceTips & Cycling Knowledge
How to Replace Brake Pads
Brake pads on all electric bicycles are consumable parts that gradually wear down with long-term use. When worn to a certain extent, they can affect braking performance and even pose a safety hazard.Inspecting and replacing brake pads is crucial for every rider, as it directly impacts riding safety. This article will provide detailed guidance on the specific procedures for brake pad inspection and replacement.
Preparation for Inspection and Replacement
Brake pad replacement
Allen wrench
Needle-nose pliers
Disc brake pads wear down over time due to normal use. This can cause a slower brake response time and require more effort to press the brakes.
A squeaking noise from disc brakes is usually caused by contaminated brake pads. Even the slightest amount of oil, including from your skin, can damage disc brake pads. Minimize contact between the brake surface and bare skin whenever handling brake pads. If you do touch the pads, clean them with rubbing alcohol or a specialized product for disc brake pads. Then lightly sand the pads.
Brake Pad Inspection
Check your brake pads for shininess or visible wear. Inspect the pads by removing the wheel and examining the space where the rotor spins.
When inspecting brake pads, pay attention to the following key points:
Integrity: Ensure there are no chunks, dents, or missing parts. If there are, replace the damaged pads before your next ride.
Thickness: The pad material should be at least 1.5 mm thick. If you don't have a ruler, note that a grain of rice is about 1.5 mm thick (width, not length). If the pad is thinner than this, it’s time to replace it.
Cleanliness: The pads should be free of oil and other contaminants. If the pads are dirty, especially if they are oily (a significant safety hazard!), they need to be replaced.
Replace brake pads
Please refer to the Youtube video to install！
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MaintenanceTips & Cycling Knowledge
Ultimate Guide to Silencing Your Electric Bike's Noises
Many times, we find ourselves puzzled by squeaks or unexpected noises coming from our newly assembled or regularly used electric bicycles. These noises often stem from improper assembly or wear and tear of components over time, indicating potential issues. Addressing these problems early can prevent them from worsening in the future. If your electric bike starts making noises, it’s crucial to stop and check it before continuing your ride.
Why is my electric bike making strange noises?
Identifying the source of the squeaking is crucial. Here’s how you can diagnose and fix it, as there are many parts on a bike that can produce noise. Once you pinpoint the source, refer to the relevant component below.
Brakes
The contact between the wheel and the brake pads often causes squeaks. First, check if your wheels are properly secured in the dropouts, where the wheel axles attach to the bike frame. Misalignment can cause the wheel to rub against the brake pads. Remove the wheel, tighten the quick-release skewer, and securely fix it in the dropouts.
Chain
A squeaky chain is likely dry and in need of thorough cleaning and lubrication.
Crankset
If the crankset is the source of the noise, loose bolts might be the culprit. Grab the crank arms (the parts connecting the pedals to the bike) and twist them to see if they move side to side. If they do, tighten them using the appropriately sized hex wrench.
Derailleur
Dry pulleys can often cause the derailleur to squeak. Clean them thoroughly with a dry cloth, then apply a drop of lubricant to each pulley’s axle. Also, lubricate the derailleur’s pivots by turning the pedals.
Pedals
A common question is why the bike makes noise when pedaling. The pedals themselves might be the issue. Check if they are tightened securely or if the pedal threads are damaged. If the threads are damaged and you can’t tighten the pedals, replace them promptly.
Saddle
The rails connecting the saddle to the seat post can also be a source of squeaks. Tighten the bolts securing the saddle using an appropriately sized hex wrench. If the saddle tilts and squeaks, consider taking it to a nearby bike shop.
How to Fix Squeaky Bike Brakes?
Fixing noisy brakes on an electric bike is straightforward. Follow these steps to silence your brakes
Check the Brakes
It’s easy to determine if the front or rear brakes are at fault. During a ride, test the brakes individually. If the front brake is noisy, the sound will come from the left side. If the rear brake is noisy, the sound will come from the right side. If both brakes make noise, adjust both front and rear brakes.
Clean the Rotors
If possible, use rubbing alcohol to clean the disc brake rotors and wipe them with a clean cloth or towel. Clean the brake pads with a degreaser if they are still thick; if they are thin, replace them. After cleaning the brake pads, wait for them to dry completely before reassembling.
Replace Brake Pads
Replacing the brake pads follows the same steps for both the front and rear wheels. If your bike’s brakes are squealing when applied, the brake pads are likely worn out. Worn brake pads can’t grip properly and cause squealing, reducing braking efficiency.
Summary
These solutions will help you fix the squeaking noises on your electric bike, ensuring a smoother and more enjoyable ride. Regular maintenance and timely addressing of any noises can extend the life of your bike and make your rides more pleasant. With summer around the corner, hop on your perfect KINGBULL electric bike and explore the secrets of the summer forest!
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Tips & Cycling Knowledge
Recommendation of 3 Leisure Cycling Routes in Atlanta
In cities like Atlanta, there are plenty of cycling routes perfect for leisurely weekend rides. Here are 3 recommended routes, 2 of which are away from the city, suitable for nature-loving cyclists. The last one is the classic BeltLine loop route, allowing you to fully enjoy the city's scenery and community ambiance.
Regardless of which route you choose, remember to check the weather and ensure you have your safety gear in place, ensuring you can enjoy your weekend cycling trip safely and happily.
Brookhaven Route:
Although not within the city limits of Atlanta, it is one of the most popular short cycling routes in the Atlanta area. Brookhaven is a city located in the northeast suburbs of Atlanta. You can start from Country Club Lake, heading north through various neighborhoods and Oglethorpe University, or head west passing Chastain Park and golf courses. The entire route is 21 miles long, passing through beautiful suburban scenery and rural landscapes, perfect for those seeking a peaceful ride.
Route Data:
Surfaces: 99% Paved · 1% Unpaved (Paved surfaces include asphalt, concrete, and chip seal.)
Length: 21.3 miles
Elevation Gain: 1448ft
Max & Min Grade: 5.7% / -7%
Fish Fry Route:
Located just 17 miles from downtown Atlanta, it is one of the best fish fry routes around Atlanta. The route passes through Wilkerson Mill-Farris Park, Hutcheson's Ferry Park, and Chattahoochee Hills.
Route Data:
Surfaces: 100% Paved (Paved surfaces include asphalt, concrete, and chip seal.)
Length: 30 miles
Elevation Gain: 1391ft
Max & Min Grade: 4.9% / -5.4%
BeltLine Route:
Atlanta's BeltLine is a leisure path encircling the city, offering approximately 18.7 miles of cycling route. This route extends through various communities in the city, with beautiful landscapes, art installations, and dining spots along the way. You can spend a whole day cycling on the BeltLine, enjoying the city's scenery and community atmosphere.
Route Data:
Surfaces: 68% Paved · 32% Unpaved (Paved surfaces include asphalt, concrete, and chip seal.)
Length: 18.7 miles
Elevation Gain: 856ft
Max & Min Grade: 6.1% / -8%
Preparing for a Cycling Route: Tips for a Safe and Enjoyable Ride
Before embarking on your cycling adventure, it's essential to take some preparatory steps to ensure a smooth and enjoyable ride, especially if you're riding an electric bike (e-bike). Here are some helpful tips to consider:1. **Prepare Your Kingbull:**
Before hitting the road, it's crucial to check the functionality of all parts of your electric bike. Regular maintenance helps reduce the risk of mechanical problems while riding. Ensure your brakes and moving parts are clean and in good condition. This routine check ensures your e-bike is ready for the journey ahead.2. **Choose the Right Gear:**The gear you wear depends on the riding conditions you'll encounter. For early morning or evening rides, reflective gear and lighting are essential for visibility. If you're tackling rough terrain, wearing a helmet and safety pads can provide added protection. Check the weather forecast to dress appropriately and stay comfortable throughout your ride.3. **Plan Your Route:**Whether you're exploring rural trails or urban bike lanes, knowing your route beforehand is beneficial. Fat tire e-bikes offer extra power for rough terrains, but understanding potential challenges helps you ride safely. Familiarize yourself with bike lanes and traffic patterns. Test your route on different days to gauge traffic flow and potential hazards.4. **Know E-Bike Laws:**Familiarize yourself with local e-bike laws to avoid legal issues. E-bikes are often classified differently from traditional bicycles, with specific regulations regarding where they can be ridden and required equipment. Research regulations regarding speed limits, power restrictions, and licensing requirements to ensure compliance.
Tips to Keep You Going:
- **Maintain Battery Life:**Avoid draining your battery completely to prevent damage. Recharge your battery after each ride to ensure it's ready for your next adventure. Starting with a fully charged battery maximizes your enjoyment and safety on the road.
- **Check Tire Pressure:**Regularly check tire pressure to avoid flat tires during your ride. Establish a routine for air pressure checks to ensure optimal performance.- **Utilize Pedal Assist:**Take advantage of pedal assist features on your e-bike for a smoother ride. Conveniently located controls on the handlebars allow you to adjust speed levels effortlessly while cycling.
In Conclusion:
Before setting off on your cycling journey, thoroughly inspect your e-bike and familiarize yourself with your route and local regulations. With proper preparation and adherence to safety guidelines, along with the reliable performance of a Kingbull Rover Fat Tire Electric Bike, you'll cover distances effortlessly and enjoy memorable experiences in stunning destinations across the country.
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Tips & Cycling Knowledge
Pre-Ride Safety Checklist for All Electric bike Users
Everyone who receives a new electric bike is eager to assemble it and hit the road for an exhilarating ride. However, just like how drivers should make it a habit to check their rearview mirrors and fasten their seat belts before hitting the road, inspecting your electric bike before riding is crucial for every rider. While there is significant overlap between safety checks for electric bikes and regular bicycles, there are some additional considerations specific to electric bikes. So, buckle up and review our checklist! While you can't predict everything that might happen while riding, a quick check of your electric bike before departure can better ensure you don't encounter any unexpected issues.
Check Basic Equipment of the Electric Bike
1.Check the Frame and Screws. The frame is a vital component of an electric bike, and a sturdy frame ensures safe riding. Before riding, it's recommended to inspect the entire frame for any deformities, and ensure that screws on the rear frame and pedal are tightened to prevent any parts from falling off during the ride.
2.Check Wiring. Ensure that all wiring is correctly connected and functioning properly.
3.Check Front Suspension. Ensure that the front suspension is in the open position.
4.Check the Chain. Inspect the chain and gears for any damage or breakage, and ensure that your chain is properly placed on the derailleur. If you ride frequently, especially in harsh weather conditions or on dusty roads, it's advisable to clean the chain about once every 1-2 weeks. Cleaning the chain helps extend the life of both the chain and gears, ensuring smooth and safe riding.
5.Check the Tires. Properly inflated tires are crucial for smooth riding. They not only make your journey more comfortable but also reduce the risk of tire punctures due to under-inflation. You can check the sidewall of the tires to find the recommended tire pressure and inflate them to that level. Additionally, inspect the tire surface for any cracks or signs of wear. If there are any cracks, do not ride the bike until the tires are replaced. Over time, natural vibrations from riding on the road can loosen quick-release bolts, so we strongly recommend checking this component before each ride.
6.Check the Handlebars and Seatpost. The position of the handlebars and seatpost determines your comfort while riding. Ensure that the handlebars are adjusted to a comfortable angle and securely tightened to the stem. Additionally, if you find the seatpost slipping, fully tighten the quick-release lever onto the seatpost.
7.Check the Headlight & Taillight. Lights are essential indicators of your riding status for pedestrians and other vehicles on the road. Before riding, ensure that the lights are functioning properly.Depending on the model of Kingbull electric bike, there may be slight differences in how the lights are operated：
Voyager: Long press "+", the headlight turns on or off, and taillight are operated by the red button for left/right indication.
Rover: Long press "+", the headlight/taillight turns on or off.
Literider: The light button at the handlebar turns the headlight on or off and the tail light comes on automatically when the brakes are applied.
Discover / Discover ST:Long press the "+" button to turn on or off headlights and tail lights.
Hunter:The light button at the handlebar turns the headlight on or off and the tail light comes on automatically when the brakes are applied.
8.Ensure You Have a Helmet. We don't want to sound like your mom, but you can't ride a bike without wearing a helmet. Helmets aren't "cool," but you know what's even less cool? Head injuries. Before riding any bike, be sure to wear your helmet properly and check the helmet straps to ensure they are securely fastened to your head.
Check Electric Bike System Equipment
1.Check the Battery. The most crucial part of an electric bike is its power source. Open the right rubber cover and adjust the red button to "I", "I" indicates that the battery is supplying power normally. Press and hold the button on the front of the battery to check the battery level. The fun of an electric bike comes from the motor, so before rolling it out of the garage, ensure that the battery is fully charged.
2.Check Pedal Assist. After turning on the power, adjust the pedal assist through "+/-". The pedal assist has 0-5 levels, with 0 indicating no pedal assist. If you can't adjust it to 0, long-press "+" and "-", and short-press the power button to adjust the display to P19, then adjust the corresponding value to 000 through "+" or "-".
3.Check the Derailleur. All Kingbull electric bikes come equipped with Shimano 7-speed derailleurs. Before riding, it's recommended to check if shifting gears is smooth, as this will be a significant factor affecting your riding experience.
4.Check the Brakes. Before riding, it's advisable to check the brakes by squeezing the control levers of the front and rear brakes to ensure that the brakes engage as expected. Check if the rubber pads on the brake discs and the screws on the brake discs are tightened to ensure that your brakes operate at maximum efficiency.
5.Check the Throttle. Before checking the throttle, ensure that the rear wheel is lifted off the ground and not in direct contact with the ground. Depending on the throttle method of different models, twist or lightly press the throttle to see if the tire rotates normally, and if the speed value on the display is normal, to ensure normal operation during the ride. If you need to adjust or view the PAS speed on the display, start by long-pressing the '+' and '-' buttons to access the display. Then, navigate to P21 by pressing the power button, and adjust the parameters using the '+' or '-' buttons. Once adjusted, press the power button to move to P22, and continue in the same manner.The smaller the value, the slower the speed, and riders can adjust according to their riding habits.
Conclusion
Taking the time to perform a pre-ride safety check on your electric bike significantly enhances the likelihood of a smooth and enjoyable ride. By consistently conducting these checks and keeping up with regular maintenance year-round, you'll minimize the chances of unexpected maintenance issues cropping up. So, here's to safe and pleasant rides ahead!
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