When the Trail Mekere is functioning properly, the speed sensor helps to measure the speed of the bicycle. The speed sensor is a small device that is attached to the fork of the bicycle and measures the speed of the bicycle by detecting the magnets on the spokes of the wheel. If the speed sensor is not adjusted properly, the Trail Mekere may not be able to accurately measure the speed of the bicycle and may provide incorrect data. In this article, we will provide step-by-step instructions on how to adjust the speed sensor of the Trail Mekere.
Before beginning the adjustment process, it is important to gather the necessary tools and materials. You will need a Phillips head screwdriver, a small flat head screwdriver, and a magnet. Once you have gathered the necessary tools and materials, you can begin the adjustment process. First, remove the speed sensor from the fork of the bicycle by unscrewing the two Phillips head screws that hold it in place. Next, use the small flat head screwdriver to adjust the position of the magnet on the sensor. The magnet should be positioned so that it is directly opposite the magnets on the spokes of the wheel. Once you have adjusted the position of the magnet, reattach the speed sensor to the fork of the bicycle and tighten the two Phillips head screws. Finally, test the speed sensor by riding the bicycle and checking the data on the Trail Mekere display. If the speed sensor is adjusted properly, it will accurately measure the speed of the bicycle and provide correct data.
Adjusting the speed sensor of the Trail Mekere is a simple process that can be completed in a few minutes. By following the instructions in this article, you can ensure that the speed sensor is adjusted properly and is providing accurate data. If you have any questions about the adjustment process, please consult the Trail Mekere user manual or contact Trail Mekere customer support.
Identifying the Speed Sensor
The speed sensor is a crucial component of your Trail Mekere that measures the rotational speed of the rear wheel. It transmits this information to the bike’s computer, which then displays your speed and other metrics. Identifying the speed sensor is essential for proper maintenance and troubleshooting.
**Location:** The speed sensor is typically mounted on the rear fork or chainstay, close to the rear wheel. It’s usually a small, cylindrical device with a wire leading to the bike’s computer.
**Shape and Size:** Speed sensors vary in shape and size depending on the model, but they’re generally small and compact. Look for a device that’s about the size of a quarter or a thumb, with a wire emerging from one end.
**Color:** Speed sensors come in various colors, but they’re commonly black or grey. The color may blend in with the surrounding components, so pay close attention to the other characteristics.
**Wire Connection:** The speed sensor is connected to the bike’s computer via a wire. Follow the wire from the sensor to the computer to confirm its identity.
**Table: Identifying Speed Sensor Features
| Feature | Characteristics |
|---|---|
| Location | Mounted on rear fork or chainstay, near rear wheel |
| Shape and Size | Small, cylindrical device, approximately quarter or thumb size |
| Color | Typically black or grey, may vary |
| Wire Connection | Connected to bike’s computer via a wire |
Locating the Adjustment Screw
**Step 1: Remove the Battery Cover**
Locate the access point for the battery and remove the cover to expose the battery.
Step 2: Identify the Wires Connector
Unplug the electrical connector attached to the battery. Observe the bundle of wires leading away from the connector.
Step 3: Follow the Wires to the Sensor
Trace the bundle of wires back along its course. It will eventually lead to the speed sensor, which is typically mounted near the rear wheel.
Step 4: Find the Adjustment Screw
The adjustment screw for the speed sensor is usually a small, slotted screw located on the sensor body. It may be covered by a rubber or plastic cap for protection.
Step 5: Remove the Cap (if necessary)
If a cap is present, gently remove it to expose the adjustment screw.
Step 6: Identify the Direction of Adjustment
The adjustment screw will have a designated direction for both clockwise (CW) and counterclockwise (CCW) rotation. These directions may be indicated on the sensor housing or in the user manual.
Step 7: Note the Initial Position
Before making any adjustments, note the current position of the adjustment screw. This will provide a reference point for any subsequent changes.
Step 8: Adjust the Screw as Needed
Using a slotted screwdriver, make small incremental adjustments to the screw in the desired direction. The specific direction and amount of adjustment will depend on the sensor specifications and the desired speed calibration.
Step 9: Replace the Cap (if necessary)
If a cap was removed earlier, replace it over the adjustment screw to protect it from dirt and moisture.
Step 10: Reconnect the Battery
Reattach the electrical connector to the battery. Ensure a secure connection to maintain electrical continuity.
Step 11: Calibrate the Sensor
Follow the specific calibration instructions provided by the manufacturer’s user manual to ensure the sensor is properly calibrated for accurate speed readings.
Using an Allen Key for Adjustment
To adjust the speed sensor on a Trail Mekere using an Allen key, follow these detailed steps:
- Locate the speed sensor: The speed sensor is typically mounted near the rear wheel of the e-bike. It is a small, cylindrical device with wires connected to it.
- Loosen the adjustment screw: Using a 3mm Allen key, locate the small adjustment screw on the speed sensor. Carefully loosen the screw, but do not remove it completely.
- Rotate the sensor: Once the adjustment screw is loose, you can rotate the speed sensor slightly. Turning the sensor clockwise will increase the wheel circumference, while turning it counterclockwise will decrease the wheel circumference.
- Calculating wheel circumference
- Adjusting wheel circumference
Increase the wheel circumference if the speedometer is reading lower than the actual speed. Decrease the wheel circumference if the speedometer is reading higher than the actual speed.
Make small adjustments at a time, rotating the sensor just a few degrees and re-tightening the screw before testing the accuracy.
- Tighten the adjustment screw: Once the speed sensor is adjusted to the correct position, re-tighten the adjustment screw using the Allen key. Make sure the screw is snug but do not overtighten it.
- Test the adjustment: Ride the e-bike for a short distance and use a GPS device or other speedometer to check the accuracy of the speed reading. Fine-tune the adjustment as needed by repeating the above steps.
Counterclockwise for Increasing Speed
To increase the speed of the treadmill, turn the speed sensor clockwise. This will increase the voltage sent to the motor, causing it to run faster. The speed will be displayed on the console.
Here are the steps on how to adjust the speed sensor counterclockwise for increasing speed:
1.
Locate the speed sensor. It is usually located on the side of the treadmill, near the motor.
2.
Turn the speed sensor counterclockwise. Use a screwdriver or a wrench to turn the sensor.
3.
Test the speed of the treadmill. Walk or run on the treadmill to test the speed.
4.
Repeat steps 2 and 3 until you reach the desired speed.
Step Description 1 Locate the speed sensor. 2 Turn the speed sensor counterclockwise. 3 Test the speed of the treadmill. 4 Repeat steps 2 and 3 until you reach the desired speed. Clockwise for Decreasing Speed
To adjust the speed sensor on a Trail Mekere, you need to use a 2mm hex key. Turn the sensor clockwise to decrease the speed. Turning the sensor one full turn will decrease the speed by approximately 10%. You can make smaller adjustments by turning the sensor less than one full turn.
Steps
1. Locate the speed sensor on the Trail Mekere. It is usually located on the rear wheel.
2. Insert the 2mm hex key into the adjustment screw on the speed sensor.
3. Turn the adjustment screw clockwise to decrease the speed.
4. Turn the adjustment screw counterclockwise to increase the speed.
5. Make small adjustments until you reach the desired speed. It may take some trial and error to get the speed just right.Tips
* If you are not sure how much to adjust the speed, start by making small adjustments. You can always make further adjustments later.
* If you over-adjust the speed, you can reset it by turning the adjustment screw counterclockwise until it stops.
* The following table shows the approximate speed decrease for each full turn of the adjustment screw:| Number of Turns | Speed Decrease |
|—|—|
| 1 | 10% |
| 2 | 20% |
| 3 | 30% |
| 4 | 40% |
| 5 | 50% |Testing the Adjustment
To test the adjustment, you should ride the bike in an area where you can safely reach a speed of at least 20 mph (32 km/h). Once you’re up to speed, shift the bike into the highest gear and pedal steadily. If the speedometer is reading accurately, you should be able to maintain a constant speed without any fluctuations.
If the speedometer is still not reading accurately, you may need to fine-tune the adjustment. To do this, return to the magnet and sensor and make small adjustments to the position of the sensor. Remember to test the adjustment after each change you make.
More detailed instructions for fine-tuning the adjustment:
1. Loosen the screws that hold the sensor in place.
2. Move the sensor slightly closer to or farther away from the magnet.
3. Tighten the screws and test the adjustment.
4. Repeat steps 2 and 3 until the speedometer is reading accurately.Adjustment Result Move the sensor closer to the magnet Increase the speed reading Move the sensor farther away from the magnet Decrease the speed reading Once you’re satisfied with the accuracy of the speedometer, tighten the screws that hold the sensor in place. You should now be able to use the speedometer to accurately track your speed.
Fine-Tuning the Setting
Once you have installed the speed sensor and set the basic parameters, you may need to fine-tune the setting to achieve optimal performance. Here are some steps to guide you through the fine-tuning process:
1. Check the Calibration
Ensure that the speed sensor is properly calibrated. Refer to the manufacturer’s instructions for the specific calibration procedure.
2. Adjust the Offset
The offset is a small adjustment that compensates for any inherent inconsistencies in the speed sensor or the bike’s setup. Make small increments to the offset until the speed readings align with your actual speed.
3. Set the Wheel Circumference
Enter the correct wheel circumference into the computer to ensure accurate speed calculations. You can measure the wheel circumference by wrapping a measuring tape around the outside of the tire.
4. Select the Magnet Position
The magnet position can influence the accuracy of the speed readings. Experiment with different magnet positions on the spoke to find the optimal placement that yields the most consistent results.
5. Test the Setting
Take the bike for a ride on a known distance and compare the computer’s readings to your actual speed. If the readings are inaccurate, make further adjustments to the offset or magnet position.
6. Check for Interference
Ensure that there are no obstacles or interference between the speed sensor and the magnet. This could include debris, loose wires, or improper alignment.
7. Troubleshooting Common Issues
Issue Possible Cause Solution No speed readings Sensor not installed properly Check installation and ensure proper alignment Erratic or inconsistent readings Magnet misaligned or damaged Realign or replace the magnet Readings too high or too low Offset set incorrectly or wheel circumference entered incorrectly Recalibrate offset or double-check wheel circumference Continue fine-tuning until you achieve accurate and consistent speed readings. Once the settings are optimized, you can enjoy reliable and precise tracking of your speed and distance.
Securing the Adjustment
Step 7: Tightening the Locking Nut
Once the sensor’s position is set, tighten the locking nut firmly using an appropriate wrench. Ensure it is sufficiently hand-tight to prevent any potential movement.
Step 8: Reattaching the Sensor Wire
Gently reattach the sensor wire to the appropriate connector. Make sure the connection is secure and aligns correctly. Double-check the wire’s orientation to avoid any misalignment.
Table: Connector Orientation for Sensor Wire
Sensor Type Connector Orientation Reed Switch Arrow markings on sensor body should align with arrow markings on connector Hall Sensor No specific orientation required Step 9: Tightening the Sensor Mounting Bracket
Tighten the sensor mounting bracket securely to the frame or fork using the provided bolts. Make sure the bracket is adequately tightened to prevent any loosening or movement during riding.
Step 10: Verifying the Adjustment
After securing all components, spin the wheel and observe the speedometer reading. Ensure that the displayed speed accurately reflects the actual wheel speed. If necessary, make minor adjustments to the sensor’s position until the desired accuracy is achieved.
Common Troubleshooting Issues
If you encounter any issues with the Trail Mekere speed sensor, refer to the following common troubleshooting tips:
1. Check the Battery
Ensure that the battery is properly installed and has sufficient power. Replace the battery if necessary.
2. Inspect the Connections
Verify that the speed sensor and the bike computer are securely connected. Ensure that the wires are not damaged or loose.
3. Reset the Sensor
If the sensor is not functioning correctly, try resetting it. Remove the battery, wait a few seconds, and then reinsert it.
4. Calibrate the Sensor
If the speed readings are inaccurate, calibrate the sensor according to the manufacturer’s instructions.
5. Check the Magnet Alignment
Ensure that the magnet on the wheel is aligned properly with the sensor. Adjust the magnet’s position if necessary.
6. Inspect the Wheel Speed
Verify that the bike wheel is spinning at a reasonable speed. The sensor may not function correctly if the wheel is stationary or moving too slowly.
7. Avoid Electrical Interference
Keep the sensor away from sources of electrical interference, such as power lines or other electronic devices.
8. Test the Sensor
Remove the speed sensor from the bike and connect it to a compatible device to test its functionality.
9. Advanced Troubleshooting
Speed Sensor Failing Intermittently
This issue can be caused by a weak battery, loose connections, or a faulty sensor. Replace the battery, check the connections, and test the sensor using the steps outlined above. If the sensor is still not functioning correctly, contact the manufacturer for further assistance.
Maintenance and Calibration
Maintenance
1. Regularly inspect the speed sensor for any visible damage or loose connections.
2. Clean the sensor with a soft brush or cloth to remove dirt and debris.
3. Check the sensor’s mounting and ensure it is secure.
4. Inspect the sensor’s wiring for any breaks or damage.
5. Test the sensor’s functionality by spinning the wheel it measures.Calibration
Calibration of the speed sensor is crucial for accurate speed readings. Here are specific steps for calibrating the Trail Mekere:
1. **Prepare the Bike and Sensors:** Ensure the bike is stabilized and the tire with the speed sensor is off the ground.
2. **Connect to Device:** Use the device that receives data from the sensor, such as a bike computer or smartphone app, and establish a connection.
3. **Locate Calibration Mode:** Access the calibration settings within the device’s menu or app.
4. **Start Calibration:** Initiate the calibration process through the device.
5. **Spin the Wheel:** Manually spin the tire with the speed sensor attached.
6. **Set Reference Distance:** Enter the known reference distance you will spin the tire for, such as 10 or 20 revolutions.
7. **Spin the Tire:** Spin the tire for the specified number of revolutions at a steady pace.
8. **Stop Spinning:** Once you complete the specified revolutions, stop spinning the tire.
9. **Calibration Complete:** The device will automatically calculate and adjust the sensor’s calibration parameters.
10. **Extended Details for Calibration:**
– Recommended reference distance: 10 to 20 revolutions
– Steady spinning speed: Maintain a consistent speed throughout the spinning process
– Time limit for spinning: Complete the specified revolutions within 60 seconds or less
– Multiple calibration attempts: Perform multiple calibration runs and compare results for accuracyHow to Adjust Speed Sensor Trail Mekere
The speed sensor on a Trail Mekere is a crucial component that measures the bike’s speed and transmits data to the display. Over time, due to various factors, the speed sensor may need adjustment to ensure accurate speed readings.
Here’s a step-by-step guide on how to adjust the speed sensor on a Trail Mekere:
- Identify the speed sensor: The speed sensor is typically located near the rear wheel hub. It’s a small, cylindrical device with a magnet inside.
- Loosen the mounting bolts: Use a compatible wrench or screwdriver to loosen the bolts that hold the speed sensor in place.
- Move the sensor: Adjust the position of the speed sensor by sliding it closer to or further away from the spokes on the rear wheel. The optimal distance is usually around 2-5 mm from the spokes.
- Tighten the bolts: Once the sensor is in the correct position, tighten the mounting bolts securely to hold it in place.
- Test the sensor: Go for a short ride and observe the speed readings on the display. If the speed is accurate, the adjustment is successful.
People Also Ask
How often should I adjust the speed sensor?
The speed sensor should be checked and adjusted periodically, especially if you notice any inconsistencies in speed readings.
What are the signs of a faulty speed sensor?
Signs of a faulty speed sensor include inaccurate speed readings, intermittent signals, or no signal at all.
What are the consequences of an unadjusted speed sensor?
An unadjusted speed sensor can lead to inaccurate speed readings, which can affect your training data, GPS tracking, and overall riding experience.
To calculate the wheel circumference, measure the tire’s diameter in inches or millimeters. Multiply this measurement by 3.14 (pi) to get the circumference.
| Unit | Formula |
|---|---|
| Inches | Circumference = Diameter (in) x 3.14 |
| Millimeters | Circumference = Diameter (mm) x 3.14 |
