1. Introduction
Thank you for choosing the GoolRC G.T.Power Ignition Mini Tachometer. This device is a professional engine speed tester designed for durability, ease of operation, and portability. Utilizing an intelligent MCU for stable performance, it is an essential tool for model aircraft enthusiasts. This tachometer is compatible with Rcexl series ignition systems, commonly found in engines such as DLE series and MT gas engines.
Image 1: The GoolRC G.T.Power Ignition Mini Tachometer, showcasing its compact design and digital display.
2. Product Features
- Utilizes PIC 16F628a microcontrollers for reliable performance.
- Compact and lightweight design for convenient portability.
- Self-powered, eliminating the need for external batteries.
- Equipped with a standard FUTABA plug for easy connection.
- Features a 4-digit display to monitor engine speed.
- Capable of indicating engine speeds up to 30,000 RPM.
- Includes an increased self-test feature for diagnostic purposes.
3. Package Contents
Upon opening the package, you should find the following item:
- 1 x G.T.POWER RC Ignition Mini Tachometer
Image 2: The tachometer shown alongside its compact instruction sheet, as typically found in the package.
4. Specifications
| Attribute | Value |
|---|---|
| Brand Name | G.T.POWER (GoolRC) |
| Model Number | RM5486 |
| Weight | 17g (0.6 ounces) |
| Dimension | 54 x 20 x 15mm (2.13 x 0.79 x 0.59 inches) |
| Working Voltage | 3 - 12V |
| Working Current | 25 - 60mA |
| Material | Plastic |
5. Setup
The GoolRC Mini Tachometer is designed for straightforward integration with Rcexl series ignition systems. Follow these steps for proper setup:
- Identify the Ignition Module: Locate the Rcexl series ignition module on your RC engine.
- Locate the RPM Output Port: The ignition module typically has a dedicated 3-pin port for RPM output, often labeled 'RPM' or similar. This port is designed to accept a standard FUTABA-style connector.
- Connect the Tachometer: Plug the 3-pin connector of the GoolRC Mini Tachometer into the RPM output port of your ignition module. Ensure the connector is oriented correctly. The standard wiring for a FUTABA-style plug is typically:
- Black wire: Negative (-)
- Red wire: Positive (+)
- White wire: Signal (S)
- Power Source: The tachometer draws its power directly from the ignition system (3-12V), so no separate battery connection is required for the tachometer itself.
- Secure Placement: Mount the tachometer in a location where its display is easily visible during engine operation, ensuring it is secure and not subject to excessive vibration.
Image 3: The tachometer showing its integrated 3-pin connector, ready for connection to an ignition module.
6. Operating Instructions
Once properly connected, the GoolRC Mini Tachometer will automatically display the engine's revolutions per minute (RPM) when the engine is running. Follow these guidelines for accurate readings:
- Engine Start-up: Start your RC engine according to its manufacturer's instructions.
- Reading the Display: The tachometer features a 4-digit digital display. This display shows the engine's RPM in hundreds. For example, if the display shows '150', the actual engine speed is 150 x 100 = 15,000 RPM.
- RPM Range: The tachometer is designed to indicate engine speeds up to 30,000 RPM.
- Self-Test Feature: The device includes an increased self-test feature. Upon initial power-up or connection, the display may cycle through a brief test sequence before showing live RPM data.
Image 4: A close-up view of the tachometer's 4-digit display, which shows RPM values in hundreds.
7. Maintenance
To ensure the longevity and reliable performance of your GoolRC Mini Tachometer, observe the following maintenance recommendations:
- Cleaning: Use a soft, dry cloth to clean the exterior of the tachometer. Avoid using harsh chemicals or abrasive materials that could damage the casing or display.
- Storage: When not in use, store the tachometer in a dry, cool environment, away from direct sunlight and extreme temperatures.
- Connections: Periodically inspect the wiring and connector for any signs of wear, fraying, or corrosion. Ensure connections remain secure.
- Avoid Impact: Protect the device from physical shocks or drops, as internal components can be sensitive.
8. Troubleshooting
If you encounter issues with your GoolRC Mini Tachometer, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| Display shows '0000' or flashes intermittently. |
|
|
| RPM reading appears too low (e.g., '150' instead of '15000'). | Misinterpretation of the display. | Remember that the display shows RPM in hundreds. Multiply the displayed value by 100 to get the actual RPM (e.g., '150' means 15,000 RPM). |
| Tachometer does not work with a specific engine. | Incompatibility with the engine's ignition system. | This tachometer is designed for Rcexl series ignition systems (e.g., DLE, MT gas engines). Verify your engine uses a compatible ignition system. Consult your engine's manual for ignition type. |
| Display is dim or unreadable. | Insufficient power supply or faulty unit. | Ensure the ignition system is providing adequate voltage (3-12V). If the issue persists after checking power, the unit may be faulty. |
9. Warranty and Support
Specific warranty information for the GoolRC G.T.Power Ignition Mini Tachometer is not provided within this manual. For details regarding warranty coverage, return policies, or technical support, please refer to your purchase documentation or contact the retailer from whom you purchased the product. You may also visit the official GoolRC Store on Amazon for additional product information and support resources.