Metrix+ TL90 Digital Pitch Gauge LCD Backlight RC Helicopter Blade Angle Meter

A. Product Overview

The TL90 Digital Pitch Gauge is an electronic blade angle measuring instrument primarily designed for RC helicopters.

Correct rotor blade pitch is essential for stable helicopter operation, predictable control response and proper collective and cyclic pitch adjustment. The TL90 provides a digital alternative to conventional mechanical pitch gauges by displaying the measured blade angle directly on an LCD screen.

The unit can be mounted onto the helicopter rotor blade so that the user can check its angle while adjusting the rotor head, linkages or servo positions.

Its digital sensor system provides measurements over approximately minus 90 degrees to plus 90 degrees with a resolution of 0.1 degree, allowing precise adjustment during RC helicopter setup.

The backlit LCD makes readings easier to view, while the automatic reversing display helps maintain readable numbers when the instrument is used in different orientations.

Key Features

• Digital RC helicopter pitch gauge
• Measures rotor blade pitch angle
• Approximate measurement range of minus 90 degrees to plus 90 degrees
• 0.1 degree resolution
• LCD display with backlight
• Automatic display orientation
• Electronic gyro based angle measurement
• Suitable for flybar and flybarless RC helicopter setup
• Suitable for approximately 250 mm to 800 mm main rotor blades
• Portable and easy to use
• Useful for rotor head setup and blade alignment
• Suitable for RC helicopter maintenance and tuning

B. Working Principle

The TL90 Digital Pitch Gauge works by detecting the angular position of the rotor blade relative to a reference position.

The gauge is attached to the RC helicopter blade. Its internal electronic sensing system detects changes in angle and converts them into a digital measurement.

The measured blade angle is then shown directly on the LCD display.

During helicopter setup, the user can establish a reference or zero position and then move the collective or cyclic controls. The gauge displays how many degrees the blade has moved from that reference.

For example, if the helicopter requires a specific positive or negative pitch angle, the user can adjust the rotor head linkage until the desired reading appears on the display.

The 0.1 degree resolution helps users make relatively fine adjustments compared with visually reading a traditional mechanical pitch gauge.

The automatic display orientation also makes the screen easier to read when the gauge changes position during rotor blade adjustment.

C. Why Is the TL90 Digital Pitch Gauge Used?

An RC helicopter depends heavily on accurate rotor blade pitch.

If the two main rotor blades are not set correctly, the helicopter may experience unstable flight, uneven lift, poor tracking or inconsistent control response.

The TL90 allows users to measure blade angle directly rather than relying on visual estimation.

It can be used to:

• Set main rotor blade pitch
• Check positive collective pitch
• Check negative collective pitch
• Adjust zero degree blade pitch
• Set cyclic pitch
• Compare pitch between rotor blades
• Assist with blade tracking setup
• Calibrate rotor head linkages
• Check servo and swashplate adjustments
• Configure flybarless RC helicopters
• Configure traditional flybar RC helicopters
• Verify pitch after maintenance
• Check setup after changing servos or linkages
• Fine tune an RC helicopter before flight

Accurate blade pitch measurement is especially important when building a helicopter, replacing rotor head components or changing the flight setup.

D. Suitable Buyers

The TL90 Digital Pitch Gauge is suitable for hobbyists, technicians and model aircraft users who work with RC helicopters.

RC Helicopter Hobbyists

Suitable for enthusiasts who regularly build, maintain or tune their own RC helicopters.

Flybarless Helicopter Users

Flybarless systems require accurate mechanical setup before electronic stabilization is configured. A digital pitch gauge can help verify rotor blade pitch during this process.

Traditional Flybar Helicopter Users

The TL90 can also be used when setting blade angles on conventional flybar based RC helicopters.

RC Model Builders

Model builders assembling helicopter kits can use the gauge during rotor head installation and initial mechanical setup.

RC Helicopter Maintenance Technicians

Technicians repairing RC helicopters can use the gauge to confirm blade pitch after replacing servos, links, rotor heads or related components.

RC Flying Clubs

Flying clubs can keep a digital pitch gauge as part of their common setup and maintenance tool kit.

RC Helicopter Shops

Retailers and service centres dealing with RC helicopters can use the TL90 for setup assistance, demonstrations and customer support.

Advanced RC Pilots

Pilots performing aggressive aerobatic or 3D flying often require carefully controlled positive and negative pitch settings. A digital pitch gauge makes these adjustments easier to measure consistently.

Technical Highlights

Product Name: TL90 Digital Pitch Gauge
Product Type: Digital RC Helicopter Blade Angle Meter
Application: RC helicopter rotor blade pitch measurement
Measurement Range: Approximately minus 90 degrees to plus 90 degrees
Resolution: 0.1 degree
Display: Digital LCD
Backlight: Yes
Display Orientation: Automatic reversing display
Measurement Technology: Electronic gyro based angle sensing
Suitable Blade Length: Approximately 250 mm to 800 mm
Suitable For: Flybar and flybarless RC helicopters

Frequently Asked Questions

1. What is the TL90 Digital Pitch Gauge?

The TL90 is a digital angle measuring tool designed primarily for checking and setting the pitch angle of RC helicopter rotor blades.

2. What does an RC helicopter pitch gauge measure?

It measures the angle of the rotor blade, helping the user set positive pitch, negative pitch and zero pitch during helicopter setup.

3. What is the measurement range of the TL90?

The TL90 provides an approximate measurement range from minus 90 degrees to plus 90 degrees.

4. What is the resolution of the TL90 Digital Pitch Gauge?

The gauge provides a resolution of 0.1 degree, allowing relatively fine blade pitch adjustments.

5. Does the TL90 have a backlit display?

Yes. It features an LCD display with backlight for improved visibility while adjusting the helicopter.

6. Does the display rotate automatically?

The TL90 includes automatic display orientation, which helps keep the reading visible when the gauge is positioned at different angles.

7. Can the TL90 be used with flybarless RC helicopters?

Yes. It is suitable for setting rotor blade pitch on flybarless RC helicopters.

8. Can it also be used with flybar helicopters?

Yes. The TL90 can also be used for conventional flybar based RC helicopter setups.

9. What blade sizes are suitable for the TL90?

The gauge is designed for RC helicopter main blades of approximately 250 mm to 800 mm.

10. Why is correct rotor blade pitch important?

Correct blade pitch helps produce balanced lift and predictable flight behaviour. Incorrect pitch settings can affect stability, blade tracking and control response.

11. Can the TL90 be used to set zero degree pitch?

Yes. It can be used to check and adjust the rotor blade to a zero degree reference position during setup.

12. Can it measure both positive and negative pitch?

Yes. Since the TL90 measures approximately minus 90 degrees to plus 90 degrees, it can be used when adjusting both positive and negative blade pitch.

13. Can the TL90 help with collective pitch setup?

Yes. It can be used to measure blade angle while adjusting collective pitch settings.

14. Can it be used for cyclic pitch adjustment?

Yes. The gauge can assist with checking blade angle during cyclic pitch setup.

15. Is a digital pitch gauge better than a mechanical pitch gauge?

A digital pitch gauge provides a direct numerical reading and fine resolution, which can make accurate adjustment easier than visually interpreting a conventional mechanical scale.