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  3. TRQ SM41D2

TRQ SM41D2 Speedometer Transmitter

fits model: 300m, 200, Cirrus, Concorde, Voyager, Grand. year: 1989–2001.

Sm41d2 Trq Speedometer Transmitter For 200 300m Cirrus Concorde Grand Voyager

( Brand: Trq ), ( Manufacturer Part Number: SM41D2 ), ( Part Type: Speedometer ), ( Placement On Vehicle: Input ), ( Product Warranty: 12 Month Warranty ), ( Part Info: Speed Sensor ), ( Years: 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 ), ( Makes: Chrysler Dodge Eagle Plymouth ), ( Important: Please Read All Notes Before Making This Purchase ), ( Cs-sku: 400 )

Review TRQ Speedometer Transmitter fits CIRRUS CONCORDE VOYAGER GRAND 300M 200 1989–2001

The **SM41D2 Speedometer Transmitter** is a high-performance, precision-engineered replacement unit designed specifically for classic and modern aircraft within the Cirrus Aircraft lineup, including the SR20, SR22, SR24, SR33, SR36, Vision SF50, Vision SF55, and the iconic SR22T, SR24T, and SR33T models. This meticulously crafted component serves as the heart of your aircraft s speed and airspeed instrumentation, ensuring accurate, real-time data transmission to your cockpit gauges with unparalleled reliability. Built to exacting standards, the SM41D2 incorporates a robust **static pressure port interface** and a **dynamic pressure (pitot) input**, allowing it to seamlessly integrate with your aircraft s existing air data system while maintaining the integrity of critical flight parameters. Its **digital signal processing** capabilities deliver smooth, jitter-free readings, eliminating the ghosting or flickering often associated with older analog transmitters, and providing pilots with the confidence to rely on their instruments in all flight conditions from slow, precise approaches to high-speed cross-country flights.

Constructed from **high-grade aluminum and precision-machined components**, the SM41D2 is engineered to withstand the rigors of repeated takeoffs, landings, and high-G maneuvers, ensuring long-term durability without compromising performance. The unit features a **sealed, corrosion-resistant design**, making it ideal for aircraft operated in varied environmental conditions, including humid climates or high-altitude environments where moisture and temperature fluctuations can degrade less robust components. Its **modular wiring harness** simplifies installation, allowing mechanics to quickly and accurately connect the transmitter to the aircraft s existing wiring loom, while its **universal mounting bracket compatibility** ensures a snug, vibration-dampened fit within the aircraft s air data system housing. Whether you re restoring a vintage Cirrus or upgrading an existing model, the SM41D2 offers a direct replacement that exceeds OEM specifications, delivering the precision and dependability expected from modern aviation technology.

Beyond its technical superiority, the SM41D2 is a testament to Cirrus Aircraft s commitment to innovation and pilot-centric design. By eliminating the need for frequent recalibration or troubleshooting, this transmitter reduces maintenance downtime and enhances operational efficiency, allowing pilots to focus on what matters most safe, enjoyable flying. Whether you re a weekend sport pilot or a professional flight instructor, the SM41D2 ensures that your speed and airspeed readings remain crisp, consistent, and trustworthy, from the moment you taxi to the final approach. With its blend of cutting-edge engineering and Cirrus-quality craftsmanship, this component is not just a replacement it s an investment in the longevity and performance of your aircraft.

### Pros and Cons of Buying an SM41D2 Speedometer Transmitter for a 200/300m Cirrus, Concorde, or Voyager Aircraft

#### **Pros:**

1. **Compatibility and Reliability** The SM41D2 is a well-established, high-quality speedometer transmitter designed for gyroplanes and light aircraft. It is widely used in Cirrus, Concorde, and Voyager models due to its proven performance in similar airframes. The unit is built to handle the demands of gyroplane flight, including high G-forces and vibration resistance.

2. **Accurate Airspeed Readings** The SM41D2 provides precise airspeed measurements, which are critical for safe flight operations, especially in low-altitude or slow-speed maneuvers common in gyroplanes. Its digital output ensures consistency and reduces human error compared to analog systems.

3. **Easy Installation and Integration** The SM41D2 is designed for straightforward installation, often requiring minimal wiring and calibration. It can be integrated with existing avionics systems, including GPS, flight computers, or standalone airspeed indicators. Many pilots report that it plugs into the aircraft s existing wiring harness with minimal modifications.

4. **Durability and Weather Resistance** The unit is typically housed in a rugged, sealed casing to protect against moisture, dust, and vibration key concerns in gyroplane operations where the aircraft is often exposed to harsh conditions.

5. **Backward and Forward Compatibility** The SM41D2 is compatible with both analog and digital gauges, making it versatile for retrofitting older aircraft or upgrading newer models. It can work with standard airspeed indicators or modern glass cockpits.

6. **Reduced Maintenance** Digital transmitters like the SM41D2 require less maintenance than mechanical systems, as they lack moving parts prone to wear or failure. This can lower long-term operational costs.

7. **Enhanced Safety Features** Some models include built-in diagnostics or fault detection, alerting pilots to potential issues before they become critical. This is particularly valuable in gyroplanes where reliability is paramount.

8. **Market Availability and Support** The SM41D2 is a widely available component, with extensive documentation, repair guides, and aftermarket support. Spare parts and replacements are easier to source compared to niche or discontinued systems.

9. **Improved Flight Performance Monitoring** For pilots who fly at varying speeds or in complex airspace, the SM41D2 provides real-time feedback on airspeed, aiding in better control and situational awareness.

10. **Cost-Effective Upgrade** Compared to a full avionics overhaul, replacing or upgrading the speedometer transmitter is a relatively inexpensive modification that can significantly improve flight safety and comfort.

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#### **Cons:**

1. **Initial Cost** While the SM41D2 is not excessively expensive, the purchase price, installation labor, and potential additional wiring or gauge upgrades can add up. For some pilots, this may be a significant investment, especially if they are on a tight budget.

2. **Learning Curve for Installation** Although the SM41D2 is designed for ease of installation, improper wiring or calibration can lead to inaccurate readings or system failures. Pilots or mechanics unfamiliar with digital avionics may require additional training or guidance.

3. **Potential for Signal Interference** In some cases, electromagnetic interference (EMI) from other avionics or electrical systems in the aircraft could affect the SM41D2 s performance. This is less common but requires careful shielding or grounding during installation.

4. **Compatibility with Older Systems** If the aircraft s existing wiring or gauges are outdated, additional modifications may be needed to ensure seamless integration. This could involve upgrading the airspeed indicator or running new cables.

5. **Limited Customization** The SM41D2 is a standard unit with fixed output parameters. Pilots who require highly specialized settings (e.g., unique calibration curves for specific airframes) may need to work with the manufacturer or an avionics specialist to achieve optimal performance.

6. **Dependence on Power Supply** Like all electronic systems, the SM41D2 requires a stable power source. In the event of a power failure or voltage fluctuations, the unit may fail to operate, potentially leaving the pilot without critical airspeed data.

7. **Potential for Obsolescence** While the SM41D2 is a durable and reliable unit, avionics technology evolves rapidly. Future upgrades to the aircraft s avionics suite might require compatibility checks or additional hardware to ensure the SM41D2 continues to function seamlessly.

8. **Warranty and Support Limitations** Some aftermarket components, including the SM41D2, may have limited warranty coverage or support compared to OEM (Original Equipment Manufacturer) parts. Pilots should verify the warranty terms and availability of local technicians before purchasing.

9. **Physical Space Requirements** Depending on the aircraft s layout, installing the SM41D2 may require relocating wiring or components to avoid interference with other systems. This could involve minor structural adjustments, adding to the complexity of the installation.

10. **Potential for Overkill** For pilots who primarily fly at low speeds or in simple conditions, the SM41D2 may offer more precision than necessary. In such cases, the benefits may not justify the cost, and a simpler analog system could suffice.

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### **Conclusion:**

The SM41D2 speedometer transmitter is a **highly recommended upgrade** for owners of Cirrus, Concorde, or Voyager gyroplanes, particularly those seeking improved airspeed accuracy, reliability, and modern avionics integration. Its strengths in durability, ease of installation, and compatibility with existing systems far outweigh its minor drawbacks, which are largely manageable with proper planning and professional assistance.

For pilots who prioritize safety, performance monitoring, and long-term reliability, the SM41D2 is an excellent investment. However, those on a tight budget or flying in very basic conditions may find that the benefits do not fully justify the expense. In such cases, a thorough cost-benefit analysis considering the aircraft s specific needs, flight profile, and existing avionics is advisable.

### **Recommendation:** If you are considering the SM41D2 for your 200/300m Cirrus, Concorde, or Voyager, proceed with the purchase and installation if:

- You value precise airspeed readings for safe and efficient flight.

- You are willing to invest in a system that reduces maintenance and improves reliability.

- You have access to a qualified avionics technician to ensure proper installation and calibration.

- Your aircraft s wiring and gauge system can accommodate the unit without major modifications.

For best results, consult with an experienced gyroplane mechanic or avionics specialist to assess compatibility, discuss installation requirements, and address any potential challenges specific to your aircraft. The SM41D2 is a sound choice for most gyroplane owners looking to modernize their instrumentation.

Details:

Chrysler 300M 1999 -2004. Plymouth Grand Voyager 1994, 1996 - 2000 Automatic. Chrysler Concorde 1993 -2004. Chrysler Cirrus 1995 - 2000.

specifications boosttempgauges:

  • for models: 300m, 200, Cirrus, Concorde, Voyager, Grand
  • for years: 1989-2001
  • brand: Trq
  • mpn: Sm41d2
  • part type: Speedometer
  • placement on vehicle: Input
  • product warranty: 12 Month Warranty
  • part info: Speed Sensor
  • years: 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001
  • makes: Chrysler Dodge Eagle Plymouth
  • important: Please Read All Notes Before Making This Purchase
  • cs-sku: 400

general boosttempgauges:

  • Interior Parts Accessories > Gauges > Individual Gauges
  • condition: New

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  • policy: Returns Accepted
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  • sold: 0
  • availability: In Stock
  • started: June 5, 2026
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  • rating: 98.8%
  • city: San Fernando, California
  • # reviews: 68776

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for models: 300m, 200, cirrus, concorde, voyager, grand, for years: 1989-2001, part type: speedometer, placement on vehicle: input, product warranty: 12 month warranty, part info: speed sensor, years: 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001, makes: chrysler dodge eagle plymouth, important: please read all notes before making this purchase, cs-sku: 400,
category: auto parts > interior parts accessories > gauges > individual gauges, sku: 20962245354473722,
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