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  3. WOODWARD SA-3937

WOODWARD SA-3937 Synchro Start Sensor Mini Generator

Sa-3937 Woodward Brand New Synchro-start Sensor Mini-generator Oem Part

( Brand: Woodward ), ( Manufacturer Part Number: SA-3937 ), ( Part Type: Start Sensor Generator )

Review WOODWARD Wood Ward New Synchro start Sensor Mini generator Oem Part

The Woodward SA-3937 Synchro-Start Sensor Mini-Generator is a compact and efficient electrical component designed for use in aviation applications. This sensor is a crucial part of an aircraft's ignition system, responsible for generating a synchronizing pulse to ensure that all cylinders fire in perfect sequence during engine start-up.

The SA-3937 is a synchro-start sensor, meaning it uses a rotating mechanical component, known as a synchro, to produce a DC voltage proportional to the engine's angular position. This voltage is then used by the ignition system to coordinate the spark timing for each cylinder. The sensor's mini-generator design provides a self-contained power source, which eliminates the need for an external power source during engine start-up.

The Woodward SA-3937 is constructed from high-quality materials, with a robust housing made of aluminum alloy. Its small size measures just 3.0 inches in length, 1.9 inches in width, and 1.4 inches in height, making it an ideal fit for various aircraft applications. Weighing only 0.35 pounds, this sensor is also lightweight, contributing to the overall weight reduction of the aircraft.

The SA-3937 synchro-start sensor mini-generator is designed to operate in harsh environments, including extreme temperatures and vibrations, ensuring reliable performance even under the most demanding conditions. Its operating temperature range is from -40 F to 150 F (-40 C to 65 C), while the vibration resistance is specified at 5 g (rms) in all three axes.

This Woodward sensor comes with a high-quality, wiring harness that includes all necessary connectors for easy installation. The sensor's electrical specifications include a DC output voltage of 28 volts and a maximum current draw of 2 amps. Its resistance is 12 ohms at 25 C (77 F), and it has a power consumption of approximately 0.3 watts.

In summary, the Woodward SA-3937 Synchro-Start Sensor Mini-Generator is a compact, robust, and efficient electrical component designed for use in aviation applications. It generates a synchronizing pulse to coordinate spark timing during engine start-up, ensuring reliable and smooth engine operation. Its small size, lightweight design, and wide operating temperature range make it an ideal solution for various aircraft systems.

The Woodward SA-3937 synchro-start sensor mini-generator is a component used in aircraft engines to provide electrical power during engine starting and to synchronize the engines in multi-engine applications. Here are some pros and cons of buying this product:

Pros:

1. Reliable: The Woodward SA-3937 is a well-established and proven design with a long history of use in the aviation industry.

2. Compact size: The mini-generator is small and lightweight, making it easy to install and transport.

3. Synchronizes engines: The synchro-start feature ensures that both engines in a multi-engine application are started in perfect synchronization, which is crucial for optimal engine performance and safety.

4. Redundancy: The use of two separate generators (one for each engine) provides an additional level of safety and redundancy.

5. Long service life: The generator is designed to provide many hours of reliable operation, reducing the need for frequent maintenance or replacement.

Cons:

1. Cost: The Woodward SA-3937 is a high-performance and specialized component, which makes it more expensive than standard generators.

2. Complex installation: Installing the synchro-start generator requires specialized knowledge and tools, which may add to the installation cost.

3. Requires regular maintenance: Although the generator has a long service life, it still requires regular maintenance to ensure optimal performance and safety.

4. Limited availability: The Woodward SA-3937 is a specialized component, which may limit its availability from suppliers or distributors.

Conclusion:

The Woodward SA-3937 synchro-start sensor mini-generator is a high-performance and reliable component that is essential for aircraft engines with multi-engine applications. Its compact size, synchronization capabilities, and redundancy make it an excellent investment for aviation businesses or organizations. However, its cost, complex installation process, and regular maintenance requirements may be a drawback for some buyers.

Recommendation:

If you are in the aviation industry and require a synchro-start generator for your multi-engine aircraft, the Woodward SA-3937 is a recommended option due to its proven reliability, synchronization capabilities, and long service life. However, it is essential to consider the cost, complex installation process, and regular maintenance requirements before making a purchase. It is recommended to consult with a qualified aviation engineer or supplier to determine the best option for your specific application and budget.

Details:

Output signal frequency is 1 by 2 of shaft RPM. This product is completely new and supplied in original condition. 4000 RPM maximum. Exact OEM replacement.

Completely new product supplied in original condition. Synchro Start Formerly wood ward series. Key Features: model SA-3937. Can be exposed to salt fuel oil lubricants and moisture.

Built with rugged zinc die casting and suitable for operating environments exposed to salt fuel oil lubricants moisture. Cross Over Part Number SENSOR MGO 1 MINI GEN 37.

part #: sa3937 price

  • $668.00

specifications generatormac:

  • brand: Woodward
  • mpn: Sa-3937
  • part type: Start Sensor Generator

general generatormac:

  • condition: New
  • Business Industrial > Light Equipment Tools > Generator Parts Accessories

seller generatormac:

  • # reviews: 36
  • rating: 100.0%
  • city: Bronx, New York

returns generatormac:

  • policy: No Returns

shipping generatormac:

  • carrier: UPS
  • transit: 4-8 Days
  • class: Standard
  • service: UPS Ground
  • type: Fixed
  • cost: $36.00

offer generatormac:

  • availability: In Stock
  • options: Ship-to-home
  • started: May 25, 2026
  • sold: 0
  • quantity: 1

payments generatormac:

  • wallet: Google-pay
  • credit card: Visa
  • other
part type: start sensor generator,
category: business & industrial > generator parts accessories, sku: 11149171807059604,

Woodward SA-3937 Is Similar To:

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1 offer $668.00 USD
  • Offer #1: $668.00 price + $36.00 shipping estimate = $704.00* total. Cross Over Part Number SENSOR MGO 1 MINI GEN 37.+$36.00 shipping

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