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ACES Systems Z2021 – Cobra II 2-Channel Vibration & Balancing Analyzer

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Versatile and compact, the ACES Cobra II Z2021 is a 2-channel vibration and balancing analyzer that combines all of the diverse technologies required for high-end engine vibration analysis, rotor track and balance, and propeller balance into one tool. With the Cobra II, these maintenance functions can be easily performed on virtually any airframe and engine type, such as a 2-propeller airplane.

 

FEATURES

This option ONLY includes the analyzer box.

 

SPECIFICATIONS

Vibration Input: 9.5V Pk-Pk, 0 to 240 IPS Peak with 20 mV per IPS sensor
Sensor Types: Accepts any vibration signal input (acceleration, velocity, displacement) and any voltage-generating sensor.  External charge amplifier required for charge mode.
Vibration Amplitude Accuracy: ±1% across the frequency range
Frequency Range: Selectable up to 30 kHz (1,800,000 RPM)
Tachometer Inputs: Better than 1° phase accuracy – 60 to 10,000 RPM
Display: 7" day/night readable color LCD display with super-bright LED backlight
Memory: 1 GB Flash
Dimensions: 10.5" W x 9.75" L x 5" D
Weight: Approx. 6 lbs (2.8 kg)
Power Requirements: Smart Li-Ion battery (internal), 87 Wh
Operating Time: 8 hours
Charging Time: 3 hours (approx.)
Vibration Channels: 2 each
Tach / Mag Pickup: 2 each
Trax Optical Tracker 1 each
Strobe: 1 each
USB Port: 2 each
Phase Accuracy: <1°
Balance Frequency: 60 to 10,000 RPM,± 0.2%
Vibration Freq Range: 0 to 30 kHz
Vibration Amplitude: 0 to 240 IPS (peak), 20 mV / IPS
Dynamic Range: 98 dB
Operating Temperature: -4°F to 120°F (-20°C to +49°C)
Relative Humidity: 10% to 85% (non-condensing)
AC Input: The data acquisition system is capable of measuring AC values to 9.5V Peak-Peak.
Sensor Types: The analyzer will accept any vibration signal input (acceleration, velocity, or displacement.) The input is then displayed as collected or integrated into any other vibration unit. The vibration input will accept any voltage-generating sensor
(must have external charge converter when in charge mode) and will supply power to the sensor when required. The Cobra II only accepts acceleration or velocity inputs.
Analysis Range: Anti-aliasing filters are used with a Fast Fourier Transform (FFT) to accurately transform data from the time to the frequency domain. The analyzer will perform FFT resolutions of 100, 200, 400, 800, 1600, and 3200 lines.

 

General Information
Part #Z2021
ManufacturerAces Systems
Shipping Information
Product Weight6 lbs.
Product Dimensions10 x 11 x 5 in.
Schedule B9031100000
ECCN9B990

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AIRCRAFT COMPATIBILITY

Compatible Aircraft*
*This list is for general reference only and may not be entirely accurate for all aircraft. Please confirm all equipment meets the requirements of your aircraft with the owners/maintenance manuals prior to purchasing or using with your aircraft.

PRODUCT REVIEWS

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QUESTIONS & ANSWERS

Question:
What types of aircraft can the ACES Systems Cobra II analyzer be used on?
Answer:

The ACES Systems Z2021 – Cobra II Analyzer is designed for use on virtually any airframe and engine type, from piston aircraft to turbines and helicopters. It can perform propeller balancing, main and tail rotor track and balance, as well as vibration analysis across a wide range of models. Its flexibility makes it a go-to solution for maintenance crews servicing mixed fleets.

Asked October 16, 2025
Question:
How does the Cobra II improve efficiency during vibration analysis?
Answer:

The Cobra II uses an ACES AI Learning Algorithm that generates accurate balance and vibration solutions in the fewest possible runs. This reduces engine runtime, saves fuel, and minimizes downtime. Over time, its self-improving software refines results for even faster, more consistent balancing performance.

Asked October 16, 2025
Question:
Can the Cobra II analyzer generate maintenance reports directly?
Answer:

Yes. The Cobra II allows technicians to generate PDF reports directly from the analyzer, storing them on a USB flash drive for easy printing or digital recordkeeping. This feature simplifies documentation and ensures compliance with aviation maintenance standards.

Asked October 16, 2025
Question:
Is a computer required to operate or analyze data from the Cobra II?
Answer:

No, the Cobra II Analyzer functions independently of any PC or proprietary software. Data review, analysis, and transfer can all be performed on the device itself, which features a high-resolution color display for use in the field. This standalone capability makes it ideal for remote operations or ramp-side maintenance.

Asked October 16, 2025
Question:
What kinds of vibration inputs can the Cobra II accept?
Answer:

The Cobra II Analyzer accepts vibration signal inputs for acceleration, velocity, and displacement, as well as any compatible voltage-generating sensors. For charge-mode accelerometers, an external charge amplifier is required. This flexibility allows use with a wide range of vibration sensors and aircraft maintenance configurations.

Asked October 16, 2025
Question:
How is the Cobra II used in the MORE PT6 Engine Maintenance Program?
Answer:

The Cobra II Analyzer is approved for use under the MORE (Maintenance On Reliable Engines) PT6 Program, enabling accurate vibration capture for PT6A engine compliance reporting. Maintenance teams can use the analyzer to record and store balance and vibration data that meets STC requirements under the MORE program.

Asked October 16, 2025
Question:
What are the storage and data management capabilities of the Cobra II?
Answer:

The Cobra II can store hundreds of aircraft and engine setup profiles, enabling technicians to quickly recall previous configurations. This reduces setup time and ensures consistent data across repeat maintenance events. New airframes can easily be added using industry-standard polar charts.

Asked October 16, 2025
Question:
What is the display like on the Cobra II Analyzer?
Answer:

The 7” day/night-readable color LCD display offers excellent visibility even in bright sunlight or dark hangars. It features a full spectral display with harmonic cursors that make vibration peaks easy to identify during analysis, providing test-cell accuracy from a portable device.

Asked October 16, 2025
Question:
How does the Cobra II ensure accuracy in vibration readings?
Answer:

The analyzer maintains a vibration amplitude accuracy of ±1% across its frequency range, which can reach up to 30 kHz (1,800,000 RPM). This precision ensures reliable balancing and vibration diagnostics even under varying operational conditions.

Asked October 16, 2025
Question:
What maintenance tasks can be performed with the Cobra II?
Answer:

Technicians can perform propeller balancing, main and tail rotor tracking, vibration surveys, and spectrum analysis using the Cobra II. It supports both single- and dual-channel vibration analysis for comprehensive aircraft diagnostics, streamlining multiple maintenance procedures into one device.

Asked October 16, 2025
Question:
How does the Cobra II analyzer improve flight safety?
Answer:

By identifying imbalance, misalignment, and vibration anomalies early, the Cobra II Analyzer helps prevent component wear and potential in-flight issues. Regular use during scheduled maintenance improves operational safety and enhances passenger comfort by reducing vibration levels.

Asked October 16, 2025