Gyraline VS a $50,000 machine? Yes please.
Gyraline can measure your alignment just like the big boys — except now you can do it anywhere in 30 seconds.
The study at a glance:
Executive Summary
In the automotive industry, achieving precise and repeatable wheel alignment is critical for optimizing vehicle performance, stability, and tire wear. Traditional methods can be time-consuming and require expensive, stationary equipment.
This study analyzes the Gyraline Platform, an innovative handheld tool designed to quickly measure wheel alignments in the field. We will specifically look at the similarity and precision of Gyraline’s camber and total toe measurements when compared to an industry-standard stationary alignment machine.
Through rigorous testing, the precision of the Gyraline Platform has been characterized by a measurement range of +/- 0.020° at a 99% confidence interval for total toe measurements. This is well within the most stringent industry resolution of +/- 0.050° and is similar to tools currently trusted in the industry.
This study was conducted in a controlled environment by a professional, strictly adhering to the procedures outlined by both device manufacturers. Results are not guaranteed and may vary due to numerous factors.
Purpose of Study
Traditionally, wheel alignment measurements are conducted on large, stationary machines that take up an entire repair bay. They do not allow for mobile operation and have extended setup times. Gyraline is a newly developed mobile alignment platform that uses a specially cased handheld device and its onboard sensors.
This study measures the repeatability and precision for total toe and camber of the Gyraline Platform alongside that of a calibrated, industry-standard alignment machine.
Methodology and Testing
The vehicle used was a 2023 model with ~7,900 miles. The stationary alignment machine was a recently calibrated unit at an OEM dealership. Its sensors were removed and re-calibrated for each of the ten trials. The Gyraline Platform tested was the public release of Gyraline DIY 2.00 running on a Gyraline-calibrated Apple iPhone 13 Pro, installed in a production “Gyraliner DIY” encasement.
| Step | Procedure |
|---|---|
| 1 | Load vehicle onto the stationary alignment machine rack |
| 2 | Raise machine into alignment position |
| 3 | Roll vehicle forward to capture rolling compensation |
| 4 | Install stationary machine sensors |
| 5 | Conduct rolling compensation per machine interface |
| 6 | Center steering and print measurement results |
| 7 | Remove stationary machine sensors; do not move the car |
| 8 | Measure total toe and camber with Gyraline DIY |
| 9 | Roll vehicle back to compensation start position |
| 10 | Repeat steps 3 - 9 for ten datasets each |
Results & Analysis
Total Toe
Averaged and corrected for one outlier, the stationary machine measured the front axle total toe at 0.36°, while Gyraline measured 0.35°. The stationary machine’s range at a 99% confidence interval was +/- 0.016°; Gyraline’s was +/- 0.020°. The measurement values of both devices overlap within each other's range.
Camber
Averaged values for camber showed a maximum difference of 0.18° on a single wheel between the two systems. The stationary alignment machine range at a 99% confidence interval was found to be +/- 0.056°, while Gyraline DIY’s was +/- 0.105°.
Conclusion
Given the typical manufacturer specification range of 0.20° for toe and 1.00° for camber, Gyraline is able to measure and display wheel alignment data with a high enough precision to determine whether a vehicle’s wheel alignment is within factory specification. Further, this precision is well within the most stringent industry-dictated critical resolution of +/- 0.050° for toe.
This study was conducted in a controlled environment by a professional, strictly adhering to the procedures outlined by both device manufacturers. Results are not guaranteed and may vary due to numerous factors.
Raw Data Tables
