aerosensor testing
Out-back testing protocol
This testing is used when a track is not available.Road selection criteria
Select a stretch of road, or smooth paved track with the following characteristics:- Traffic: Minimal traffic is best. Aim for fewer than 2 cars per direction per run.
- Length: Road should allow 600–1000m of cycling at target speed.
- Curvature: Gentle bends are fine, but avoid sections requiring braking or leaning >20°.
Run protocol
Before starting, ensure:- ACS app settings are correct, and power meter is calibrated.
- Aerosensor ConnectIQ app is running on your Garmin.
- Start Activity
- With the bike stationary, press Start/Stop button on your Garmin.
- Border changes red → green means FIT file is recording.
- Accelerate to Speed
- Aim for your target speed, with “Valid speed min” set just below it.
- Get into position before reaching this speed.
- Around 5 seconds after hitting valid speed, Garmin beeps to acknowledge new lap.
- Lap starts when speed threshold is reached.
- Ride in Position (600–1000m)
- Maintain a steady speed.
- Brake Hard to End Lap
- Lap automatically ends when deceleration exceeds “Valid brake deceleration”.
- The last ~5 seconds of data are excluded from CdA calculation (“Braking time offset”).
- Turn Around
- Turnaround must take at least 5 seconds to ensure proper lap separation.
- Repeat Steps 1–4 in the Opposite Direction
- This forms your "Back" lap after completing the "Out" lap.
- Complete 3 Out-Back Pairs
- Three out-back pairs are recommended because:
- They ensure repeatability of results.
- More data improves accuracy, balancing time vs. quality.
- End the Session
- After the last Back lap, stop the bike, then press Start/Stop button on Garmin.
