I performed aero tests yesterday with the goal to test my current bike setup with 2 helmets and then the same with saddle moved back. I tested each configuration in 3 runs (out and back loop), starting with Aeropod calibration ride (after factory reset and installation of the most recent firmware).
I attached runs recorded by Aeropod to this post. Also a spreadsheet with results read from Isaac.
I need some help from you to understand why I get different CdA values from Aeropod during my field tests and from "Tools->CdA Analysis" function in Isaac and what results I should consider as valid. I see it's not only about the values in Isaac being higher than the ones from Aeropod, but also about missing correlation between those values.
For example for 3 runs within Test 1 (test_1.x_HJC_baseline_setup) I got following CdA values:
- Aeropod CdA: 0,219 -> 0,224 (higher than first run) -> 0,222 (lower than second run, higher than first run)
- Isaac CdA Analysis: 0,240 -> 0,238 (lower than first run) -> 0,249 (significantly higher than the first and second run)