# \#aero

**URL:** https://community.escapecollective.com/tag/aero/128.md

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## [Aerotesting In what order?](https://community.escapecollective.com/t/aerotesting-in-what-order/1871)

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**Author:** [@user2](https://community.escapecollective.com/u/user2)\
**Replies:** 7\
**Last updated:** [January 6, 2026, 12:44pm UTC](https://community.escapecollective.com/t/aerotesting-in-what-order/1871 "2026-01-06T12:44:29Z")

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Opinions on what to test and in what order. I don’t see much point in testing skinsuits, given their price I’ll get one and commit. I’m thinking that these in this order based on expected gains. helmets Low extension…

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## [Ballpark CdA](https://community.escapecollective.com/t/ballpark-cda/2644)

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**Author:** [@Robert\_Chung](https://community.escapecollective.com/u/Robert_Chung)\
**Replies:** 19\
**Last updated:** [September 10, 2025, 12:59am UTC](https://community.escapecollective.com/t/ballpark-cda/2644 "2025-09-10T00:59:05Z")

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Sometimes it’s useful to get rough estimate of CdA from your power and speed, either as a sanity check or as a baseline starting point for more careful analysis. In those cases, here’s a rough ballpark estimator for CdA …