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JulianEdgar · 12-13-2020, 12:34 AM

Unfortunately, coastdown tests are, in my experience, completely unreliable.

To test the technique, do multiple windows up / windows down coastdowns and ensure that the averaged results show a major increase in drag with the windows down.

12-13-2020, 12:34 AM	#4 (permalink)
JulianEdgar Banned Join Date: Nov 2017 Location: Australia Posts: 2,060 Thanks: 107 Thanked 1,605 Times in 1,136 Posts	Unfortunately, coastdown tests are, in my experience, completely unreliable. To test the technique, do multiple windows up / windows down coastdowns and ensure that the averaged results show a major increase in drag with the windows down.