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ManBird

Calculating freefall time over 119 seconds with a ProTrack

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Your ProTrack will only chart 119 seconds of your freefall, but that doesn't mean it doesn't continue to record other information. To get a fairly accurate estimate of your total freefall time without having to rush out and buy a Neptune, use this formula:

(e - d)/(f * 1.47) = s

e = exit altitude
d = deployment altitude
f = fall rate in MPH (TAS only -- NOT SAS)
s = seconds in freefall

Even if you're off by seconds here and there, you can at least use this to gauge progress in your freefall time.

(edited for a spelling error)
"¯"`-._.-¯) ManBird (¯-._.-´"¯"

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Actually, distance is all that matters to you and those of you who feel that way. I love travelling very long distances in my S3, but at the same dive derive my greatest pleasure from technical flocking, something that BASE guys don't do a lot of.

While I agree that "hang time" is not the most important thing, if it were not important to a niche then there would not be a "minute man" listing on the BirdMan site for BASE flilghts.

Chuck

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