I think a 4 second delay seems a trifle short. I would either use longer Kevlar only or combination of Kevlar and tubular nylon (my preference due to stretch of nylon). If you use elastic you will replace it often and it has very little strength compared to either Kevlar or TN.
[emoji1010] Steve Shannon [emoji1010]
I was concerned about the delay also so I'm hoping OR is correct and the weight of the rocket is low enough it slows down enough.
Me thinks I'll run with stretchy stuff though. The chute will remain on the Kevlar and I'll add an additional third to the length of it with stretchy.
...The crummy estes parasheet ripped away from the shrouds rending the bird into free fall.
...My build method proved on point. I need a scale. Estes chutes are only reliable in LPR, or under near perfect MPR conditions.
When you launch a near high power motor in a rocket with a low power recovery system, something's gona give.
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