05-24-2019, 08:28 PM
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Lost his Drifter
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Join Date: Mar 2013
Location: Northeast Ohio
Posts: 1,277
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Thanks, Bruce.
2-micron polish on the finish? Really?
The mass of the transition was way off - you specified "filled" polystyrene. I fixed that. Even so, they are way too heavy. I weighed one of the "Eggspress" egg capsules that Estes sold off long ago. I'd override the mass of the nose cone/transition combo to around 28.68 grams. Split the difference between the nose cone and the transition 25/75%, or 7.2/21.5 grams.
Your total mass for all the components of the fin can is very close to the mass of a Maniac fin can that I just measured - a few grams more. Close enough.
I decided to build one of these too, but not the 10-inch long payload bay version.
-W
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-Wolfram v. Kiparski
NAR 28643 - TRA 15520
MTMA Section #606 President
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