05-08-2019, 02:08 PM
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Dazed and Confused
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Join Date: Mar 2005
Location: TN
Posts: 11,624
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Quote:
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Originally Posted by timorley
I'm wondering where I'll wind up in total weight for the final rocket. The Estes catalog lists the Pershing 1A at 11.5 ounces (326.03 grams). Anybody have any real world weights for a finished Pershing? My BT-101 tube for this project weighs 88 grams. I'm going to set this up to accept the Estes E12-4, so I know that will require more nose weight than a D12-3 would. I believe there is roughly a 17.1 gram difference between a D12-3 and the E12-4 according to NAR data sheets.
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If I don't forget, I'll weigh mine tonight. It's significantly underpowered with a D12-3. It's flight fishtailed and was considerably lower than my Centuri Saturn V, iirc. It was bad enough that I flew it one time and retired it immediately after. Back in those days I didn't fill spirals or prime under dark opaque paints like olive drab or artillery green. There was no heavy finishing work. The nose was just that heavy.
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I love sanding. 
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