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Estes D.O.M. Nike Needle question
https://forums.rocketshoppe.com/att...achmentid=52397
I believe Buzz posted this a couple of years back. It's been high on my list of Estes D.O.M. birds to build and I finally ordered the parts from eRockets last week. When I went to do the dry fit, I was kinda shocked at how huge it was going to be. The instructions specify BT55 and BT20 full length tubes, but that seems like an awful lot of length. Am I just overthinking this, or is there a chance the BT55 and BT20 were supposed to be cut down some? The drawing kind of suggests that. Any opinions?
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Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc - Starfighter Scorpion Centuri - Mini Dactyl Estes - F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II, Xarconian Cruiser Semroc - Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark |
#2
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Those tube lengths sound about right.
The Estes Nike Ajax kit uses a full length BT-50 sustainer and only a slightly shorter BT-55 booster. I'd use 3 Nike "original" shape fins on the booster instead from the Nike Ajax or 4 Nike Smoke fins instead of what this plan shows.
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When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC ! |
#3
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Step 5 refers to the body tube as a BT20 B. Perhaps there may a .mistake on the BT 55 as well.
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Jeffrey Deem NAR16741 CIA section 527 |
#4
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Quote:
Good catch. Reading would have been a great path for me to follow. 8.65" seems more in line with what I was expecting.
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Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc - Starfighter Scorpion Centuri - Mini Dactyl Estes - F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II, Xarconian Cruiser Semroc - Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark |
#5
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The last catalog that offered a BT20B was 1977 so that fits. BT55 was only available in full length after 1971.I hope that helps
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Jeffrey Deem NAR16741 CIA section 527 |
#6
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Neat design - looking forward to the build!
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Paul If we weren't all crazy, we would go insane - Jimmy Buffett NAR #87246 www.wooshrocketry.org |
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