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  #1  
Old 11-20-2019, 08:20 AM
Jack Hydrazine Jack Hydrazine is offline
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Default Estes BNC-55AC/PNC-55AC Nose Cone (Cherokee-D/E)

I have designed a copy of the BNC-55AC and PNC-55AC nose cones that the Estes Arcas (kit #K-26 or #1226), Estes Cherokee-D (kit# K-47 or #1247), and Estes Cherokee-E (kit #2408) model rocket kits uses that you can download for free from Thingiverse and print. Enjoy!

https://www.thingiverse.com/thing:3988427
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  #2  
Old 11-20-2019, 11:45 AM
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timorley timorley is offline
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Nice! Thanks!
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Old 11-20-2019, 08:57 PM
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teflonrocketry1 teflonrocketry1 is offline
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Thanks! I am working on printing one tonight!
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Old 11-20-2019, 09:56 PM
Jack Hydrazine Jack Hydrazine is offline
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Let me know what you think of it after it is printed.
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Old 11-20-2019, 10:08 PM
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Good for cloning these:

1247 Cherokee D
1270 Nike-X
1290 Sky Raider
1302 CC Express
1360 Tartar
1924 Defender
1972 Bullpup 12D
2149 SM-3 Seahawk
2151 Big Dawg
2153 AIM-120 AMRAAM
2184 Meteor Masher
7000 Bullpup 12D
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Old 11-20-2019, 11:02 PM
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ghrocketman ghrocketman is offline
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I believe the "Sea Strike D" two stager used that cone also.
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Old 11-21-2019, 08:40 AM
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5x7 5x7 is offline
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Quote:
Originally Posted by ghrocketman
I believe the "Sea Strike D" two stager used that cone also.


Thatís the 55AO
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Old 11-21-2019, 10:16 AM
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A couple of the later Centuri kits used this nose cone also. The Magnum Hornet, issued in 1980, and the Magnum Sprint, issued in 1982. Could be another or so, but those are the only two that pop to mind right now. Oh, and I think the Magnum SAM-3 also.

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Old 11-21-2019, 05:43 PM
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teflonrocketry1 teflonrocketry1 is offline
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Quote:
Originally Posted by Jack Hydrazine
Let me know what you think of it after it is printed.


I printed the PNC-55AC nose cone and cap using 4 thickness (0.12mm each) of ABS at 0.2mm layer height and it came out great, see attached picture of the 3D print next to my 40+ year old Cherokee D. The cap fits nicely into the nose cone shoulder and is a perfect fit for gluing and use of a screw eye (I used 6 top layers for the prints). The cone fits nicely into BT-55 tubing, it might need a little tape shimming before flight. I printed the file as is and the outer dimension of the cone measures 1.31 inches as per the caliper I bought from Harbor Freight. I typically increase the size of my prints by 1% to compensate for the shrinkage of ABS plastic but did not do that for these prints.
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  #10  
Old 11-23-2019, 09:57 PM
Jack Hydrazine Jack Hydrazine is offline
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Looks awesome! How did the cap fit?
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