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  #151  
Old 03-19-2017, 05:30 PM
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That Upscale Beta is really a good one !
18mm or 24mm power ?
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  #152  
Old 03-20-2017, 06:34 AM
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24mm. D12 booster and C11 through E sustainer.

Per DeWalt's request, I'll scan the patterns tonight and post them here.
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  #153  
Old 03-20-2017, 11:45 AM
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Most likely it will have a flight profile very similar to the Astron Omega.
Possibly a bit higher due to the drag-reduction of having the booster fins fitted together on this design.
The last Astron Omega I built, I put "E" length mounts in both the booster and upper stage. I bought some E12-0 motors for the booster, but have not yet flown it.
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  #154  
Old 03-20-2017, 02:59 PM
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Quote:
Originally Posted by Eagle3
It's a scratch built using BT-60 tubes. Cutting all that wood was a pain, but somewhat easier than the original size. Larger pieces are easier to handle and sand.


Well, you make a good point about larger fins. I am also working on a Mini Honest John. Since it's the M50 version, it has smaller fins, and it's a little kit to begin with. Being a glutton for punishment, I am hand sanding the diamond airfoil on the fins. Those fins are so little its hard to hold them still while sanding!
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  #155  
Old 03-20-2017, 06:06 PM
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Looking at this thread for the first time. Wow! THat's a lotta innovative rockets!

Airfoil your fins!
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  #156  
Old 03-20-2017, 07:06 PM
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Per DeWalt's request, here is the fin pattern for the 2.25X upscale. The booster tube is 3.3" long and the sustainer is 19.25. I create a decal file when it gets closer to painting season here in Michigan.
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File Type: pdf Beta Upscale BT-60 Fins.pdf (77.0 KB, 15 views)
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  #157  
Old 03-22-2017, 12:27 PM
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Rocksim file for the Argus IV. The fins are close, but I would just blow up the original plans if you're going to build one yourself.
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File Type: rkt Argus IV.rkt (40.3 KB, 3 views)
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  #158  
Old 03-23-2017, 01:08 PM
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Fantastic - Thank you Buzz !
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  #159  
Old 03-24-2017, 01:17 PM
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Just a tip for the Beta upscale. Just like the regular size Beta, you can be as careful as you want when cutting out the fins, when you go to glue them on they won't mate cleanly without trimming the booster fins here and there.

I glued all the sustainer fins first. The connected the booster tube nad did a test fin of all the booster to sustainer fins to see if any were close. Yay! One was. ^_^ I really didn't have to trim much off the other two to get a good clean fit, but it's worth it to take the time and adjust the fit.
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