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- Feb 9, 2022
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Anycubic Kobra 2 Max sale for $429I might like a 3D printer that could do that well. Do you mind divelging what you bought? I'm a complete n00b, but I'm trying to learn and evaluate!
Anycubic Kobra 2 Max sale for $429I might like a 3D printer that could do that well. Do you mind divelging what you bought? I'm a complete n00b, but I'm trying to learn and evaluate!
Hey Frank - thanks for watching this thread. 10# is my goal for a first build like this - I know it will get lighter as I figure stuff out. Think of this build as the "Enterprise" test shuttle before anything else. I have to figure out the autopilot, the RC features - like gear doors, elevons, rudder and the overall structure. This version may not fly, but it's necessary for me to figure out the overall structure, how it connects to the External Tank. How it would separate from the ET and the support points on the ET itself. The body flap won't be functional, and I agree that it won't impact performance at this scale. One of the reasons I'm going all out on the mold process is to figure out how to make this lighter as I go.Why are you thinking it needs to be so heavy at this scale, especially unpowered? Comparing to Dave Shaefers ME-163 that is fiberglass and also has the tail weight of an I-161 it has to balast for which is about 5# rtf with motor, 60" span. Also, I think making the body flap movable is not really a benefit, I think it was mostly effective during re-entry for pitch control, not as much at normal flight speeds, could save some tail weight there..
Frank
You got a picture of the printer itself?Shiny new 3d printer and molds
Okay, so it's been a minute, but finally got my new 3D printer - an AnyCubic Kobra 2 Max with a huge build volume (450mmx450mmx500mm). It's super-fast and has a ton of great features. So, I started printing the molds for the 1/26th scale orbiter. Here's a week's worth of printing - burned through 8 reels of PLA (normal spool). The bottom molds, rear fuselage and rudder are done. Currenty working on the wings and the top of the fuselage.
Here's the Fusion 360 model with the mold blocks (see my thread above about how to subtract the tool from the mold).
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I am very very jealous…
Is the yellow stuff, the honey comb stuff you use to make composts stronger?Shuttle: bottom fuselage shell
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YepIs the yellow stuff, the honey comb stuff you use to make composts stronger?
Tom - would love to see a picture of the finished V2 is you have one. I used a nose cone on my Jayhawk project that has a rounded off nose - it's getting more and more difficult to buy nosecones that are scale for body tubes > 5". Thanks for your encouragement. This is a crazy project.This is true master-level work, I am in awe. And to think that now almost 4 years ago, you pointed out to newbie me that the V2 had a pointed nose cone, not rounded as in the Estes kit. I couldn't "unsee" that - and my brother-in-law thinks, "Boy, people would be really impressed if they saw you fixed that!" The V2 did turn out very nice, though, and I am watching and hoping you have an even greater level of success with this project. Go, man, go!
Sam, I fouled up. It was another user "samb" that that pointed out the pointed nose cone to me and showed me his. But anyway, the finished rocket is here.Tom - would love to see a picture of the finished V2 is you have one. I used a nose cone on my Jayhawk project that has a rounded off nose - it's getting more and more difficult to buy nosecones that are scale for body tubes > 5". Thanks for your encouragement. This is a crazy project.
I had found those videos a few years back as a fairly new BAR and was quite in awe! Glad to meet the brains behind it all. Now I'd love a really big, detailed, 5-5-1 Saturn V (who wouldn't) but the special challenges of the Shuttle, the weight and drag asymmetries, plus adding in RC aircraft capability - successfully - AND inspiring a bunch of high schoolers along the way - I could hope for 1/10th the legacy. Good on you! (I never could get that left-hand, right hand swap down when the thing was coming at me...).I just stumbled on this project. I LOVE seeing flying shuttle models. I search then out every few years. Coincidentally this is the 30th anniversary year of the 1/40 one I designed and flew while in Grad school. Readers here may have seen the videos on YouTube. Its my channel. Here is a link to the Sport Rocketry article we wrote and links to the videos. We always talked about building a 1/20 orbiter to fly. I even have a set of my plans scaled up somewhere BTW, the stack weighed a little over 6 pounds at liftoff. Two RC receivers, two batteries, two servos, 2 timers, 4 electronic Flash bulb charges. No fins. H70W.
http://www.spacecraftreplicas.com/shuttle
http://www.spacecraftreplicas.com/shuttle/history
Like Frank (burkefj) I also have hundreds of flights on all sizes of shuttles. I stay active in RC modeling and have recently flown shuttle models. I'll try to check back here soon but let me know if you have any questions or need any help. You can email me also. The website is pretty old but the second email listed is good and I check it daily.
Scott
Hi Scott - great to make your acquittance. Your flights and work on the shuttle stack are amazing (and legendary) - and, boy, do I have a lot of questions for you...I just stumbled on this project. I LOVE seeing flying shuttle models. I search then out every few years. Coincidentally this is the 30th anniversary year of the 1/40 one I designed and flew while in Grad school. Readers here may have seen the videos on YouTube. Its my channel. Here is a link to the Sport Rocketry article we wrote and links to the videos. We always talked about building a 1/20 orbiter to fly. I even have a set of my plans scaled up somewhere BTW, the stack weighed a little over 6 pounds at liftoff. Two RC receivers, two batteries, two servos, 2 timers, 4 electronic Flash bulb charges. No fins. H70W.
http://www.spacecraftreplicas.com/shuttle
http://www.spacecraftreplicas.com/shuttle/history
Like Frank (burkefj) I also have hundreds of flights on all sizes of shuttles. I stay active in RC modeling and have recently flown shuttle models. I'll try to check back here soon but let me know if you have any questions or need any help. You can email me also. The website is pretty old but the second email listed is good and I check it daily.
Scott
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