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BSNW said:
My Wife got me this little kit for Christmas...launches on the mighty A10. It was a fun build. Anybody know how much weight I would need in the nose if I put a 18mm motor mount and went with a C6?....I bet a lot!!
Anyway...I also cant wait to launch this little guy...

View attachment 403223
Click to expand...

It’s a fun little kit! Looks great!
 
Nytrunner said:
Love the look. Is it stable with those massive upswept fins
Click to expand...

To be honest, I’m not sure. We built it for the challenge of replicating the resistance logo...I just haven’t given it the swing test yet. I imagine that it’s not very stable but my kids love it all the same. If I can tweak it for flight, that will be a win! [emoji6]

I’ll do some testing over the weekend and let you know [emoji1360]
 
BSNW said:
So I thought I would toss in a "Work in Progress" too! I know I can be long winded, so I will try and be brief (HA!).
So, you may know with my SLV and Geo-Sat build threads...that I like "real world" looking rockets. I hope Estes makes more of them. So with that in mind, I made this. It is a smaller version of one I made from a Pro-Series II Ventris.

It is based on BT-55 to BT60 tubes and the side pods are BT-20. The nose and transition are 3D printed from The Geo-Sat kit (Teflon-Rocketry on YORF) The side pod cones and nozzles are 3D printed from the same guy.

Estes SO could make kits like this with little effort. IMO I think rockets like this...would make a fun kits. As you can see I am continuing with my "zipper top" design. If the top section (separation point) zippers or is damaged, I can simply pull it off and paint a new section and replace. The fake conduits are balsa strips. The little hole is a vent hole between the centering rings. This is currently the first coat of primer...I have to sand-then do second prime-sand-tack-then paint...My big issue now is finding some decals that will work on this.....I think a D12 will work nicely on this.
Andrew

View attachment 403368

View attachment 403369

View attachment 403370

View attachment 403371

View attachment 403372
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I really like that! That is a very cool-looking rocket.

I'm a huge fan of the SLV. I still have plans to upscale one.
 
These don't qualify as "projects" but they were fun to throw together! I find the fin can on them kind of intriguing. Neat little design!

I'd say I had a good 45 minutes into the two of them, lol.20200112_175332.jpg
 
BSNW said:
My Wife got me this little kit for Christmas...launches on the mighty A10. It was a fun build. Anybody know how much weight I would need in the nose if I put a 18mm motor mount and went with a C6?....I bet a lot!!
Anyway...I also cant wait to launch this little guy...

View attachment 403223
Click to expand...
Just add the difference between the two. An A3-4t weighs 7.6 grams. A C6-5 weighs 25.8 grams. So 18.2 grams to start everything else being equal weight add about 18 grams or a little more.
I made plywood fins and a 24mm mount so I added more.
Another sure fire way is get the CG from the stock built one. Mark this location on the modded body tube. Build it like you want and add required nose weight until you get the CG where it meets the mark. Get it?
 
John Taylor said:
Just add the difference between the two. An A3-4t weighs 7.6 grams. A C6-5 weighs 25.8 grams. So 18.2 grams to start everything else being equal weight add about 18 grams or a little more.
I made plywood fins and a 24mm mount so I added more.
Another sure fire way is get the CG from the stock built one. Mark this location on the modded body tube. Build it like you want and add required nose weight until you get the CG where it meets the mark. Get it?
Click to expand...

Thanks! I got another kit and will try it!
Fun times!
Andrew
 
Tyler P said:
I really like that! That is a very cool-looking rocket.

I'm a huge fan of the SLV. I still have plans to upscale one.
Click to expand...

Thanks Tyler. I can send you plans if you want. I will post photos when done.
Andrew
 
Wm Reid said:
To be honest, I’m not sure. We built it for the challenge of replicating the resistance logo...I just haven’t given it the swing test yet. I imagine that it’s not very stable but my kids love it all the same. If I can tweak it for flight, that will be a win! [emoji6]

I’ll do some testing over the weekend and let you know [emoji1360]
Click to expand...
The big upswept fins don't look like a problem to me so much as the short tube. If it doesn't test good, try extending the tube before adding nose weight. Then put it in the air!
 
Just finished this one 2 weeks ago and flew it at our last launch on an I280 :)
Yup, that's a 38mm minimum diameter Star Orbiter made from blue tube and G10.
Was supposed to hit Mach 1.3, but only got to 1143 fps due to coning during the first half of the burn.
IMG_20200104_105833482.jpg
IMG_20200106_121730.jpg
 
Brian H. said:
Yup, that's a 38mm minimum diameter Star Orbiter made from blue tube and G10.
Click to expand...

Maybe you should call that one "Orbital Star"

Did you set your launch site environmentals and account for temperature when figuring the flight's Mach actual?
 
Nytrunner said:
Maybe you should call that one "Orbital Star"

Did you set your launch site environmentals and account for temperature when figuring the flight's Mach actual?
Click to expand...
Absolutely. Accounting for temp. Mach was just shy of 1100fps.
Weather was perfect, dead calm, but the first 1000' it experienced some serious coning, the straightened out for the rest of the flight.
As you can see in this pic, after the last wiggle, it flew true.
Screenshot_20200106-121435.png
 
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jqavins said:
The big upswept fins don't look like a problem to me so much as the short tube. If it doesn't test good, try extending the tube before adding nose weight. Then put it in the air!
Click to expand...

Great idea! Thanks
 
My "most recently completed project", was last summer. A few other models made for NARAM but this was what I consider a project.

tIP5IR4.jpg


https://www.rocketryforum.com/threads/mars-lander-rocket-quadcopter-project.151995/

Have had to put other things on hold due to a home makeover at the place I live, that'll be going on the next few months, affecting the workshop area too (flooring replacement, painting, etc.). When I do get back to building, one of the things I need to do it repair the Mars Lander Quad, because it had another boost crash, at NARAM-61. I think it "simply" went unstable so it'll be getting some noseweight added and also an aerodynamic tweak to fix a contributing factor to random instability.
 
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