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-   -   Mercury Redstone 1:52 (http://www.oldrocketforum.com/showthread.php?t=17924)

timorley 05-24-2019 09:12 PM

Mercury Redstone 1:52
 
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I've maybe gone 3D printer crazy and I've got 3 projects going at once! While browsing Thingiverse I came across files for a "Mercury Capsule for Polecat 5.5" Redstone".

https://www.thingiverse.com/thing:3285664

I happend to have a length of Semroc Centuri ST-13 (Estes BT-56) sitting in front of me and thought, why not!

I started this project when I got my first 3D printer, I printed the capsule, but I just couldn't get the tower to print. After a dozen or so tries I gave up and shelved it. Today I was sitting at my desk getting ready to work on the Pershing when I looked at the capsule sitting there and thought I'd try the tower again with my new printer. Same results, disaster. But I kept trying, then I hit the right settings combination in the slicing program, and success! So I went ahead and printed the rest of the parts. This is scaled down to 24.25% of the Polecat version. I'm using PETG again, so I think the tower may be strong enough for flight, worst case, I get to print another one!

timorley 05-24-2019 09:16 PM

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I started to assemble the capsule and realized the black capsule parts printed with the older printer just were not as good as the red parts, so I printed the black capsule parts again with the new printer.

timorley 05-24-2019 09:21 PM

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I think this really turned out pretty good. Now to cut out some fins, install an engine mount, launch lug, and add some paint and decals.

ghrocketman 05-24-2019 10:03 PM

Looks GREAT !

timorley 05-25-2019 05:39 PM

I have absolutely no idea where I came up with this being 1:75 scale, it's more like 1:52. :chuckle:

timorley 05-26-2019 04:38 PM

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I decided to try my hand at making a 3D part and created a fin can for it. I didn't do a lot of detail, did about what I would have done in balsa. And it certainly isn't scale, but it turned out pretty good I think. The fin can weighs 15 grams and the capsule weighs 13 grams.

timorley 05-27-2019 07:22 AM

US Army Redstone Missile
 
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While I was searching for the Mercury Redstone scale date, I was reminded of the US Army Redstone Missile. I used the scale data I came across and created a 3D model of a nose cone in the same 1:52 scale for an ST-16/BT-56 tube size. I printed a test cone overnight, it turned out pretty good, although I have some layering issues in my model I need to address, there are some print imperfections on the back side, so not there yet. Not counting the shoulder, the cone is about 6.4 inches tall and weighs 15 grams.

mojo1986 05-27-2019 09:44 AM

That looks excellent! That cone is similar in shape to the Pershing cone. Another project?

timorley 05-27-2019 11:56 AM

Quote:
Originally Posted by mojo1986
That looks excellent! That cone is similar in shape to the Pershing cone. Another project?


Thanks! Yeah, kinda looks that way.

timorley 06-18-2019 12:02 PM

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I posted the Redstone Missile cone on Thingiverse.

https://www.thingiverse.com/thing:3698981


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