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#1040 by roma847 on 03 Sep, 2016 15:10
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#1041 by roma847 on 03 Sep, 2016 15:11
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Hello everybody,
it's just a small mistake, but nobody has noticed it.
Only upon closer inspection of the image I have noticed two things in retrospect which require correction.
Firstly, one can clearly see that the orientation of the nipple (red) does not match with the intended installation position of the outlet on the 24'' ring line (green),
what has to be initially escaped me out of overeagerness.
And on the other hand can be recognized from this photo that the bow is rounded rather like a crooked stick and has a larger opening angle than the previous.
Accordingly, the rounding starts directly above the connection point on the ring line and not only after the vertical ascent like at my prototype.
Source: NASA
Since that is not so good visible in some photos due to the perspective distortion, I have twisted the following panorama image as long as until the best direct view of the two outlets has revealed, which is similar to the previous image.
Source: NASA
Therefore, new outlets were needed with greater rounding, on their highest points the nipples were inserted,
what looks much better now.
Here once more the comparison of the outlets, whereas the two new outlets (left) have their clamping rings already.
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#1042 by roma847 on 03 Sep, 2016 15:30
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Hello everybody,
and now to the next step, the adaptation of the nozzle tube (Ø 2,0 mm) to the ring line (Ø 4,0 mm).
For this purpose, the tube was separated after the bend at the TSM corner because there the connecting piece to the ring line starts, which was bent from a rod (Ø 2,5 mm).
To align the course of the parts better before the final bonding, I have drilled the parts with Ø 0,5 mm and then inserted appropriate connection rods.
This allows plug together the strand, whereby the test-fitting on the MLP is facilitated and any necessary length corrections are possible.
And only when everything fits, the parts are then glued together.
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#1043 by the_other_Doug on 04 Sep, 2016 00:42
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Thanks Pete for your nice words,
I also can't log into ARC Forums with Google Chrome. I have informed the admins already three days ago, but so far no one has replied, obviously nobody feels responsible for security issues, that's an evidence of incapacity.
BTW, but with MS Internet Explorer one can log in, no problem.
Hi, Manfred!
Sorry, been a little distracted by this pesky Falcon 9 explosion for a few days, it's taken me some time to get back to my favorite thread.
I wanted to note (and I reported this to our NSF admins when it happened) that, again using Chrome, there was a period of a day or two, perhaps as much as a month ago, when I wasn't able to open your posts here, on NSF. I was flat forbidden to open the pages, with the message that the ARC Forum website was unsafe. Interesting, since it didn't look like your images were linking to that forum (though they could be in the background, where I can't see it happening).
It only happened for a little more than a day, and I was indeed using Chrome on Windows 10 at the time. Not having gone to those forums independently, I can't report on their direct behavior.
I just added this in case you wanted to let the ARC admins know this happened just via linked images, apparently.
BTW, as always, great work! I am REALLY looking forward to seeing the pad once it's done. You do realize you will need to build a full LC39 model, complete with poured concrete, RSS, flame trench etc., don't you? I'm looking forward to seeing what you use to properly texture the lava brick in the flame trench...
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#1044 by Ronpur50 on 04 Sep, 2016 02:12
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For what it is worth, ARC Forum sets off my Advast! every time I go to it. Weird.
But, I am floored that you found this tiny little curve was slightly off, Manfred! You just floor me every time with your updates! -
#1045 by roma847 on 04 Sep, 2016 12:52
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Hello Doug and Ron,
it's a pity that you also have problems with Google Chrome's security warnings.
BTW, surely you will have noticed my preference for emoticons, and that's the reason why Google is triggering a phishing warning on all sites of my earlier posts where I have used ARC emoticons occasionally.
Because this is very frustrating for me and all the other guys, I have begun to remove or replace all these ARC emoticons, backwards in my thread - site by site, but this is a convict labour, which is very time consuming.
And so I have corrected half of my thread meanwhile, and the other half I will also still manage.
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#1046 by roma847 on 04 Sep, 2016 15:44
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Thanks Doug for your nice words.Quote
BTW, as always, great work! I am REALLY looking forward to seeing the pad once it's done. You do realize you will need to build a full LC39 model, complete with poured concrete, RSS, flame trench etc., don't you? I'm looking forward to seeing what you use to properly texture the lava brick in the flame trench...
Yep, I'm going to build a diorama of the entire Launch Complex 39A, consisting of FSS and RSS, with Flame Trench, North Bridge as well as other Service Structures and Interface Platforms.
But the biggest challenge will be the lighting,
with estimated 300 lamps. 
Source: retrospaceimages.com (STS-6)
I hope that my dream will come true one day ...
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#1047 by roma847 on 04 Sep, 2016 15:48
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Hello everybody,
yeah, my solution with the plugged-together-strand has actually paid for itself well.
And this strand I've tried on on the MLP, initially with the dummy TSM, because this is much simpler than with the unhandy real TSM. And lo and behold, a slight shortening of the intermediate piece (Ø 2,5 mm) was necessary actually,
so that the nozzle tube just so fits around the TSM corner and does not protrude too far.
But the acid test came then with the real TSM, and as I had feared, it was really quite closely at the corner,
as one can see here,
across the Firex line and below the ladder through, and left past on the angled nozzle.
Good that it was not tighter, but fortunately it has worked well.
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#1048 by Ronpur50 on 04 Sep, 2016 22:11
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Thanks Doug for your nice words.
QuoteBTW, as always, great work! I am REALLY looking forward to seeing the pad once it's done. You do realize you will need to build a full LC39 model, complete with poured concrete, RSS, flame trench etc., don't you? I'm looking forward to seeing what you use to properly texture the lava brick in the flame trench...
Yep, I'm going to build a diorama of the entire Launch Complex 39A, consisting of FSS and RSS, with Flame Trench, North Bridge as well as other Service Structures and Interface Platforms.
But the biggest challenge will be the lighting, with estimated 300 lamps.
Source: retrospaceimages.com (STS-6)
I hope that my dream will come true one day ...
When that day comes, I will be flying over the Atlantic to see this masterpiece! In whatever museum it ends up in. And have a beer with the master builder! -
#1049 by the_other_Doug on 04 Sep, 2016 22:44
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Thanks Doug for your nice words.
QuoteBTW, as always, great work! I am REALLY looking forward to seeing the pad once it's done. You do realize you will need to build a full LC39 model, complete with poured concrete, RSS, flame trench etc., don't you? I'm looking forward to seeing what you use to properly texture the lava brick in the flame trench...
Yep, I'm going to build a diorama of the entire Launch Complex 39A, consisting of FSS and RSS, with Flame Trench, North Bridge as well as other Service Structures and Interface Platforms.
But the biggest challenge will be the lighting, with estimated 300 lamps.
Source: retrospaceimages.com (STS-6)
I hope that my dream will come true one day ...
When that day comes, I will be flying over the Atlantic to see this masterpiece! In whatever museum it ends up in. And have a beer with the master builder!
Seconded! -
#1050 by roma847 on 04 Sep, 2016 23:23
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Thanks my friends,
You're both are cordially invited, first a few cool beers for the thirst
and then a good whiskey ... 
Cheers!
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#1051 by roma847 on 12 Sep, 2016 12:24
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Hi everyone ,
after a little forced break it should now go further.
At first there is still the supplement to the nozzle pipe on LH2 TSM, which now also waiting for the final assembly and mounting to the 24'' ring line, which will follow soon.
And so I would then also have crossed through the maze of SSWS pipes.
After lately the pipe diameters became smaller from 24''-18''-16''-12''- 9'' down to 6 '', it now once again goes back to the thickest 36'' pipes (Ø 6,3 mm), through which both ring lines being supplied with water. The connecting pieces of the feed pipes in the corners of the SRB chambers I had mounted already during bending of the ring lines.
Source: NASA
And now it comes to the lower end of the tube with the connecting piece, for whose items I have again estimated their dimensions.
Source: Troy McClellan
For the construction of this connecting piece I have imagined that I could cut the 6.3 mm tube into short rings, which are subdivide by punched plastic discs (0.15 mm) and finally are glued together.
The more difficult part of the exercise subsequently follows, when these tiny stiffening ribs and corners must be glued all-around, for which I already have an idea,
but what could become quite a tricky fumbling. 
As far as for today.
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#1052 by roma847 on 20 Sep, 2016 22:59
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Hello together,
before the tiny stiffening ribs and corners get their turn, the subdivided construction of the connecting piece must first be put into practice what I first have tried, whereby I proceeded from top to bottom.
This starts up on top with this conical ring (truncated cone), about which I've been thinking.
One possibility would be to file off a circumferential 45° bevel to a 1 mm thick slice (Ø 8,0 mm), what is tedious and not easy if it should become perfectly round, as one can see.
Then one could also imagine a ring of triangular profile (60 °), as can be seen on the tweezers. That is not of Evergreen, but in an architecture shop I have found and was very happy.
But already at the hot bending of the Rings proved the profile to be quite stubbornly because it has aligned to the wood core, as it wanted,
and has also still twisted itself.
Thus, it could not so nice and smoothly be attached to the 36'' feed pipe (Ø 6,3 mm) as I would have liked. As can be seen, namely a gap emerged at the top, what I do not like and still has to be filled somehow.
But then one could also mould the bevel with Apoxie Sculpt. 
So I wanted to try something else and have glued a slightly pre-bent triangular strips all around with CA.
Although this has worked a little better than before, but a smaller gap could not be avoided altogether. 
But with the result I first times contented myself in order to test the further construction. But I definitively did not wanted to glue together the rings and discs in order to make even possibly corrections of segment heights. That's why I have cut small 1 mm base plates of a sprue, which correspond to the inner diameter of the rings.
These plates should serve as a base, on which then the rings are placed loosely without glue.
Then followed the stepwise construction of the connecting piece with the parts, whereby one has to pay attention on a central alignment of the slices and rings.
On the lower tubular segment of the connecting piece sits a double-profile ring, as can be seen in this picture.
Source: Troy McClellan
In order to scratch this ring simplified, I glued an Evergreen strip (0.4 mm x 0.5 mm) around the lower tubular segment.
Then I have put together all the segments, whereby the connecting piece slowly takes its shape.
However the lower ring appears a little too massive, maybe a strip 0.25 mm x 0.5 mm would look something more pleasing from what I could still try,
especially because the connecting piece still can be disassembled.
Now then are still missing the stiffening ribs and corners, which I will make next time.
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#1053 by Davp99 on 22 Sep, 2016 17:02
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" Nailed It" Spot On....
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#1054 by roma847 on 23 Sep, 2016 04:50
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Thanks Dave!
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#1055 by roma847 on 23 Sep, 2016 14:25
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Hello everybody,
as already indicated, the lower ring of the connecting piece I have still slimmed down a bit and by using a thinner strip of 0.25 mm x 0.5 mm.
And in a direct comparison of both rings the optic of the new ring (right) looks something more pleasing, I think so,
but that is as always a matter of taste.
And now followed the upper eight stiffening ribs, for what I have cut short Styrene strips (0.15 mm), which are a little longer in order to assemble and glue easier,
which I have again done with MEK.
But do not worry, I'm not on the wrong path, this should not become a turbine rotor.
And now only the protruding ends had to be carefully cut off with a razor blade from top to bottom,
which has pretty well worked.
However I fear, that the tiny stiffening triangles certainly shall become much more complicated and stressful.
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#1056 by Ronpur50 on 24 Sep, 2016 15:12
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Very clever way to do those.
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#1057 by roma847 on 24 Sep, 2016 16:31
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Thanks Ron for your compliment,
yeah, luckily my idea could successfully be implemented, so as I had imagined.
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#1058 by roma847 on 24 Sep, 2016 22:48
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Hello folks,
to be frightened is not an option, and so I have got down to work, whereby the manufacture of the triangular stiffening ribs happened according to the same recipe for success.
First, I have cut 0.8 mm wide strips of 0.15 mm Styrene and separated from these then 3 mm long sections.
But now came the gluing, and I first tried with the normal Revell glue. But due to the minimal contact zones (0.8 mm x 1 mm) it is quite problematic to establish a sufficiently strong connection. For the fixation of the strips it was initially sufficient, but if they would survive the reducing of the supernatants, I was not sure. 
Therefore I wanted to stabilize the contacts even from both sides with MEK. But that failed because the MEK dissolves the contact point too strong, whereby the strip has lost his footing and tipped over.
At the 2nd attempt I have therefore the strips initially fixed only with CA, but this is quite difficult because the correct location must be found immediately and the seat almost can not be corrected. But with a little practice and a quiet hand then I have succeeded.
And after that, the strips then could be stabilized with MEK yet again.
In this position I then first have cut off the supernatants perpendicular with the razor blade.
And then I have gently cut off the 45° bevels, which to my surprise was actually relatively easily doable.
And now I'm actually quite confident that I will be able to scratch the remaining triangular ribs on both sides of the lower disc also. Upon closer examination one can see, that there are about twice as many ribs as on the middle disc, which are also unevenly distributed over the circumference.
Source: Troy McClellan
And then there are as a further delicacy still three pairs of rectangular ribs (0.8 mm x 1 mm) with holes (Ø 0.2 mm), which are staggered to 120°,
whereupon I cannot probably renounce, or maybe yet? 
Let's see what we can do!
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#1059 by Bob Shaw on 24 Sep, 2016 23:53
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I have made models all my life, but never with the research and dedication which you have shown. However, modelling is but a pastime, and what you are doing here is beyond that: you're exploring the engineering, the history, and the practice. I'm really in awe!
