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Author Topic: U.S.S. Nautilus scratch build  (Read 28835 times)

Dr.Schmidt

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Re: U.S.S. Nautilus scratch build
« Reply #75 on: August 30, 2015, 01:20:06 PM »

The first segment of the brass deck is painted and installed. The hatch is a cast of resin and the hand wheel is photo-etched:





All masts are assembled and tentatively installed. In the end only a few will end up extracted:





As expected, the props look awesome:

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ballastanksian

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Re: U.S.S. Nautilus scratch build
« Reply #76 on: August 30, 2015, 07:05:37 PM »

All of the model is awesome Dr!
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Dr.Schmidt

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Re: U.S.S. Nautilus scratch build
« Reply #77 on: September 02, 2015, 07:36:12 PM »

On we go....second deck segment:



Sail numbers (decals) with weathering:







Boat name and draught marks - again decals:

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ballastanksian

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Re: U.S.S. Nautilus scratch build
« Reply #78 on: September 02, 2015, 10:23:11 PM »

Lovely work Dr. You must be nearly ready for a sail?
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Dr.Schmidt

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Re: U.S.S. Nautilus scratch build
« Reply #79 on: September 06, 2015, 06:29:46 PM »

The work on the outside of the boat approaches its preliminary  end. The sail is pretty much done. The masts are installed, painted and the whip-antennas are mounted as well:







The bow planes are finally installed in the still controversial v-position. The bow segment of the photo-etched deck will only be installed after the boat is trimmed to allow access to the bow for additional ballast/foam for trimming:

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ballastanksian

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Re: U.S.S. Nautilus scratch build
« Reply #80 on: September 06, 2015, 07:34:46 PM »

Why controversial Dr? That sail does look good even with the pokey out bits retracted.
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Dr.Schmidt

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Re: U.S.S. Nautilus scratch build
« Reply #81 on: September 06, 2015, 09:34:44 PM »

On a US forum some claimed that the bow planes should be horizontal and not v-shaped. I think the v position is right, but I lack hard evidence to confirm it.
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eddiesolo

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Re: U.S.S. Nautilus scratch build
« Reply #82 on: September 06, 2015, 10:02:13 PM »

Amazing work, loved reading through this, great weathering and an outstanding build so far.


Si:)
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spooksgone

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Re: U.S.S. Nautilus scratch build
« Reply #83 on: September 08, 2015, 02:33:38 PM »

Stunning! :-))
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Dr.Schmidt

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Re: U.S.S. Nautilus scratch build
« Reply #84 on: September 19, 2015, 12:54:22 PM »

Hven't been lazy, but as a model looks just the same after being painted with clear coat, I skipped the photos here. Now the RC equipment. And because of the detailed planning and the good tools, that works out quite nicely. Drive train, servos and pressure switch are installed:







Der Druckschalter sitzt in einer Plexiglas-Klammer und passt saugend an seinen Platz:



The drive trains are installed. Everything is quite "heavy duty". The Rabösch couplings can move along the shaft direction so that there are no unwanted forces due to differential thermal expansion of different components.



The servo linkages are sealed with rubber bellows. The additional stuffing box is there for the case that the antenna has to be route outside the pressure hull:



The linkages at the planes are an extremely tight fit. No space to waste. Only doable with self-made aids and tools, e.g. an extended hex-wrench:



And as soon as the lid is closed, no sign left of the finger acrobatics involved:

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TailUK

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Re: U.S.S. Nautilus scratch build
« Reply #85 on: September 19, 2015, 01:43:59 PM »

Amazing work!
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Dr.Schmidt

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Re: U.S.S. Nautilus scratch build
« Reply #86 on: September 27, 2015, 02:02:10 PM »

O.K., I have a week full of soldering and cabling behind me. Everything is installed! A little overview:



In the front the 4S 4100er LiFePO main battery and a  1600er LiFePo receiver battery:



In the back the servos, pressure sensor, motors and piston tank control with Hall sensor:



All cables are tightly secured so that they cannot be shreddered by the outrunners:







The brushless peed controllers fit next or into the piston tank control: 



In the front the Corona receiver and the cable harness. Eberything with ferrite cored for interference suppression:



By now everything sis also programmed and calibrated. Seems like it's almost ready for the first wet tests....
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warspite

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Re: U.S.S. Nautilus scratch build
« Reply #87 on: September 27, 2015, 10:02:23 PM »

 :-)) , love it, looks like something called the genesis project - just watch that khan doesn't try to steal it  %)
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Dr.Schmidt

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Re: U.S.S. Nautilus scratch build
« Reply #88 on: September 27, 2015, 11:16:38 PM »

I alway thought that an airport would be an interesting place to carry the boat around  ok2
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ballastanksian

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Re: U.S.S. Nautilus scratch build
« Reply #89 on: September 28, 2015, 11:31:26 AM »

I too thought that the system. if sprayed light grey and white would look like a space craft! Excellent work squozing everything in with out the need for brute force <*<
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Dr.Schmidt

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Re: U.S.S. Nautilus scratch build
« Reply #90 on: September 28, 2015, 01:37:33 PM »

That's the advantage if one make a good drwaing beforehand. I knew that the conponents would fit. Then it's just a matter of routing the cables.
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Dr.Schmidt

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Re: U.S.S. Nautilus scratch build
« Reply #91 on: November 21, 2015, 05:36:00 PM »

The first test showed, that with the original position of the balast tank, there was no way of getting the boat trimmed right. So I had to rebuild the inner structure. Did it and now the boat is trimmed well. Nevertheless the waterline is about 1,5 cm too high. That issue can only be solved with a wtc and a new boat. Well, that's why I have made molds.....

Cheers Andreas
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ballastanksian

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Re: U.S.S. Nautilus scratch build
« Reply #92 on: November 21, 2015, 09:55:06 PM »

It is still considerable work to ready another hull :((
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TomHugill

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Re: U.S.S. Nautilus scratch build
« Reply #93 on: November 21, 2015, 11:43:49 PM »

If you feel the need to sell it when you build another.....
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salmon

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Re: U.S.S. Nautilus scratch build
« Reply #94 on: November 22, 2015, 04:11:35 AM »

Any pictures of it in the water!
TomH is right, you need to throw it away, electronics and all, just let me know what night you put it in the trash. I may have a temporary job as a trash collector that night.
Peace,
Tom
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Subculture

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Re: U.S.S. Nautilus scratch build
« Reply #95 on: November 22, 2015, 08:03:32 AM »

Have you considered incorporating a partially aspirated tank in conjunction with the engel piston tank? That would give you the missing cc's.

Or perhaps making a fatter piston tank (looks like you have the space with some mods to the tech rack) if the seals can withstand more internal pressure from the increased displacement. e.g. increasing piston diameter by 10mm would give you almost an extra 25% increase in volume for equivalent tank length.

The tank could also act as a structural item if you wanted to go fatter still.

Dr.Schmidt

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Re: U.S.S. Nautilus scratch build
« Reply #96 on: November 22, 2015, 09:49:34 AM »

What is a partly aspirated tank?

In the moment my approach is a second boat with a wtc.
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Re: U.S.S. Nautilus scratch build
« Reply #97 on: November 22, 2015, 11:23:20 AM »

What I meant was add a second tank, which could wrap around the circumference of the piston tank, although some modification of the engle tank would be required I think.

This would be a vented tank with either a bi-directional water pump. So no additional pressurization inside the boat.

Dr.Schmidt

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Re: U.S.S. Nautilus scratch build
« Reply #98 on: November 25, 2015, 09:13:36 PM »

For trimming I had the front section of the deck off to have access to the bow to attach foam and lead. Now that the boat is trimmed, I put it on and started painting it. Finally the boat comes together:





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ballastanksian

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Re: U.S.S. Nautilus scratch build
« Reply #99 on: November 25, 2015, 09:25:34 PM »

Now thats a fine boat coming on. Lovely Dr.
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