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Author Topic: Multipurpose workboat "Viking Energy" 1/50  (Read 5361 times)

mrzippy

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #25 on: May 11, 2020, 09:01:35 am »

Interesting unusual project, 3D drawings outline construction really well !  beautifully presented thank you Ralf.
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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #26 on: May 11, 2020, 07:04:05 pm »

Thank you.


The prominent front bumpers are roughly done.
A sandwich of balsa and plywood and much manual sanding. With the double bumper rubbers it looks quite nice.


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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #27 on: May 12, 2020, 04:59:12 pm »

The both round edge protectors are ready. Back from wood. Front is aluminium. Because I won't be scary about scratches and dents when I really lift an anchor and his chain off the ground (which implied, that it will get a functional winch on deck  %) )

The back protector. Hanging on the wrong side of the boat

a big slot to minimize the weight


The profil of the protector to reach a bit over the deck edge


Et voila

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Ralf

pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #28 on: May 13, 2020, 06:21:38 pm »

Deck is fitted in and the great hatch is done









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Ralf

pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #29 on: May 15, 2020, 09:37:04 pm »

Next step is done. Translating the flat plans of the Deckhouse-Body into 3d via Fusion360 is not an exciting thing but useful for following steps.






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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #30 on: May 16, 2020, 04:22:22 pm »

Yesterday just virtual, now real. The deckhouse-body.  :-)) A lot of filling and sanding will follow  %)

















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Ralf

pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #31 on: May 17, 2020, 08:01:16 pm »

Milling the flanges for the propshafts (gundert complete "power direct drive") and adjust them and the slow-runner brushed motors ( new looking old motors from the pool.



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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #32 on: May 20, 2020, 06:03:58 pm »

The shape of the Hull is now done. Hull is closed and water proofed. The kort nozzles are mounted. Tomorrow the work on the Schilling rudders will start.




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Ralf

RST

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #33 on: May 20, 2020, 08:45:41 pm »

These are intersting boats (more like barges).  The rudders will be interesting.  I have carved them myself arbitrarily and 3-D printed them using a std NACA symmetrical profile for the main body with a triangle added at the end.  Not very scientific!  But with schillings, the stall angle is much higher so supposedly if you have 2 and turn both outwards at a very high angle, they can direct some thrust forwards as a "brake" also which is probably quicker than reversing the thrust.  I will bet on a R/C model as long as they look about right they will work anyway!


Not to steal the thread but attached is my small, 1:48/50 multi cat I started from last year, which I have not seen for months now as can't get back to my apartment!  3-D printed hull, the deck house and wheel house etc. and crane is more traditional build in polystyrene sheet and bits of brass. Both entirely freelance, but so many prototypes nobody can say is too wrong!
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ballastanksian

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #34 on: May 21, 2020, 09:51:28 am »


Tidy work Rolf! You are steaming along with that project.


The crane is fab RST!
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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #35 on: May 21, 2020, 03:48:24 pm »

You are steaming along with that project.
Too much free time with all the isolation :(
@rst:  Nice little tug  :-)) the crane is beautiful detailed  :-)) :-))
-------
Todays work is done. The schilling rudders are roughed up.

I've decided to make them from aluminium because resin printed things are very brittle and just a medium hard bounce can break them.




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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #36 on: May 24, 2020, 03:04:49 pm »

A great lack of enthusiasm for sanding, filling and painting  %) has forced me to solder a power distributor and made a first little testdrive in the pond.
Everything is going  :-)) and happily almost completely noiseless  :-))


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Ralf

Big Ada

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #37 on: May 24, 2020, 05:37:06 pm »

Lovely build, its coming on nicely. :-))

Len.
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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #38 on: May 25, 2020, 08:29:35 pm »

Thank you, Len

----
Some people insisted in a really working Support-Crane on deck. So I've done some things in Fusion360 and the resin printer make me a prototype in a roughly optical scale and pockets for three tiny n20 gearmotors.


Tomorrow we will know if it works ......
P.s:  To compare a pic of the original http://www.landfall.nl/wp-content/uploads/2019/07/VIKING-ENERGY-5.jpeg
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RST

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #39 on: May 25, 2020, 08:49:38 pm »

Wow! I would have put working windscreen wipers and soap wash on the bridge  before a working crane! .....come on, second challenge set! LoL
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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #40 on: May 26, 2020, 06:24:39 pm »

Thanks rst
functional wipers are to fiddly for me  O0
-----
Today was very productive.  The POC of the Supportcrane was succesful. I'll build two of them from aluminium.

https://www.youtube.com/watch?v=3aH6XqgL1cQ&feature=youtu.be

Additionally I'm at last able to install the two bow thrusters. One in the right front bumper and the second in a more usual way.
Very low space for it thereby I have to strip all off the side tubes.






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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #41 on: May 29, 2020, 04:32:56 pm »

My most unloved part of building models is done. Painting great areas.


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RST

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #42 on: May 29, 2020, 11:29:19 pm »

Looks great. Excuse my ignorance but what is "POC" in relation to the crane please?




Rich
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derekwarner

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #43 on: May 30, 2020, 03:27:29 am »

...POC?.... the term is 'Proof of Concept'.... %)

A relatively modern day term...it has it's roots in absolute need for technical proof in defence of litigation should this crane fail and an incident occur


On a larger evaluation, the 'scale machine' may have passed the POC test criteria, so therefore $ funding may be made available to produce a life true size 'machine'....etc

20 years ago we presented materials or machine elements for Evaluation Tests or Evaluation Trials

One must assume that the moving and elevating 50 tonne blocks of sandstone to build the Pyramid of Giza 'Coordinates‎: ‎2958′45″N 3108′03″E' .....would have represented success in or of the Principal Contractor or Designer's POC O0

Derek

PS.....Ralf......I do like the boom extension and movement of the scale electro hydraulic hoist  :-))  ...ACTion P96 servomorph may be of interest for this hoist project in itself


https://www.componentshop.co.uk/p96-servomorph.html
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ballastanksian

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #44 on: May 30, 2020, 03:33:28 pm »

Lovely work Ralf!
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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #45 on: May 30, 2020, 07:00:22 pm »

Sorry Rich,
i've thought that poc is a well known abbreviation in a english language country.

Thank you Derek, for your explanation.
And for the hint. My Transmitter has this function included, but I was too lazy to programming the transmitter in every details.
And thank you too, ballastanksian, for your kind words.


-------
For me more comfortable work begein today. Electronics , soldering etc.

The complete electronics and power management will be set up in three layers. The first layer with the eleven esc is arranged, marked and ready for soldering.









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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #46 on: May 31, 2020, 06:42:05 pm »

second layer. power distribution


third layer: receiver


all together placed and fixed



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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #47 on: June 01, 2020, 05:33:24 pm »

Steering linkage. I don't have a stock of such things, so I made my own from brass.

Bullet proof, I think  :}



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RST

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #48 on: June 02, 2020, 10:58:07 pm »

Hi and sorry, Derek pointed out the bleedin' obvious.  Done countless "proof of concept" tests myself as an engineer up to 0.5MW electro-hydraulic systems, just never seen it abbreviated to "PoC" before...  Ask me what a DHSCIV, or a PUMV is and I would have got it LoL!
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pufferfish

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Re: Multipurpose workboat "Viking Energy" 1/50
« Reply #49 on: June 03, 2020, 07:08:31 pm »

It swims and now all the little details will follow. Suitable things will be printed in resin. To get the kowledge to draw them in Fusion360 is often more exciting than make and prepare the part.  This tilted bulwark is a good example


Parallel the work on the cranes has started.
Flanges to glue them on deck and the outer form of the bases are made today


The bases will hold the turning motor, mechanicals turn-stops, cable-channels and a slipper clutch.


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