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Author Topic: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)  (Read 9463 times)

Offline frap10

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #90 on: September 12, 2018, 02:39:43 pm »
Wow great work!

Offline Kingbob

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #91 on: September 29, 2018, 10:49:31 am »
Work is still progressing on the ship, have been in the sand/putty/prime/sand/putty/prime/sand/putty/prime... phase lately.
The engine section is just about ready, all the detailing is added, and finished smoothing the engine tubes today. Have a last bit of sanding to do on the aft section and it will be ready, then just some work on the head to do.

I have started painting the side detail panels though (the ones where the red missile tubes are) since they just slot in, so i can do them and just drop them in when ready. Am doing some colour testing deciding exactly what colours to use.
In the show it looks quite shiny, with metallic silvers, gun metals, and metallic grey colours, but i think thats more to do with the CGI rendering. To me it should be more matte than shiny, and probably varying shades of grey (light and dark). But i may use some gun metal in a few places so will see how i go.

Offline Kingbob

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #92 on: September 29, 2018, 10:57:31 am »
And in other news, you may have seen it mentioned that I have already printed a second one for someone else. They've been flying through it and provided feedback. I made a couple of tiny tweaks to improve fit on a couple of parts, but besides that, it looks like the design is done. Have also finished the instructions and a doco with construction and printing notes. The person i printed it for isnt on this forum, but is on The RPF. My build thread is here: https://www.therpf.com/showthread.php?t=292082 so you can ask them what they think of it.

That means for those who were interested in buying a copy of the printable files, they're now ready!
Am asking $100US.

PM me if interested.

Offline scottminium

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #93 on: September 29, 2018, 07:20:13 pm »
If I only had a printer!
"I rather believe that time is a companion who goes with us on the journey, and reminds us to cherish every moment... because they'll never come again."

Offline Kingbob

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #94 on: September 30, 2018, 12:19:49 am »
If I only had a printer!

Out of curiousity I priced it up using Shapeways and almost choked. $1500 just for the rotating section!

The one i printed for the other person i charged $550US for, which basically works out at $2/hr. So same if you want one :)

Offline scottminium

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #95 on: September 30, 2018, 04:29:28 pm »
The Omega is as long as a Star Destroyer?  I would not have thought that.  Perhaps I could afford the 1/3400 version.   :P
"I rather believe that time is a companion who goes with us on the journey, and reminds us to cherish every moment... because they'll never come again."

Offline Kingbob

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #96 on: October 01, 2018, 03:50:27 am »
The Omega is as long as a Star Destroyer?  I would not have thought that.  Perhaps I could afford the 1/3400 version.   :P

Yeah its supposed to be about 1.7km long, which seems a bit large to me when seen on screen.

I'm still tweaking the smaller version, had to change a few things to still be printable, a simple resize just didnt work on the design. But a 50cm version uses 1/4 the plastic and almost 1/4 the print time, so probably work out around $150 at a guesstimate.

Offline Kingbob

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #97 on: November 17, 2018, 04:31:31 am »
So I havent done much on the Omega for a few weeks, started a new job and havent had a lot of spare time. But i put today down as a day to work on it, and got some good progress. Decided i'd spend the day getting the rotation and power to the rotating section working.

Did some checking of clips from the show and it looks like it rotates somewhere around 1-2rpm. To get something that spins that slow, with enough torque, i ended up just using a continuous rotation servo. The speed can be varied so I can tweak it if needed. Originally i was going to try and mount the servo on the centre supporting aluminium tube, but it was a really tight fit and i wasnt happy with it. Instead I mounted the servo in the rotating section, so it drives against a gear fixed to the centre rod. The servo has about 3-4kg of torque, but i've also got it geared down roughly 7:1 so gives plenty. Also fitted it with a small DC-DC step down converter to supply 6V to the servo, and to an Arduino to drive the servo.

As well as that, i made up the power rings to get power into the rotating section for LEDs etc. I got a copper plumbing fitting cut down to get 2 rings, mounted on a plastic tube to insulate from the centre tube, and mounted that in front of the main gear. Gives power to the arduino/servo, and for LEDs as well. I'll also use the arduino to flash some LEDs. The 2 brass contacts havent been bent to their final shape yet, but they're held under spring tension so should keep good contact. Also put on a smear of carbon grease to keep it moving nicely.

Gear and power ring fitted:


The servo/arduino block:


And underneath, you can see where the gears meet.


Fitted:







« Last Edit: November 17, 2018, 04:36:15 am by Kingbob »

Offline scottminium

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #98 on: November 17, 2018, 06:23:44 am »
 :o :o
"I rather believe that time is a companion who goes with us on the journey, and reminds us to cherish every moment... because they'll never come again."

Offline starsiegeplayer

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #99 on: November 17, 2018, 12:37:24 pm »
I can't see the latest pictures 😕

Offline Kingbob

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #100 on: November 17, 2018, 10:26:15 pm »
I can't see the latest pictures 😕

Does this one work?

Offline starsiegeplayer

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Re: Scratch built Babylon 5 Omega Class destroyer (Now with 50cm baby version)
« Reply #101 on: November 18, 2018, 02:11:09 am »
I can't see the latest pictures 😕

Does this one work?


No that one doesn't work either.  :(

I don't think the permissions are set to allow others to see the photos on your iinet account?



Offline pakratt840

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Dan

Yoda & Luke discuss building the Refit
Luke: I'm not afraid!
Yoda: Oh...You will be...You...Will...Be!

 




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