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Re: American Civil War City Class Gunboat

PostPosted: Tue Feb 09, 2021 5:52 pm
by AlwynTurner
Just a suggestion but have you considered replacing some of those heavy metal components with 3d printed parts, I have this picture of your gunboat with it's rear deck submerged! Maybe you could place the motors at the centre of the boat with long prop shafts?

Good luck with the build :clap: :thumbup:

Alwyn :thumbup: :wave:

Re: American Civil War City Class Gunboat

PostPosted: Tue Feb 09, 2021 6:32 pm
by Jimster
I have not thought about 3D printed components but I’ve seen some. I’m going to use 43” of solid insulation foam board two layers thick so hopefully it will be quite buoyant and easy to add weights to get the proper waterline. I’m definitely going to experiment with motor placement and will probably use 12” propeller shafts.
I plan to coat the hull with a Bondo type stuff or two part resin or something that’s foam compatible.

Re: American Civil War City Class Gunboat

PostPosted: Thu Feb 11, 2021 4:05 pm
by EAO
Wow,

Those are some serious motors, probably strong enough to move that Civil War Gunboat along at off shore cigarette boat speed! 8O But, that would be silly! :D

Cheers,
Eric.

Re: American Civil War City Class Gunboat

PostPosted: Fri Mar 05, 2021 2:55 pm
by Jimster
Sloooww progress. I have the foam hull started with the “engineering space” cut out for all the hardware. A second layer of foam board is glued to the bottom. Once carved into shape it will get a covering of Bondo or some waterproof resin of some sort. The 540 electric motors are shown in their approximate locations.
Image


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Re: American Civil War City Class Gunboat

PostPosted: Fri Mar 05, 2021 8:51 pm
by Will01Capri
oh WOW!
I never knew of the existence of this boat until i watched the film sahara and researched if indeed the ironclad was real. it is soooo coooool
You need a truck and trailer to move it to the docks hahahahahahaha
Lovely work

Re: American Civil War City Class Gunboat

PostPosted: Fri Mar 05, 2021 9:58 pm
by Jimster
Thanks, man. Your creations (and creativity) have partly inspired me to tackle this project. I’m just getting spread a little thin with several projects going at once.

Re: American Civil War City Class Gunboat

PostPosted: Fri Mar 05, 2021 11:51 pm
by Will01Capri
Haha, I know that feeling.

Re: American Civil War City Class Gunboat

PostPosted: Sat Mar 06, 2021 1:41 am
by Snowwolflair
Good luck with this model.

I have built a lot of RC warships and you are going to need flat calm water to sail her.

Keep your weight as low as possible and centred to stop wobble and I would even recommend you mount you motors and gearboxes sideways to get the motors as low as possible.

Re: American Civil War City Class Gunboat

PostPosted: Sat Mar 06, 2021 2:00 am
by Jimster
Thanks, I’ll keep that in mind. First ever rc boat for me so I need all the advice I can get.

Re: American Civil War City Class Gunboat

PostPosted: Sat Mar 06, 2021 2:08 am
by Jimster
More like this?
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Re: American Civil War City Class Gunboat

PostPosted: Sat Mar 06, 2021 8:14 am
by Snowwolflair
Yes perfect. Also a lip around the opening to keep deck wash out will be necessary.

The real thing had the seaworthiness of a plank of wood.

Re: American Civil War City Class Gunboat

PostPosted: Sat Mar 06, 2021 4:30 pm
by EAO
Jim,

After your video of "Miss Leningrad" testing the water; and now this, it seems you have a thing for H2O and expensive electronics! :crazy: I have no doubt it'll turn out well, probably with a few "oh crap" moments in between just to keep it interesting! As my Grand Dad was fond of saying "what's the worst that could happen"? :lolno: Carry on, following along with much interest! :thumbup:

Cheers,
Eric.

Re: American Civil War City Class Gunboat

PostPosted: Sat Mar 06, 2021 5:16 pm
by Jimster
You know, I have been watching some cool YouTube videos of RC Type VII submarines. Hmm.....

Re: American Civil War City Class Gunboat

PostPosted: Fri Mar 12, 2021 1:17 am
by Jimster
WARNING! Images may be disturbing to some weak people. Viewer discretion is advised.
My styrene sheets arrived today! 2 pieces are 24” x 48” x .040” and one 12” x 48” piece .020” thick. I covered the foam main deck with .040” styrene tonight. Be careful when using new #11 blades. Do not drink before using sharp objects!
I’m trying to decide whether to sheath the hull with styrene sheet or use fiberglass cloth and resin to cover it. Any boat people here with recommendations?
Slow going but I thought I would post my progress such as it is. Lots of filing and blending and shaping to do on the hull of course.
Image

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Re: American Civil War City Class Gunboat

PostPosted: Fri Mar 12, 2021 2:39 am
by PainlessWolf
Jimster!
Great progress, Doc! It's definitely your model now that you've shed blood for it! ;o) Following along!
regards,
Painless

Re: American Civil War City Class Gunboat

PostPosted: Fri Mar 12, 2021 6:02 am
by Rad_Schuhart
I,d say fiberglass. Easier to work, easier to fix and if it is what most people use, there must be a reason...

Re: American Civil War City Class Gunboat

PostPosted: Fri Mar 12, 2021 12:32 pm
by Jofaur86
:D :thumbup:
To reinforce EPS / EPX or Roofmate poystyrene foam, use polyester or epoxy resin? preferably use a special Plyester, otherwise the foam part will melt. It is also possible to use a fine glass cloth, or paper towel to reinforce, but then sand and apply a coating to have a smooth surface. do I allow him to intervene? it is as a former Naval model maker, has already done this kind of thing, and if I can help

Re: American Civil War City Class Gunboat

PostPosted: Fri Mar 12, 2021 12:44 pm
by Jimster
Okay. I just ordered some 2 ounce fiberglass cloth. I already have Polycrylic and also some two part foam compatible resin. YouTube videos makes it look like a pretty straightforward job. I’ll finish the sanding and final hull shaping while I wait for the fiberglass cloth. Thanks guys!

Re: American Civil War City Class Gunboat

PostPosted: Fri Mar 12, 2021 6:51 pm
by jhamm
This is the usual blood toll a model demands...
I regularly injure myself while building models :O
But I still have all of my ten fingers. :haha:

Re: American Civil War City Class Gunboat

PostPosted: Fri Mar 12, 2021 7:02 pm
by Tiger6
All good models require a blood sacrifice at some point in the process...