Russian Alfa Class

[redboat219]

Buy a decent digital camera and shoot some videos.
Want to see how she moves.

[Das Boot]

Good job, Rob.

[rwtdiver]

Good job Rob. Another one to add to the wall.

Thank you Steve and Romel!

I appreciate the thumbs up!

Rob
"Firemen can stand the heat"

[SubDude]

Good job Rob. Another one to add to the wall.

[redboat219]

[rwtdiver]

Great work, Rob!

2" might be a tad on the high side. I'd shoot for something more like 1/2". You just need a whiff of positive buoyancy. Too much, and the boat will be fighting to stay under and be tricky to control when submerged.

Bob

Thanks Bob!

Today I finished up the interior and exterior finish work!



I finished out the interior of the hull with Red Oxide primer.



I used two 1/2" Velcro straps for the WTC hold downs.



I chose my standard rattle can finish on the exterior of the boat with a flat acrylic clear coat. As usual I will not be doing any of the detailed weathering on this boat, I how ever have some addition work to do on the not to scale sale array, but at this point I can consider this project complete. Thanks to all for your input and help!

I do have one more 3D printed submarine to complete and that is the German Type XXl U-2540. This is a model only and I do have a build blog started on it.

Rob
"Firemen can stand the heat"

[RCSubGuy]

Great work, Rob!

2" might be a tad on the high side. I'd shoot for something more like 1/2". You just need a whiff of positive buoyancy. Too much, and the boat will be fighting to stay under and be tricky to control when submerged.

Bob

[rwtdiver]

Weights have been adjusted and foam added to the Alfa!





The trim work is completed and I did run the boat from end to end of pool. I filled the ballast tank and did put the water level at just 2" below top of sail! I am very pleased with how it moved and responded in the water.

The brushless motor performed great, as well as the total modification work that I did on the 80mm WTC that I got from Nautilus Drydocks. All that remains is some finish work on the boat and a possible video in all it's colors!

Rob
"Firemen can stand the heat"

[rwtdiver]

Tomorrow I will be starting my trim work on the Alfa boat!



The WTC is complete, all linkages, drive systems have been installed, and the battery is in place! I have added some weight to the center of the bottom hull right at the keel, and at this point the CG is right at the center point of the boat. At this point I will take it to the pool and see where we are at with the trimming. I think I will need more weigh and of course foam will be added to the upper hull to further stabilize the boat in the water.

Rob
"Firemen can stand the heat"

[rwtdiver]

Finally! My WTC for my Alfa Boat is complete!





All the wiring is complete and checked out, but the big major change that I made to the WTC was to install a brushless motor system, which I am pleased to say works great!

As some of you are aware this WTC started out as an 80mm WTC with dual brushed motors that I purchased from Nautilus Drydocks for my Arkmodel Type VII submarine. Well in classic fashion I managed to screw up the (burned up) the original WTC. So I decided to refurbish the WTC and rebuild it using a single 750KW brushless motor and revamp the WTC except for the ballast pump and ballast tank and use this rebuilt WTC on my 1:72 3D printed Russian Alfa boat

Well I am here to say the rebuild turned out great and will make a great power unit for the Alfa.

Rob
"Firemen can stand the heat"

[rwtdiver]

6 oz. will work but it is harder to get it to lay down over sharp edges. If you lay it down with the weave at 45 degrees to an edge it will conform better. Just a little trick I learned from my friend Darrell who does a lot of mold making.

Thanks Steve!

That is a different approach to using fiberglass! I will give it ago!

Rob
"Firemen can stand the heat"

[SubDude]

6 oz. will work but it is harder to get it to lay down over sharp edges. If you lay it down with the weave at 45 degrees to an edge it will conform better. Just a little trick I learned from my friend Darrell who does a lot of mold making.

[rwtdiver]

I am getting ready to reinforce the hull sections on my Alfa!



I am going to use resin and fiber glass cloth.

QUESTION: Would # 6oz cloth be to heavy to lay up around the bulk head supports?

Rob
"Firemen can stand the heat"

[rwtdiver]

That’s a really cool looking tricopter Rob! Can’t wait to see the Alfa in the water.

Nate

Thank! I really enjoyed that hobby as well!
Now that the wiring on the motor and the ESC is all squared away (Thanks for the help) the rest will be a lot simpler and it should start moving along at a better pace! :-))

Rob
"Firemen can stand the heat

[neitosub]

That’s a really cool looking tricopter Rob! Can’t wait to see the Alfa in the water.

Nate