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[chum444]

Wicked cool!

[Umi_Ryuzuki]

I decided to add radars to both models.
Getting a bit carried away in the CAD work. 

[kalkurap]

Hello Umi, really like how it is turning out. I had watched tiver21's YouTube videos on this project but wasn't sure how reliable and practical this was going to be, but the fact that you are building your second one answers that question.


I tried to download the sketch-up file linked by him, however I have not been able to scale it down properly in sketch-up or output STL files are are good for printing. Would you be kind enough to share the files, I would love to build one myself.


Good luck with rest of the build.

[Umi_Ryuzuki]

Hi Kalrup,
The original files are 1/144 scale. I scaled each STL file up in the slicer, by 150%, so that
I could print the model out at 1/96 scale. The only issue I have run across is that the bow
of the tug, well, the "front falls off". It has come out truncated, short the last 6 or 7 millimeters.So I cement a 1/4" piece of material to the bow and cut, file and sand it to shape. But all the
scaling, for print size is done in the slicer programs.  will PM you

[Umi_Ryuzuki]

... Do you have a link to where you got the grears from? If not I will look it up, shouldn't be a problem to locate them.

Hi Kalrup,


The Motors are 22-26k rpm, but
has been substituted, as it is no longer available. FK-180PH-3542 DC 3.7V 5V 6V 22200RPM
.
All the gears were 2mm shaft drilled and press fit onto 3/32" brass shaft.
The pinion on the motor was 18t and the pinion on the vertical shaft was 10t. 
.
The Crown Gears were 28t on top of the vertical shaft, and 20t on the propeller shaft.
.
Propellers were from Cornwall Model Boats Raboesh C-type, 25mm 4blade propellers M2 shaft, Left and right hand.

[Umi_Ryuzuki]

The tug got it's first pond run. 
 
.

[JaS]

so nice Umi

[steve mahoney]

Looks great!