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[bwi 971]

As the ballast tk priciple is working I make a new one with all the protusions at the right positions (Ballast pipes, P/V valves, breather pipe). When...

[bwi 971]

I designed a housing for the P/V valves to conform with the other ballast tank appendages. The P/V valve will be pinched between an upper and lower housing,...

[bwi 971]

cherry poped...the WTC was tested.

Filling the Ballast Tank:
The gear pump fills the ballast tank with water. Air escapes through a...

[bwi 971]

Thinned the air dry putty to paint it on and then sand it down?
Grtz,
Bart...

[bwi 971]

I had to add the footholds at the bottom. First, they were scribed with an old stencil of the Akula.






...

[bwi 971]

as long as its position is higher than the watersurface when the boat is sufaced it will be ok, but I like to have some additional head so I maximised...

[bwi 971]

so is this...I hope they can tackle all the flaws....it will break open the SLS consumer market.

https://www.micronics3d.com/...

[bwi 971]

Various Progress

I reprinted all parts with the new resin as it withstands water.




Servo Linkages
...

[bwi 971]

I had a new insight regarding 3D resin.

The pump was left with water inside, and a few days later, I tried to turn it, but it was seized....

[bwi 971]

Inserts in place, motor attached.



Servo link bushing glued in place shaft seal fitted.



Servo...

[bwi 971]

I noticed that the holes in the motor endcap are too large to accommodate an M3 thread. Instead of redoing the endcap, I decided to enlarge them to 3.5mm...

[bwi 971]

I would have done the same, now its 3D CAD, estimate the tolerances/clearances, add supports, slicing and hope for the best.

Grtz,
...

[bwi 971]

End product, did the prototyping in PLA to verrify all was ok.
Grtz,
Bart...

[bwi 971]

The end caps of the ballast tank are ready... Perhaps my reasoning behind making a custom water pump did not make sense. Routing the tubing inside is...

[bwi 971]

I had a look and at this side of the pond they are realy expencive....16 x the cost of the equivalend o-ring.
As replcement will be easy I will...