Akula 1/144 Scratch built

[bwi 971]

David Help,

I took the SD out of the Sub and tested it separately.....it takes 2 minutes to empty the ballast tank completely……no leakages on the vent valve....is this normal for a 2.5" SD?

According the specs of the pump and the capacity of the balast tank, it must be able to empty the tank in about 40 seconds?
I think the pump isn’t working as it should be.
It explains also the why the pump isn’t able to suck air out of the SD. So the sub can't break the level of the snort. I never got the wouush sound.

Batery is fully charged 7.4 lipo, charged with 3200 mA, capacity is 3600 mA.

Grtz,
Bart

[He Who Shall Not Be Named]

David Help,

I took the SD out of the Sub and tested it separately.....it takes 2 minutes to empty the ballast tank completely……no leakages on the vent valve....is this normal for a 2.5" SD?

According the specs of the pump and the capacity of the balast tank, it must be able to empty the tank in about 40 seconds?
I think the pump isn’t working as it should be.
It explains also the why the pump isn’t able to suck air out of the SD. So the sub can't break the level of the snort. I never got the wouush sound.

Batery is fully charged 7.4 lipo, charged with 3200 mA, capacity is 3600 mA.

Grtz,
Bart

I bet your snorkel float is hanging up by vacuum -- once you start the blow at depth, air is pumped out of the dry spaces into the ballast tank, creating a partial vacuum. That vacuum is applied to the snorkel valve. If the float valve is not heavy enough to drop (once the buoyant force is gone -- broaching the sail), then you will only be getting air from the SD and eventually the pump will stall. When you handle the boat (taking it out of the water, for example) the float is joggled enough to drop and break the vacuum. And you're left scratching your head (or thinking about Tom in lip-stick, for Christ's Sake!) wondering why it took so long to blow.

Ad some weight to the float and try it again, pal.

M

[bwi 971]

I bet your snorkel float is hanging up by vacuum -- once you start the blow at depth, air is pumped out of the dry spaces into the ballast tank, creating a partial vacuum. That vacuum is applied to the snorkel valve. If the float valve is not heavy enough to drop (once the buoyant force is gone -- broaching the sail), then you will only be getting air from the SD and eventually the pump will stall. When you handle the boat (taking it out of the water, for example) the float is joggled enough to drop and break the vacuum. And you're left scratching your head (or thinking about Tom in lip-stick, for Christ's Sake!) wondering why it took so long to blow.

Ad some weight to the float and try it again, pal.

M

I sent you an e-mail with a video attached

Grtz,
Bart

[He Who Shall Not Be Named]

E-mail sent your way, Bart. You incredible pain-in-the-ass!

M

[bwi 971]

You incredible pain-in-the-ass!

M

What did you expect from a guy, who is living in a country which has a “Manneken Pis”,meaning "Little man Pee", as the national statue?

grtz,
Bart

[bassplayer1]

Great job!!! Congrats!!!

[bwi 971]

Questions,

• The controller for the SD mini airpump, is it 6V / 0,5 Amp?
• Does it also act as an electrical noice reductor?

Thks,
grtz,
Bart

[bwi 971]

Something floated into my letterbox yesterday......this means that I have to move my ass and finish that gray thing...............……she who must be obeyed is very disappointed about it……all future domestic breakdowns will again have to be written on a to do list.

Just finished the old list….........thinking about it did you have an agreement with her?
I bet you had you SOB you

Grtz,
Bart

[He Who Shall Not Be Named]

stop blubbering and get to work. (sorry about the delay, pal).

David

[HardRock]

We all have a 'Honey do" list Bart. Honey, do this; Honey, do that. etc etc. And I'm entirely OK with that - really I am (just in case you're reading this Honey).

[bwi 971]

And I'm entirely OK with that - really I am (just in case you're reading this Honey).

Good recovery man...

It has been awhile, busy times @ work, awaiting spare parts, carry out jobs around the house. yeah you are wright full of excuses to cover up I was just sitting on my butt doing nothing. I started to reorganize my workshop/basement. Installing new shelfs fabricating new worktables. I tried and managed to get the most out of the small place. Some more varnishing and boxing up to do and I'm ready to go. Work in progress.

[HardRock]

Hummmmmm. I think I have spotted the reason for your quiteness of late!

[bwi 971]

Busted!

Grtz,
bart
(Actually that bottle of champagne is only to be opened after the public maiden voyage of the AKULA)

[He Who Shall Not Be Named]

LOL!

Stash, revealed! Bart is Busted!

David

[bwi 971]

The small drawer organizers arrived today....it starting to look like a real workshop.
The 300m³/hr (175 CMF) extraction range hood will be ordered tomorrow.

Grtz,
Bart