Tadpole Sub! Yet another strange BD project!!

[crazy ivan]

More video:

http://www.youtube.com/v/AxgH6vh4I3Q

And more.....

http://www.youtube.com/v/AyasP7BQfYk

More video:

[youtube]http://www.youtube.com/v/AxgH6vh4I3Q[/youtube]

And more.....

[youtube]http://www.youtube.com/v/AyasP7BQfYk[/youtube]

[raf]

hallo

nice video

philossopy of building subs
weight

hallo

nice video

philossopy of building subs
weight as far down as possible
electronic's as high as possible
if ther is a leak the water wil always go to the belly of the sub
and ther is only lead and battery's

regards raf

[bigdave]

Very True my friend.
That

Very True my friend.
That is why only my battery got wet. BD.

[bigdave]

I have made a few

I have made a few easy changes to fix the problems.
I found the robot arm seals were leaking at the larger side as I only tried tie wraps to seal them.
The addition of some RTV has fixed that problem.
I also decided to try the original seal that came on the jar which is a kind of waxed thick paper seal.
I figured it worked for the mayo so why not the water.
Testing in the laundry tub has proven successful. Which goes to show you never try and over think a design.
If it ain't broke, don't fix it!!
I also added the extra led required so this time testing should be better.
Now Don needs to open the test tank, I mean pool!!! BD.

[crazy ivan]

And the results were....

http://www.youtube.com/v/Xr7-QCiv4Ak

Uh-oh!!

http://www.youtube.com/v/Jd1hL2IHCAw

And the results were....

[youtube]http://www.youtube.com/v/Xr7-QCiv4Ak[/youtube]

Uh-oh!!

[youtube]http://www.youtube.com/v/Jd1hL2IHCAw[/youtube]

[Guest]

Re the comment on the

Re the comment on the video about bow planes. Why not just add some fixed bow planes, dialled in a with a bit of down angle, like the Germans did with the little coastal WWI UB1 boat.

A leveller would keep the rear in check, and you can control the depth using the throttle.

[bigdave]

My real problem was not

My real problem was not enough weight. I had added quite a bit more but it still was not enough. Once I get the weight in so it will dive I should be OK. I had zero leaks this time using the stock mayo jar seal.
Who Knew!! BD.

[redboat219]

Bottle Sub

just found this. looks interesting
[youtube]http://www.youtube.com/v/QwISkc20zfU[/youtube]
[/b]

[bigdave]

That is quite the antenna!!

That is quite the antenna!!
I guess that way you always know where the sub is as long as the water is not deeper than the antenna. BD.

[redboat219]

Might be wrong but I

Might be wrong but I think the antenna is also the snorkel. It's a great scratchbuilt sub made of PET bottles. Even has a camera in the bow. Had a chance to talk with the builder and he has sent me some great pics of the sub. I'll ask permission first before I'll post them here.

[bigdave]

That would be cool to

That would be cool to see them. BD.

[redboat219]

Here are pics of the

Here are pics of the bottle sub












The builder Simo says;
"E.S. Bottle can dive to depth of one meter. Dive depth is unfortunately limited by snorkle wich equalizes pressure in watertank while water is pumped in. I could get rid of the snorkle if I would replace waterpump with an air compressor which would store watertanks air inside E.S. Bottle. But snorkle tells where submarine is while it´s under water wich is pretty important thing in these Finnish waters.

I have to admit that my submarine has few small leaks but they are so small that they don´t harm E.S. Bottles equipments wich all are not touching submarines floor where water is collecting.

You´re right about that nose is connected to main hull with screws. They are taken from big sport drinking bottle. Screws are easy to open and they keep water outside."

[bigdave]

Very cool design. http://www.subcommittee.com/forum/icon_cool.gif
Thanks

Very cool design.
Thanks for posting the photos. BD.