Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Submarines => Topic started by: swedishprojectbuilders on October 15, 2011, 10:36:02 pm

Title: Swede(s) building their second submarine WITH previous experience
Post by: swedishprojectbuilders on October 15, 2011, 10:36:02 pm
Hello everyone, Sebastian writing.
A new project is now in the early stages of planing. Either I will be making it on my own, or together with Kristofer whom I built the HMS Olympia with as a school project.

Update with pictures of the HMS Olympia will come shortly at the other topic.

This will be the second, a lot better and improved, submarines topic. She will probably also be a model of the Gotland Class.

More to come!

/Sebastian
Title: Re: Swede(s) building their second submarine WITH previous experience
Post by: swedishprojectbuilders on October 24, 2011, 10:21:11 am
I've now decided to begin with the hull. The scale will be 1:50 of the Swedish submarine type Gotland Class.
Length 1,2 metres, beam 0,124 metres. If I find a pipe with the width of 0,124 metres...

In the previous submarine, HMS Olympia, we built our own pistontank.
But for this new submarine I'm thinking of making 2 ballast tank out of 2 of these:
One in the stern and one in the bow. Any thoughts, good or bad idea?
(http://s2.postimage.org/nz6zzcm1h/Fettsug.jpg) (http://postimage.org/image/nz6zzcm1h/)
Cheers
/Sebastian
Title: Re: Swede(s) building their second submarine WITH previous experience
Post by: Martin (Admin) on October 24, 2011, 12:44:11 pm
Hi Sebastian,

How big are the pumps (litres)?
Will they hold pressure for at least 1 hour?

Title: Re: Swede(s) building their second submarine WITH previous experience
Post by: Davy1 on October 24, 2011, 04:44:16 pm
Hi Sebastian,

What are these syringes in "Real Life"?

David
Title: Re: Swede(s) building their second submarine WITH previous experience
Post by: Andy_k on October 24, 2011, 06:00:31 pm
Used in the motor trade to fill gearboxes not very successful and not for use as a piston tank just my opinion O0
Title: Re: Swede(s) building their second submarine WITH previous experience
Post by: swedishprojectbuilders on October 24, 2011, 11:58:12 pm
They are used to as Andy_K said, to "pump" oil out from engines.
0,5 litres each. And since they cost about 10euros each I doubt they have a good life length.
I agree, they wont be good to use. Will try to find something similar in plastic or make my own.

If the submarine weighs about 6-8kg, 15.4 pounds, and has this propeller:
http://www.engel-modellbau.eu/catalog/product_info.php?cPath=113_39_177&products_id=1947
(http://s1.postimage.org/nr88otzij/4185_g.jpg) (http://postimage.org/image/nr88otzij/)

And this motor:
http://www.cornwallmodelboats.co.uk/acatalog/mfa_950d61.html

(http://s3.postimage.org/og8sgu80v/950d_lrg.jpg) (http://postimage.org/image/og8sgu80v/)

Will it be bad, good, ideal? Feedback please!
And yes, 12V battery.

Cheers!
Title: Re: Swede(s) building their second submarine WITH previous experience
Post by: U3503 on October 25, 2011, 11:31:16 am
Look here

http://www.pressluftjunkies.de/forum/viewtopic.php?f=14&t=47

Title: Re: Swede(s) building their second submarine WITH previous experience
Post by: swedishprojectbuilders on October 25, 2011, 11:47:15 am
Thanks for the link.
The blueprints is very helpfull.
Will begin to sketch on my own blueprints during this week. Interesting choice of using metal as tube.
Title: Re: Swede(s) building their second submarine WITH previous experience
Post by: swedishprojectbuilders on October 28, 2011, 12:25:16 am
I've been painting some in MS Paint.
I have acces to better programs but I find Paint very helpfull during the early stages.

(http://s7.postimage.org/rdzp5jykn/Skiss_26_10_2011.jpg) (http://postimage.org/image/rdzp5jykn/)

(http://s1.postimage.org/gri5f4s17/Knappt_B_tank.jpg) (http://postimage.org/image/gri5f4s17/)
No measurements etc yet. And do note, this is only a sketch.
The "motor" wont be up there. And inside the tube there will be a piston.

Cheers
Title: Re: Swede(s) building their second submarine WITH previous experience
Post by: swedishprojectbuilders on November 05, 2011, 11:59:07 pm
Going to pick up some additional pvc-pipes and a pvc-board in the next coming week.
The really kind people at GPA-Plast and Carlsson & Möller have promised me some leftovers!
They are both companies who sponsored us with PVC pipes/boards and some good advices regarding how to use PVC-plastic properly during our first project too.
And I'm looking forward to meet them again!
Hopefully they'll have a 125mm Diameter x 900mm length pipe for me.

(http://s9.postimage.org/a9ialvs8b/logo2.jpg) (http://postimage.org/image/a9ialvs8b/)

School is taking quite a lot of my time at the moment, even though we "only" have math courses at the moment. But I will try to start fabricating next weekend!
For those of you who wonder, I began studying Mechanical engineering in Lund this fall. So time to build is limited..

Regards Sebastian