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hull lines

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Old 11-05-2006, 07:59 PM
  #1  
trckey2
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Default hull lines

i was looking at [link=http://www.pt-boat.com/originalhull/pt593.html]pt-boat.com[/link]

i am considering building a RC version of one to see if i can not sure

anyways, what is the purpose of the hull lines? i cant figure them out for some reason

HELP!!!!!!!!!!!!!!!!!!!
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Old 11-05-2006, 10:34 PM
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Default RE: hull lines

The hull lines show a cross section of the boat.
Sometime the left side shows the bow to the mid point of the boat, and
the right side shows the stern to the mid point of the boat.

If you make a copy of the Hull lines, and fold the image in half, and cut, say, frame number eight, then unfold the paper. The cut out will show you a complete section of the hull at that point, frame eight.

If you look at a side view of the boat, or hull lines, there should be a set of numbers underneath the image that correspond to where each frame number sits in relation to the length of the ship or boat.

http://www.pt-boat.com/originalhull/pt593.html

If you make a paper cut out of each frame, you can then spray mount the paper cut outs to plywood, and cut your frames out of the plywood using a coping saw, band saw, or jig saw. You would then cut out a keel from the plywood using the side view, mark that for the fram points, and stand each plywood frame onto the keel. Once you get this done, you are well on your way to scratch building your PT boat.

[8D]
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Old 11-06-2006, 01:11 AM
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Default RE: hull lines

If you want to try something a bit quicker, go with a fiberglass hull outside of a cardboard frame. Use the plans to cut a profile of the boat. This will be your keel. Then cut 2 of each half frame also out of cardboard and hot glue them on stations. I like to cut the deck profile out first and hot glue it to the profile keel in a T. Then glue the half stations on as you go. You can then plank that out with cardboard and skin it with fiberglass then flip it over and cut out the cardboard frames and keel to make room for your gear.

Here is a 74" long 1/144 Iowa Class Battleship plug that I am making using this method. I am filling the voids with foam and will shape and bondo this to a finish. I will be building a mold off of this, so I want it to be very stiff and stong. So the foam covered in bond is used instead of planking the frames. (weight is not an issue) The foam can be carved out to make a boat as well, but is tougher to clean out then just open framework. I included a shot of the deck with the plan taped to her to give me some idea of how the finished model will look.

Please do not tell my wife I had this on her coffee table to get some pics for you. Lucky for us she was sleeping.
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Old 11-06-2006, 08:38 AM
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Default RE: hull lines

How do you insert the hull lines into AutoCad and generate a solid 3D hull?
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Old 11-06-2006, 02:16 PM
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Default RE: hull lines

Nevermind. my AutoCad 2007 has a LOFT function that they just added recently. Works good.
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Old 11-06-2006, 06:16 PM
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Default RE: hull lines

ok, i like the fiberglass idea
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Old 11-06-2006, 07:10 PM
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Default RE: hull lines


ORIGINAL: trckey2

ok, i like the fiberglass idea

Fiberglass is the finish of choice regardless of which method you use to construct your boat. Almost everyone uses Epoxy resin and fiberglass these days.

Typical ship constructions.
http://groups.msn.com/ModelersAndHob...struction.msnw

http://groups.msn.com/ModelersAndHob...stbuildup.msnw

Foam hull master.
http://www.rcgroups.com/forums/showthread.php?t=551258
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Old 11-07-2006, 06:15 PM
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Default RE: hull lines

got it, luv your tugboat
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