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Author Topic: drawing a keel from plan  (Read 2948 times)

surabaya

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drawing a keel from plan
« on: May 19, 2015, 06:56:13 am »

Hi all. Probably a simple answer, but can someone point me to the right place.
I want to make a tug from a plan but it does not show the keel. Do I just draw the outline and make a guess at how deep or thick to make it ?
How do you guys start off making the keel?
Thanks all.
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Jerry C

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Re: drawing a keel from plan
« Reply #1 on: May 19, 2015, 08:37:15 am »

Can you give us more info on the tug in question. More modern tugs don't have the traditional "keel", being built up as a kind of monocoque construction. If the plans don't show a keel, does it actually have one?
Jerry.

surabaya

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Re: drawing a keel from plan
« Reply #2 on: May 19, 2015, 10:40:46 am »

Hi, I will check when I get home as I'm on the road.
As I remember it shows the plan, side view and contours from the front. I want to use plank on frame so I thought I would need to make a keel to hold frames in place.
But I will put name of plan later, maybe someone has made it.
thx
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Neil

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Re: drawing a keel from plan
« Reply #3 on: May 19, 2015, 12:37:47 pm »

when ever I have been taking a keel from a drawing that actually doesn't show model making construction lines I have allowed at least 20 - 25mm all around where the base line of the planking meets the "keel" and depending on size of model use either 4 or 6mm thick timber.this gives a good strong keel that usually won't twist. neil.
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surabaya

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Re: drawing a keel from plan
« Reply #4 on: May 19, 2015, 05:27:11 pm »

Hi, all. Home now.
The tug plan is the Archer and after a search I found that there is a build thread on here of same, so I am going to study that first and then perhaps ask some dumb questions :embarrassed:
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John W E

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Re: drawing a keel from plan
« Reply #5 on: May 19, 2015, 07:44:51 pm »

hi there Surabaya

Have a look in the master build section: under the Cervia tug build and that will give you a better description of how to do your framing, of your keel etc.

Basically, it is a similar tug to the Archer.  The Archer being a slightly smaller tug and the other difference is the Archer is a direct drive with a 555 motor; and the Cervia uses a belt drive gearbox with a 540 motor inside.

By the way, there are no dumb questions which are asked - the dumb questions are the ones that aren't asked :-) so please ask away.  That is what we are on forum to help one another.

aye

John

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surabaya

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Re: drawing a keel from plan
« Reply #6 on: May 21, 2015, 04:15:06 pm »

Hi, thanks all, I think I have it now.
If it has a real keel, I  just measure up and draw appropriate line to correct depth,,
 but if it does not have a "keel" I can just draw a line 20 or so mm inside outline and use that to build from, of course allowing for the thickness of the planking,
Thx, bluebird, The Cervia build really helped.
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