20ft Texas Barrel

A forum for contacting other builders of Ken Hankinson designs. These designs are now a part of the Glen-L family.

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Bill Edmundson
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Re: 20ft Texas Barrel

Postby Bill Edmundson » Fri Jun 23, 2017 3:03 pm

Matt

Mine were wrong. I had to move them. There is an extra board/patch in the lower picture. You can see where I moved one of the frames. This is a tough call.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

neel thompson
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Re: 20ft Texas Barrel

Postby neel thompson » Sat Jun 24, 2017 4:09 am

Matt, Check your plans, but I am pretty sure the waterline is in line with the bottom edge (top edge when hull is upside down) of your stringers. Just use that as a reference to plan for your exhaust ports.

TomB
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Re: 20ft Texas Barrel

Postby TomB » Sat Jun 24, 2017 6:12 am

The boot top (waterline) is called out in the instructions. "locate the top of the 2" wide boot top 2" below the setup line."

Hercdrvr
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Re: 20ft Texas Barrel

Postby Hercdrvr » Sat Jun 24, 2017 7:00 am

Awesome advice, thank you all. I think I may have cut my exhaust holes in the transom too high. Think I'll fix it now rather than trying to drill 2 big holes through the middle of the camber board a year from now.

Matt B

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Jimbob
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Re: 20ft Texas Barrel

Postby Jimbob » Sat Jun 24, 2017 8:58 am

Hi Matt,
Sorry I'm late to getting back to you. Here are some thoughts for you.

On the exhaust ports. I understand that the setup level is where the waterline ends up. With that in mind, first determine where you want the exhaust ports to be. Some like them above the waterline, others want them lower. Some like them half above the waterline and half below. Make sure that you make the holes in the transom large enough so you have room for the final placement of the exhaust ports when you cut the final holes through the mahogany veneer. Don't forget about allowing for the size of the exhaust hose and access to the related clamps. You will also want to be able to access those clamps with a driver to tighten them. On the placement of the curved spacers, I followed the plans, but the spacers got in the way. I don't think it is that critical where they are placed up or down because all they do is provide support for the outer veneer layers. With that in mind, I would position them so they don't get in the way of where you want the exhaust ports to be.

In thinking about the transom, I built up 4 layers of mahogany veneer so that the transom "caps" the end of the boat. Some people only use 1 mahogany veneer thickness on the transom. The reason I did mine with the 1/2" cap is because when you get to the point where you put on the stainless steel bands, there is supposed to be 1/4" of transom showing outward from the band. The last top veneer was left off so it will be easier to trim the final deck veneer. After the deck is put on the final piece will be attached to the transom. I saved a piece to match the existing veneer.

Not sure what you mean on the transom angles, but this may set your mind at ease. The curved spacer pieces are all the same so the curve at the back of the boat is the same from top to bottom. The support brackets for the transom are 90 degrees to the motor stringer so there is no angle there. Everything is faired to follow the shape of the sides and bottom of the boat.

I attached some pictures that might help.

Jim
Attachments
P1010029.JPG
These are the pieces before assembly
P5260127.JPG
I attached the plywood transom first, and then attached the spacer pieces with epoxy and pocket screws.
P7060130.JPG
Here's a pic of the transom in place
Jim Neeley
Sacramento, CA

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Jimbob
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Re: 20ft Texas Barrel

Postby Jimbob » Sat Jun 24, 2017 9:05 am

Matt,
Here are some pictures of the exhaust ports on my boat. I would have liked them higher, but I was limited by the curved spacers in the transom. I cut the holes for the exhaust tips with a large hole saw. I was afraid to use a a router circle cutter. It was pretty scary, but it came out o.k.
If you look closely at the first pic you can see the 1/2" cap I was talking about in the previous post.
Jim
Attachments
20160905_205516.jpg
20160905_205648.jpg
Jim Neeley
Sacramento, CA

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Bill Edmundson
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Re: 20ft Texas Barrel

Postby Bill Edmundson » Sat Jun 24, 2017 9:46 am

Matt

That is exactly what my problem was. I discovered that the exhaust would be right at the camber board and had to move it.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

Hercdrvr
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Location: McKinney TX

Re: 20ft Texas Barrel

Postby Hercdrvr » Sat Jun 24, 2017 12:31 pm

This is some really good info. Give me a couple of weeks to work on the transom and digest everything to see where I am.

Matt B

Hercdrvr
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Re: 20ft Texas Barrel

Postby Hercdrvr » Tue Jun 27, 2017 7:48 am

I'm ordering all the 3mm plywood in one shipment. Basic head scratching says about 30 sheets should get all the diagonal planking done.

How many sheets did other Barrel Back builder use? Or other cold mold builders in the 20ft range, Tahoe, Ket Largo, Biscayne, etc.

Thanks,
Matt B

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Bill Edmundson
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Re: 20ft Texas Barrel

Postby Bill Edmundson » Tue Jun 27, 2017 8:21 am

Matt

I can't find my build cost spreadsheet, Tahoe 20', to know for sure. My weight calculation shows 19 sheets of 1/8" at the time. It shows 19@11.5#. With waste probably 22 or 23.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

FFRCOBRA
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Re: 20ft Texas Barrel

Postby FFRCOBRA » Tue Jun 27, 2017 11:36 am

Hercdrvr wrote:I'm looking at everyone's exhaust cut-outs, are mine too high up the transom? When I say "high" I'm mean after the boat is flipped, my intent is to have the bottom of exhaust trumpets at the water line.
Matt B


EDIT: Sorry. I was replying to the question on page one of this thread. I didn't see there was a page two with all kinds of suggestions. Just disregard. Sounds like you have it figured out.


They look higher than mine.
When building:
Image

And then flipped.
Image

Not commenting either way. Just offering a comparison.
Craig

Hercdrvr
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Re: 20ft Texas Barrel

Postby Hercdrvr » Tue Jun 27, 2017 1:58 pm

Craig,
Your exhaust height looks good. Mine are too high, going to make cutouts in transom below the middle camber board.
Thanks for the pic

Hercdrvr
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Location: McKinney TX

Re: 20ft Texas Barrel

Postby Hercdrvr » Tue Jun 27, 2017 4:04 pm

Anyone else have inputs on total number of 1/8" sheets of plywood for a cold mold 20ft'er??
I don't want a bunch of 1/8" material left over, too thin for most topside construction.

Matt B

alycat
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Re: 20ft Texas Barrel

Postby alycat » Tue Jun 27, 2017 5:57 pm

I should have some pics in my face book album, I would make sure u have enough room for your exhaust, from what I have come up with from the plans and reading the instructions too many times, the waterline should be 2 inches below the setup level once the boat is righted. I know I am cutting it close with the access due to the transom cross memebet creating the curvature of the transom.
Will Manwaring
Shreveport, LA

Barrelback 19' stretched to 20'

https://www.facebook.com/media/set/?set ... 3171d9bb06

Hercdrvr
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Re: 20ft Texas Barrel

Postby Hercdrvr » Thu Jul 13, 2017 1:33 pm

She's faired, anybody want to borrow some saw dust?

Matt B
Attachments
IMG_2942.JPG
IMG_2941.JPG
IMG_2939.JPG


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