Laminated Stem in Barrelback 20

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GregHall
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Laminated Stem in Barrelback 20

Post by GregHall » Mon Mar 04, 2019 11:16 am

Just an off-the-wall idea but has anyone laminated the stem in a Barrelback?
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billy c
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Re: Laminated Stem in Barrelback 20

Post by billy c » Mon Mar 04, 2019 12:00 pm

Greg, I think we all laminated the stem as it is a pretty thick piece of stock
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GregHall
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Re: Laminated Stem in Barrelback 20

Post by GregHall » Mon Mar 04, 2019 2:20 pm

Actually, I should've been more clear, laminating on a buck into the shape of the stem instead of laminating three pieces of plywood together.
billy c wrote:
Mon Mar 04, 2019 12:00 pm
Greg, I think we all laminated the stem as it is a pretty thick piece of stock
Billy
Building a Barrelback in Rome, Ga.
Never fly with anyone braver than you.
Never run out of airspeed, altitude and ideas at the same time.
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billy c
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Re: Laminated Stem in Barrelback 20

Post by billy c » Mon Mar 04, 2019 2:45 pm

Greg with that approach, you would be going into end grain as you fair it and edge grain as you screwed into it. On the ply it is going into the face so would overall easier to work and stronger when you fasten
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GregHall
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Re: Laminated Stem in Barrelback 20

Post by GregHall » Mon Mar 04, 2019 4:17 pm

I'm not sure how I'd be fairing into end grain, this construction method has been used traditionally in other style vessels from canoes to larger sailboats. I was just curious if anyone had tried it instead of ply.


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Building a Barrelback in Rome, Ga.
Never fly with anyone braver than you.
Never run out of airspeed, altitude and ideas at the same time.
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billy c
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Re: Laminated Stem in Barrelback 20

Post by billy c » Mon Mar 04, 2019 4:38 pm

OK ...well maybe not dead on end grain. But your stem is a faired to a point on the barrelback right? And hidden so no beautiful grain is even exposed.
Either way will work. IMO Ply makes more sense on this one :D
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GregHall
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Re: Laminated Stem in Barrelback 20

Post by GregHall » Mon Mar 04, 2019 4:57 pm

I agree, ply makes more sense, I just wondered if anyone had explored the method in a runabout before. And yes the reason was, I considered using mahogany as the outside couple layers for rounding of the cutwater somewhat.
billy c wrote:
Mon Mar 04, 2019 4:38 pm
OK ...well maybe not dead on end grain. But your stem is a faired to a point on the barrelback right? And hidden so no beautiful grain is even exposed.
Either way will work. IMO Ply makes more sense on this one :D
Building a Barrelback in Rome, Ga.
Never fly with anyone braver than you.
Never run out of airspeed, altitude and ideas at the same time.
www.youtube.com/c/austringercreations

TomB
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Re: Laminated Stem in Barrelback 20

Post by TomB » Mon Mar 04, 2019 4:59 pm

Greg,

There is one custom builder that I know of that laminates stem and stringer in the narrow dimension. The boat I'm thinking of is 35' to 40" long. Two pair of stringers support engines and then curve up in the bow (visualize wooly mammoth tusks). Laminations alternate between solid lumber and scarfed plywood.

They use HUGE clamping tables and HUGE clamps and a lot of people during glue up.

When thinking about the tight turn from keel to stem, I would forced into a fairly thin laminating layers, 3/16" maybe. Then count the layers. That a lot of layers to make, keep square and in continuous contact through the length of the stem before the epoxy cooks off. It seems like an interesting idea with a lot of potential down side. I agree with Billy.

Tom

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