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Trilam Warbow Hickory/Greenheart/Hickory 125-130lbs@32"
Prarie Bowyer:
I haven't read everything above.
My thoughts is that Hickory is an excelent wood.
I like the tri lam design for a few reasons. A major one is that it is efficient use of wood. Also it can be pretty. It takes more technical plannig in the early design and layout stages.
The concept is great because you gain alot of strength from the gluelines which helps reduce limb weight.
I find trilam ELB's difficult to make and still get the right look because of the above.
mikekeswick:
--- Quote from: Prarie Bowyer on March 09, 2013, 09:52:26 am ---I haven't read everything above.
My thoughts is that Hickory is an excelent wood.
I like the tri lam design for a few reasons. A major one is that it is efficient use of wood. Also it can be pretty. It takes more technical plannig in the early design and layout stages.
The concept is great because you gain alot of strength from the gluelines which helps reduce limb weight.
I find trilam ELB's difficult to make and still get the right look because of the above.
--- End quote ---
Gluelines do not affect stiffness. The concept is really nothing more than adding a pretty colour!.....at least the way most folks do things.
For a tri-lam elb then go for a 1/4 thick hickory backing a core of 1/16th to 1/8th then adda belly. 7/8ths thick at the handle with any dense wood for upto 60 lbs.
toomanyknots:
--- Quote from: mikekeswick on March 11, 2013, 03:33:56 pm ---
--- Quote from: Prarie Bowyer on March 09, 2013, 09:52:26 am ---I haven't read everything above.
My thoughts is that Hickory is an excelent wood.
I like the tri lam design for a few reasons. A major one is that it is efficient use of wood. Also it can be pretty. It takes more technical plannig in the early design and layout stages.
The concept is great because you gain alot of strength from the gluelines which helps reduce limb weight.
I find trilam ELB's difficult to make and still get the right look because of the above.
--- End quote ---
Gluelines do not affect stiffness. The concept is really nothing more than adding a pretty colour!.....at least the way most folks do things.
For a tri-lam elb then go for a 1/4 thick hickory backing a core of 1/16th to 1/8th then adda belly. 7/8ths thick at the handle with any dense wood for upto 60 lbs.
--- End quote ---
I have also heard from other bowyers that the glue lines/laminates add stiffness, which can reduce limb mass in bows. Mike, can you explain why it is that this is said to be, and why it is not true? I honestly would like to know, and honestly haven't wrapped my head around that yet. If it is not true, than I cannot see any other benefit from adding a strip of ipe between hickory and osage. Osage and ipe are both dense woods that are great in compression. You often see them being used as cores, as well as bellys. I think this is funny, as you could easily switch them around, for what I would think would have to be the same effect? Logically, I would think the best use of a core would be a light but dependable and strong wood, that would reduce the weight of the limbs, but provide a good space between the outer back and belly, which are under the most stresses. I have always thought that this was the main concept in hornbow construction, seeing as lighter woods like mulberry were favored alot of the time, as well as maple. I have also heard that there is little reason to go over an eighth of an inch thick with a hickory backing? It seems to me, when researching laminate elb construction, there can be alot of conflicting information out there, and not a ton of thorough explanation. My favorite sources of info so far have been old out of print books found online.
nineworlds9:
So this company in NL sounds like a..Dutch Rudderbows. LOL hahaha. Their methods sound similar, the planing of lams, the glue joints. Functional bows no doubt.
Prarie Bowyer:
Agree to dissagree about disagreeing for disagreeing sake Mike Schwick.
1) I've read it in literature printed by far better Bowyers than myself.
2) the folks at Rudder bows who were WAY instrumental in gettingme started in this madness stated as much.
3) I've experienced.
But don't take my word for it. Take three pieces of wood 1/8" thick by some length and bend them as a bundle then glue them togeather and bend them again.
Debate solved. >:D
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