Primitive Archer
Main Discussion Area => Bows => Topic started by: dragonman on June 13, 2011, 08:23:41 pm
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Hi everyone, I havent posted a bow for a while , so thought I'd show some pics of my latest. Its a takedown bow, that it'nt quite finnished , because I'm just deciding how best to attatch the limbs.
Its bamboo back and belly, with a hard maple core, the belly boo is toasted from the inside. and the handle is ash. It is 52" and pulls 50# at 27"
Reason I posted is because while testing the bow I lashed the limbs to the core and they where suprisingly solid.... so was wondering whether to just lash on the limbs with nice cord instead of bolting them, as I had planned. Does any one have any ideas on this?
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Here's a photo of the bow during testing at full draw with the limbs tied on....
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I don't have an expertise answer,but I do have a humble opinion and that is looking like a sweeeet set up there. I love the profile.
Another opinion is I think some type of bolts (primtive looking)wood look better aesthically than the bulky looking lashing that is covering some of the beauty of your limb base and riser.
Anyways just my half cent and vote.
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That thing looks SWEET!! I agree with Blackhawk on the bolts...maybe some antler knobs would dress it up nice. ;D Either way GREAT BOW!!!
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Looking good.......
I like the way James attached the limbs on this bow. http://www.primitivearcher.com/smf/index.php/topic,10729.0.html
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No ideas but a great lookin' bow.
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That bow does look very nice. You can check out this takedown I made last year http://www.primitivearcher.com/smf/index.php/topic,22055.0.html for ideas
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I kinda like the idea of the lashing. If you have nice looking cordage that isn't too bulky it could really stand out. And besides, it's simple!
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Nice , very nice. The lashing appeals to me but at least check out the article Marc St Louis refers to. I will give that a shot someday soon.
Really like that bow of yours.
Lane
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The only thing that would bother me about cordage would be stretching and the limbs getting out of alignment
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very nice bow dragonman,, tiller looks really good.. i have a used cord wrap before,, it gave me a little trouble though,, i used a fast tapered wedge between the limb and riser,as i drove the wedge in it took the play and squeak out of the limbs when drawn,, p.s its good to see others trying the bamboo back and belly bows...........james
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Thanks guys for the input. The lashing on the full draw pic is really rough and before the handle was shaped properly> This just gave me the idea, but I would make the cordage look much neater.
However, on looking at those other takedowns of Marc and Robustus, (thanks Justin and Marc for the links), I noticed they only used 1 bolt for each limb... I was thinking I needed 2 bolts per limb and was concerned to drill the limbs near too near the fade out incase the bamboo back would be weakned and lift splinters at that point. The back bolt doent concen me like that.
Thanks Robustus for the wedge idea, I may try that...Does the single bolt hold the limb solid?? I guess it must do else you wouldn't have done it that way? You havent used a peg on the limb belly or something, to hold it in aligment and stop lateral movement of the limbs, maybe?
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SWEETTTTTTTTTTTTTTT
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yes , i used a 3/16 pin as an alinment in the riser above the bolt hole ;)
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It is very pleasant shape to this bow, I like very much. Your tiller looking quite good as well, I usually worry when hear about this type bow that there will be too much bending at limb and riser meet point, though you have made smooth bend it seems, very nice. I also think you would be happier with bolt, maybe not very primitive but design is already not so primitive. I think it will be easier to take down this way as well, and can make look better as others have done with a wood or antler cap on bolt piece.
May I ask to you and other here that make such bow. It needs much thickness at fade to get heavy weight without hinge at fade? Or is it angle of riser that changes way tip leverage is applied to fade of limb? Im thinking, closer to 0 degree platform, the more tip leverage is applied to this area, and thicker material is needed. as the angle increases the less stress in this area and thinner material can be used? I never build such bow, just thinking now.
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FarEast, this is my first takedown bow, so I dont have too much experience of tis design, but from what you say it appears that you understand the stresses involved... I would say that you design the limbs like an other bow so they start bending just out of the fadeout. If you increase the stress at this point by raising the limb angle then the limb needs to be correspondingly thicker where it attaaches to the handle..