Main Discussion Area > Horn Bows
New Turkish 48 inch
mullet:
I think so much of these kind of "punch it in " stat's is BS. A gimmick to get you to buy into buying more gadgets. A few years ago when I was hunting in Tenn. a young man shooting a bow I think was around 30# killed two of the nicest Bucks I've seen come from that area since I've had the chance to hunt there.
loon:
>65 foot-pounds recommended for biggest game
--- Quote ---< 25 ft. lbs.
Small Game (rabbit, groundhog, etc.)
25-41 ft. lbs.
Medium Game (deer, antelope, etc.)
42-65 ft. lbs.
Large Game (elk, black bear, wild boar, etc.)
> 65 ft. lbs.
--- End quote ---
I think momentum might matter more for us.. and that may be a bit overkill
what I mean is that this is probably meant for compound shooters who shoot really light fast arrows
I double-checked the KE using wolfram alpha and it was right
http://www.wolframalpha.com/input/?i=1%2F2+*+571+*+155%5E2+grains*fps%5E2+to+foot-pounds
Still, KE usually increases with heavier arrows?
Sorry, it was hard to not derail the topic after seeing that "oh yeah only for smaller deer" thing
anyway good luck, would like to see turkish hornbows matched with osage :o
mullet:
I don't think you can "Cookie Cutter" it for bows using natural products, especially Horn bows.
mikekeswick:
Ek = 1/2mv2. So just convert grains to kg and velocity to meters per second.
The thing with Turkish bows is that they don't really come into their own until you make them around 100# plus. Think of them as two parts working in unison. Bending inner limbs (sals) and the non bending outers limbs and tips (kasans/tips). The outer limbs for a 50# bow need to be the same dimensions as for a 100# bow. This is so that the bow can be tillered into stability, if you tried to make the 50# bows outer limbs proportionately smaller than the 100# bow you would have zero chance of it being stable.
Adam Karpowzi shows this in his book and offers a ratio of weight to draw weight as a good indicator of performance. The best bows will have a ratio of around 3, this bow is more like 6.5 (lower = better!). I've just started tillering a heavy bow and it weighs 320 grams and is definitely going to be close to 100# = 3.2.
There is no reason a wooden bow shouldn't be able to get close to what a lighter weight composite can do. The lighter the composite the smaller the gap and below 50# the wooden bow will likely win.
sleek:
Thanks for that Mike. I would have never known otherwise. It is still my goal though to make self bows that can hang at least side by side their horn counterparts. You got me thinking about a 100 pounder now....48 inches ttt, 28 inches lf draw.... man, that would be fun. Especially if I could find somebody else to test fire it!
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