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Input for a new flight bow

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joachimM:
Hi Folks, I would like to reach the goal of shooting 300 m (some 330 yds) with a 50# bow, either a so-called primitive self bow, or a primitive composite. The best I've ever shot with a self bow is some 230 m (a plum recurve), with a primitive composite (backed with a layer of plant fiber) that was 265 m. both were with pretty light carbon target arrows (I've never really got the hang of making my own arrows, let alone flight arrows)
I'm clearly not pushing my designs far enough, so I 'd like your input. How skinny do you make your tips? What about the tips of recurves?
 
I have a quite some pretty decent staves and boards to my disposition: enough english yew for a dozen longbows, lots of black locust logs waiting to be cut or split, really nice elm staves and logs, a few plum staves good enough for longbows or recurves, a few maple boards, ...
 
So if you had your pick for a primitive flight bow design, what would it be, and why?


thanks for any input!
Joachim

Badger:
 The arrow is more important than the bow.

joachimM:
Ha, I'm sure you're right on that, but
1) that doesn't answer my question (what flight bow would you make with what I have at hand?)
2) I don't presume I have ever made a bow that was close to being good enough that arrow quality would come into the equation ...
3) the science and alchemy of flight arrows is beyond my reach, I fear. I've seen quite some discussions here on flight arrows and couldn't figure out what makes a good flight arrow, ultimately. So I'm left with the part I can control, and I'll try different types of arrows to go with the bow until there's a combo that sticks I guess

J

Badger:
Any slightly reflexed pyramid bow will reach the distance you are after, No bow will reach the distance you are after without an almost perfect arrow.

Badger:
       There are some design features you want to keep in mind. You will be shooting light arrows so efficiency will be your biggest challenge. Some of the biggest losses in efficiency come from hysteresis which is primarily caused by set, so a low set bow will trump most all design features. Another big loss of efficiency comes from vibration in the limbs, I think of it more as distortion than I do vibration. The limb tips can get ahead of the bow limbs and the arrow leaves the bow before all the energy has been taken out. There are a couple of ways to avoid this, light weight tips are important but also less working limb means less limb to distort. Generally speaking with some exceptions wood bows should not be designed as fiberglass bows. They will simply take too much set. Simple designs like a 62" pyramid bow reflexed about 2" with very light tips is a proven design.

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