Arrow Spine

M Hardman · Post by **M Hardman** » Mon Feb 26, 2007 5:40 pm

I dont know which technique you use to shoot with, but as I am a begginer in the thumbring school of technique its generally wise to have overspined arrows, and either way these new arrows shoot fine.

Mike

ginni · Post by **ginni** » Wed Feb 28, 2007 3:27 pm

Hi! I shot with two bows, a hwarang from Thomas, 69 lbs@28" and a mongolian with fiberglass limbs - 85 lbs@28". I shot with thumbring, 34" draw, with 9,5-10 mm spruce arrows, over than 90 lbs spine. The stiffer work better. With one 115 spine arrow I never miss.

Shoting with low spine arrow I think is dangereous, I broke one (80 lbs spine) when I have shot and the back of the broken shaft have pop my left forearm; I was lucky to not be hurt.

I have more spine problems with the mongolian bow than the hwarang. The hwarang seems to be more tolerant, still it shot 60 meter over the mongolian.

Sorry for my bad english!

bustedarrow · Post by **bustedarrow** » Wed Feb 28, 2007 10:03 pm

ginni

What was the whole distance they shot?

ginni · Post by **ginni** » Wed Feb 28, 2007 10:13 pm

aprox 270 meters with the hwarang and 220 with the mongolian.

ginni · Post by **ginni** » Wed Feb 28, 2007 10:18 pm

I have shot with spruce arow, about 10 mm thick. I dont know the weight. Cannot found bamboo shafts or arrows

Adam Karpowicz · Post by **Adam Karpowicz** » Thu Mar 01, 2007 12:55 am

If the spine of arrows was measured in relation to the standard 28in, for a longer draw one should add about #5 per each additional inch of draw. It means for 34in, the best arrows is #5x(34-28)=#30 more spine. So it makes sense to use very stiff, high spined arrows for such draw lengths.

Adam