Topic: korean measurement units
More common conversions:
1 don = 57.872 grains = 3.75 grams
4 don = 231.488 grains = 15 grams
4.5 don = 260.4240 grains = 16.875 grams
5 don = 289.360 grains = 18.75 grams
5.5 don = 318.296 grains = 20.625 grams
6 don = 347.2 grains = 22.5 gram
6.5 don = 376.2 grains = 24.375 gram
7 don = 405.1 grains = 26.25 gram
7.5 don = 434 grains = 28.125 gram
8 don = 463 grains = 30 gram
8.5 don = 491 grains = 31.875 grams
9 don = 520.848 grains = 33.75 grams
9.5 don = 549.784 grains = 35.625 grams
10 don = 578.72 grains = 37.5 grams
I tried to keep the error of inches within 0.05" or so. I hope. I think the length is nock groove to tip of point. Or maybe it's total length... nock groove to sangsa (I guess normal western length) would be around 1.3" less I think. And draw length around 0.8" less than the arrow length to tip of point here (I get plenty close to 32" d/l with 7.5 chi arrows) .
2ja 3chi = 69.69cm = 27.437"
2ja 3.5chi = 71.205cm = 28"
2ja 4chi = 72.72cm = 28.6"
2ja 4.5chi = 74.235cm = 29.2
2ja 5chi = 75.75cm = 29.82"
2ja 5.5chi = 77.265cm = 30.4"
2ja 6chi = 78.78cm = 31"
2ja 6.5chi = 80.295cm = 31.61"
2ja 7chi = 81.81cm = 32.21"
2ja 7.5chi = 83.325cm = 32.8"
2ja 8chi = 84.84cm = 33.4"
2ja 8.5chi = 86.355cm = 34"
2ja 9chi = 87.87cm = 34.6"
2ja 9.5chi = 89.385cm = 35.2"
2ja 10chi = 90.90cm = 35.78"
2ja 10.5chi = 92.415cm = 36.38"
2ja 11chi = 93.93cm = 37"
1 ja is 30.3cm. 1chi is 3.03cm.
1st number marked in those Korean carbon arrows is 2 ja + n chi
Generally if the number looks like 70 it actually is 7.0? and thus 2 ja + 7 chi = 2*30.3cm + 7*3.03cm = 81.81cm?
2nd number is weight in don. 6.5 don = 376.168 grain
1 don = 57.872 grain
Am I right?
Thanks