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240's sheep horn bow build with Tom Lucas
NorthHeart:
I also cut grooves in the nocks which really gave me confidence that the string would remain where it belongs.
NorthHeart:
Latest numbers. Drawing around 49# at 18.5” shoots 525gr at 143fps. 455gr goes 153fps. A couple days I’ve tested these numbers for consistency’s sake. Each time I braced the bow I had to make slight corrections to get positive tiller from the upper limb. I did this with either a bit of heat on the upper limb, or by simply pushing and holding the string up to the belly of the lower limb a few times at brace (to flex the upper limb more). It seems to be holding the shape better each day, requiring less correction upon stringing it. I’ll continue to keep shooting and monitoring it.
JNystrom:
Good job! Actually you got pretty decent fps out of it, cause as i've understood these tiny bows lack a bit of that long power stroke. :D
"It seems to be holding the shape better each day" - exactly! I've noticed the same thing, when you keep a longer brake from bracing a hornbow, it might take a lot of time to correct it, sometimes with heat.
For the next one i would try to make it bend more from close the handle up to the tips.
By the way, did you sinew bind the bow fully, or just in the nocks and handle?
NorthHeart:
JNY-i fully bound the bow, in order to hold the sinew backing down. I believe i did a few too many heat corrections or simply got it too hot and it started to separate in some area along the limbs-i didn't trust it. Now i do :OK
NorthHeart:
I did some work on the large horn bow over the past few weeks. Currently 72# at 19.5”. 😲 Quite a different bow than the smaller one. More to come...
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