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Approximately how much weight will I gain...
George Tsoukalas:
Jim Hamm, of eternal memory, gave a formula in TBB 1.
If I remember correctly, it worked out to about 5# provided 1 inch is taken off each limb. He accounted for several factors.
It's too late for me to go searching. By now most bowyers have TBB 1 anyway.
Jawge
ssrhythm:
The bow was definitely too long and was well below max efficiency. I started making it for a very tall friend of mine and figured a longer bow would work out for him. It turned into my trade bow when my trade bow popped and time became an issue. I turned it into a pretty nice shooting selfbow that was very easy to shoot very accurately. It had a tough more hand shock that I was happy with, but it was a shooter. It started ticking the last session of shooting and arrow tuning I did before I was going to ship it.
It was 59# @28” and 67” tip to tip. My plan is to chase the next growth ring removing the compromised back. I’m hoping the weight reduction there will be a wash with improved efficiency and increased draw weight once I remove 2.5-3 inches from each tip, recurve the bow, and sinew back it.
If I end up with a 48# @ 28” or higher 62” sinew backed recurve, I’ll be very happy. I don’t know how much taking it down to the next ring is going to drop the draw weight, but if I gain ~ 15 lbs by taking off 3” per limb and a few pounds with a greater degree of recurve and a few lbs by the reflex the sinew should induce, I think it could work out……if I get really lucky.
Pappy:
I have had good luck over the years piking them, usually about 3 lbs per inch and if the tiller was good to start with it usually don't change it much, don't do it as much as I use to, gotten better at hitting weight but it has always been an option if the bow was long enough to accommodate the draw length I wanted. :) very minimum for me is double the draw length i want and add in non moving part/handle and fads.
Pappy
George Tsoukalas:
TBB 1 P. 283
Basically, 3/4" from each tip will raise the weight from 52# to 58#.
Jawge
bradsmith2010:
can u just sinew over the back as is,, more details and pics please
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