Main Discussion Area > English Warbow
Hazel longbow, 100# @ 28"
joachimM:
--- Quote from: FilipT on October 20, 2017, 10:21:05 am ---Slightly related topic for which I don't want open new thread.
--- End quote ---
Mmh, pretty confusing to have two completely different topics in the same thread... I was hoping to see the hazel bow, finally ;-)
This said, I don't bother too much about matching theoretical spine to a bow's poundage. What matters, IMO, is the acceleration an arrow experiences when it is launched. A 50# bow shooting an arrow at 150 fps will need a much lower spine than if it shoots the same arrow at 200 fps.
The general rule (500 spine for a 50# bow) likely comes from the fact that most normal (hunting) bows will shoot about the same speed (160-170 fps at 10 gpp), and shoot a certain grain per poundage arrows. In primitive bows, we tend to use 10 gpp as a standard for comparison, gf folks often use 9 gpp, and wheelies use 5 gpp...
You gotta find out what spine (or particular arrow) shoots best for each particular bow.
FilipT:
I live in Croatia, there are no wild geese here. Nobody I know deals with poultry so I cannot get domestic geese and turkey, so the ebay. Same thing is with horns.
I bought heat gun today and tomorrow is judgement day. Either I will correct the string alignment and reflex or it will break.
FilipT:
I managed to heat three areas on bow and correct it as far as I could. Also I removed slight twist from one limb. Now the offset from center is 6,5 mm which I think is manageable and will not rotate bow in my hand (or will it?). I couldn't get it more corrected as this bow had really resisted movement even when heated thoroughly. Below are before and after pictures. Red line represents string alignment.
BEFORE CORRECTION
AFTER CORRECTION
Strichev:
Good, good. I'm following this.
Hawkdancer:
Del,
I thought bow making is a religion! It is certainly addictive! And I am barely started! :BB
Hawkdancer
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