Main Discussion Area > Flight Bows
Flight Arrows
DC:
--- Quote from: willie on October 25, 2020, 02:20:05 pm ---can you describe your target? you might need to slow the arrow easier.
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It's a Bulldog.
--- Quote from: Badger on October 25, 2020, 03:02:27 pm --- You are not looking for several little things that will get you 10 yards each, this is nothing like bow building, you are looking for one little thing that will get you a 100 yards. If you can see you arrow fly it is most likely a bad shot. I think you need to have your arrows closer to 200 grains and then figure the spine you need. I believe 50# is too much spine regardless of how you say they flew. You can loose a lot of velocity in the first 10 ft which takes about 1/25 of a second. If your bow is close to center shot it would need more spine than 1" deflection at 22 inch centers and 2# weight.
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This is what's killing me. To get down to 200 grains on a 28" arrow the spine is 30-35#and the arrow flies sideways. I can't get by that. I need a clue and I haven't got one ;)
Badger:
When you say it leaves sideways? Can you see it leave or are you looking at an elongated width on your paper hole?
Badger:
How long are you making your tapered point?? I didn't realize you were using 28" arrows, I was thinking over 24" arrows
DC:
--- Quote from: Badger on October 25, 2020, 09:44:15 pm --- When you say it leaves sideways? Can you see it leave or are you looking at an elongated width on your paper hole?
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I can see them flying off sideways. I've abandoned paper testing until I can get somewhere close to good flight. I'll try it again for fine tuning.
--- Quote from: Badger on October 25, 2020, 09:51:19 pm --- How long are you making your tapered point?? I didn't realize you were using 28" arrows, I was thinking over 24" arrows
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I'm using that museum picture of a Turkish arrow only deviding it into 7" sections. Sorry about the confusion, my fault, I've been jumping from pillar to post and expecting you guys to follow me. Yeah I'm trying to get my 50#@28" bow to shoot far ;D When you suggested that I make a 50# bow were you meaning 50#@25"?
Anyway that may explain why I've been so confused.
So, as to making flight arrows for a 50#@28" bow. I know the bow shoots well with 400 grain arrows, 50-55#spine and about 75-100 grain points. If I'm going pointless(there's a joke in there somewhere) using the 5# of spine for every 25 grains of point weight removed rule I should have a spine of 35-40#. That doesn't work. 35# arrows fly like crap. Does the rule get kid of iffy at low tip weights?
So should I make a 50# spine arrow with no tip or fletching and just keep planing it down until it flies well to arrive at a suitable spine and then start thinking about aerodynamics?
willie:
--- Quote ---using the 5# of spine for every 25 grains of point weight removed rule I should have ....
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this is a rule of thumb for approximating dynamic spine from static spine with hunting weight arrows.
--- Quote ---So should I make a 50# spine arrow with no tip or fletching and just keep planing it down until it flies well
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this method seems more reasonable with the extreme weight reduction and tapering going on with these flight arrows
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