I was watching Levi Morgans video on how a bow naturally spins an arrow. My bow shoots a bare shaft and spins to the left. So i will be doing a left offset. My question is will it shoots any bare shaft with a left spin or will that change with different spine arrows. I assume all would be the same since it the bow causing the natural spin but thought i would check to be sure.
An arrows natural spin from bow
Xringindy
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I was watching Levi Morgans video on how a bow naturally spins an arrow. My bow shoots a bare shaft and spins to the left. So i will be doing a left offset. My question is will it shoots any bare shaft with a left spin or will that change with different spine arrows. I assume all would be the same since it the bow causing the natural spin but thought i would check to be sure.
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Do some research on projectile stabilization. An arrow does not need to spib in order to stabilize ... just basic physics
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More directly it comes from the center serving layout but that is dictated by the twist of the string. When you twist a string clockwise, to properly serve the string the serving will lay out low on the left of the string and high on the right like this / as it stacks up the string (obviously that angle is much more shallow but you get the idea. The nock of the arrow is a press fit so when the tabs of the nock slide off the string, they "press" into the grooves between the wraps of serving and the friction tries to force the nock to fill the gaps between the wraps, making the nock rotate slightly to become parallel with the angle of the wraps. This causes the arrow to rotate counterclockwise, low on left and high on right. It's opposite for a counterclockwise twisted string of course.
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My theory, you want to fletch opposite of natural rotation. Part, especially right at launch, of the stabilization of an arrow comes from the drag the fletch produces, and the fletch will be at it's greatest drag when it's working hardest to counteract a rotation opposite it's [the fletch's] desired spin. Think Nestly has posted some slow-mo YouTubes demonstrating this theory... But then I don't think anyone has definitely proven one way or the other [scientifically] one orientation is more accurate than the other.
Yep..I watched a video of arrow flight..I always thought that an arrow would spin quite a few RPM's..In the video an arrow would make one rotation in 30 yards..With that being the case I wouldn't think straight/left/right would make any difference at all
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Took a super slow motion of my arrow flight. At release for what appears to be 20 yards the arrow makes about a full twist left, stops, and rapidly spins right.
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Sent from my SM-N960U1 using Tapatalk
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For all you "experts" that have not actually experimented with this, I assure you it does make a difference. I have been testing this since nesty posted his high speed video of an arrow stopping in mid air and changing direction when fletched in the wrong direction, specificly what effect it would have on a single bevel 200g Cutthroat (worst case I admit). From a perfectly tuned bow with natural CCW spin my arrow was 13 fps faster at 20 yards than a CW helical and rt bevel broad head and the arrow hit 4" low and 2" to the left. Randy Ulmer and Levi Morgan have both made videos on this subject, and anybody that has watched nesty's video and still doesn't believe must be a card carrying member of the flat earth society.
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I agree with Huntinsker it is determined by center serving twist. My arrows spin left on my barebow recurve about 1/4 of a turn in 10+ yds, i.e. not much at all, my trad bow spins right about the same sooo bottom line is that it does not make much difference to the way you fletch. Just get all the fletchs spinning in the same direction
. I read once that you want the arrow to spin clockwise cause that would tighten the tips on target strike- didn't make much difference to me, they still loosened. So do what ever you want it will be fine.
. I read once that you want the arrow to spin clockwise cause that would tighten the tips on target strike- didn't make much difference to me, they still loosened. So do what ever you want it will be fine.
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If arrows are spin stabilized, what's the formula for the twist rate?
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It's always fun to watch these threads about arrow rotation spin out of control. (see what I did there?)
You'll get 500 responses on this and you'll spend hours and hours of testing and comparing results trying to figure out which impassioned response is actually based in facts. After my 20 years of wandering around in this rabbit warren I've come to the conclusion that there isn't enough of an advantage to any setup to warrant another moment fussing over it but that's my personal conclusion. he he he I think you'll need to follow your own path.
You'll get 500 responses on this and you'll spend hours and hours of testing and comparing results trying to figure out which impassioned response is actually based in facts. After my 20 years of wandering around in this rabbit warren I've come to the conclusion that there isn't enough of an advantage to any setup to warrant another moment fussing over it but that's my personal conclusion. he he he I think you'll need to follow your own path.
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I used to think that I was doing it wrong (clockwise spin on bareshaft and counter on fletches) but really it helps your fletchings "catch" the air better to have them against the natural rotation. also, hard helical will make is catch/ spin faster than a light offset.
If you subscribe to the "go with the natural spin" theory, fletch them that way. If you subscribe to the "it's good to go against the natural spin" theory, fletch them that way.
It may or may not matter, either way, but the confidence gained from doing what you believe will help your shooting will actually help your shooting.
It may or may not matter, either way, but the confidence gained from doing what you believe will help your shooting will actually help your shooting.
30 plus years ago , I saw this from a Canadian Coach visiting our club, worked with some of the local archers and a group of the Para Olympic archers.
His explanation was similar to what is being said here, to fletch in the same direction of the natural twist of the arrow coming out of the bow, he suggested a 1 in 6 twist, so otherwise one complete rotation for 6 arrow lenghts, weird how I can remember this
I do remember it was tough to get this much rotation,
I also think the amount of rotation/ drag/ or arrow stabilization due to fletching also should be considered in varying amounts depending on your application, so hunting, indoor spots or say shooting 70 meters..may require different different amouts of twist.
His explanation was similar to what is being said here, to fletch in the same direction of the natural twist of the arrow coming out of the bow, he suggested a 1 in 6 twist, so otherwise one complete rotation for 6 arrow lenghts, weird how I can remember this
I do remember it was tough to get this much rotation,
I also think the amount of rotation/ drag/ or arrow stabilization due to fletching also should be considered in varying amounts depending on your application, so hunting, indoor spots or say shooting 70 meters..may require different different amouts of twist.
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100% agree.
I did an experiment with this and found it made no difference at all so should I return my card somewhere? Seriously man its one thing to give your opinion but you really hang yourself out there when you make statements like that.
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