Just an opinion, but here’s my 2 cents. The straight fletch would work fine with a field point because the field point would offer negligible rotational resistance/force unlike a fixed blade which will by nature be subject to turbulence/wind drift/rotational forces. As has been mentioned already, this bow launches arrows counterclockwise naturally which is why the left helical spins much sooner and at a higher rate. My guess is the right bevel broadhead provides a rotational force nearly equal to that imparted by the bowstring, and with no help from the straight fletch apart from drag, the arrow kind of knuckleballs, losing energy (speed and therefore trajectory) trying to stabilize while it wobbles. Would it maybe fly fine with EFOC? Sure, but would flight be more stable at the same FOC while spinning sooner? Absolutely. The Ashby stuff is great but so many people seem to forget that perfect arrow flight is one of the 12 factors. The correct fletching is a huge part of that.
Left helical/offset for Left single bevel...Right helical/offset for Right bevel. Your bevel acts as a "helical assist" when paired with fletch that is not in opposition. As far as serving or string wrap...they are right, but I never notice a difference when shooting trad to 20 yards or compound to 30+
Technically it's the direction the center serving is wrapped around the bowstring that determine the natural rotation direction, but since servings is wrapped the opposite direction as the strands in a bowstring, it's easier to just look at the bowstring to know which way an unfletched arrow will rotate. All the major bow brands, and almost all aftermarket strings twist like this \ which will cast an unfletched arrow CCW.
String and serving wrap is NOT the most important thing you need to focus on. When you get good enough at building perfectly matched arrows to perfectly tuned bows...you might see a difference at extended hunting ranges. This is something that Jake Kaminsky worries about...2 time Olympic silver medalist...he'll tell ya before every video, lol, but still good stuff.
Wrong again Bob. This video clearly demonstrates that the left helical spins at a fast rate than right helical likely due to the serving direction. Your arrow would have to counter the natural spin direction if you chose opposite helical. That’s an energy dump and it extends the time necessary to spin the arrow and stabilize flight
My ABB string results on ventum 33 were the opposite, right helical spun more right because of the way strings or serving was wrapped. When shooting left helical it took 9' before the arrow started to turn, less than 3' with the right helical, both were between 2 and 3 degree, enjoyed it. . Both were accurate at distance. Love watching them turn, wish my camera could record like yours. Next try to match string / serving to the helical. My original hoyt string were the opposite of the abb, results were the opposite.
Vanes stabilize, so if that means increased penetration...so be it. Penetration is best influenced by an arrows structural integrity, perfect flight, and broadhead sharpness.
@@B.A.Bassanglerthis is a rabbit hole and a cult following of the dumbest bs I’ve ever heard …. You don’t need an overspined arrow with 400 grains up front totaling 800 grains with 85 percent foc to make your bow shoot perfectly or to hunt with
So this is interesting watch Randy Ulmers video where he shoots a bear shaft that he put a mark on the 12 o’clock position and then he sees it rotates left or right depending on how your string is made. And that’s the helical you want if it goes counterclockwise you want left helical go if it goes clockwise you want right helical. So you want to go the direction that your string is sending the arrow which makes me think that your bow is inclined to send them counter clockwise so left helical is favorable My bow Also shoots counterclockwise . The problem is my two blade single bevel Broadheads are right helical. So I’m going to have to keep them the same in order for the two blade to rotate while cutting otherwise it’s counterintuitive working against each other
Details of MINUTIA. Anyone interested in single bevels should be more concerned about spine and FOC. It's Physics...the broadhead literally PULLS the arrow through the animal. Learn to build >19% FOC arrows to let the single bevel do what it was designed to do...SPIN on impact to create a larger wound channel than without.
Yes what you say is true it’s all based on Dr. Ashby‘s science of single bevel broadhead technology. The person I think about who comments the most and contributes the most is ranch fairy on his RUclips channel. Greater than 19% FOC and heavyweight arrows
Thank you for your work and posting these videos which speak for themselves and show the error of much conventional wisdom regarding these topics..
I greatly appreciate this video...
Why purposely pair a right helical and left bevel and vice versa? Should be right with right and left with left
Any interest in testing Ethics spinning inserts? Could be interesting? Thanks for doing these.
Another great video!
My archery shop only does bear tune in and I brought up the rotation bare shaft thing to him and it was interesting. And Randy Ulmers the man
Just an opinion, but here’s my 2 cents. The straight fletch would work fine with a field point because the field point would offer negligible rotational resistance/force unlike a fixed blade which will by nature be subject to turbulence/wind drift/rotational forces. As has been mentioned already, this bow launches arrows counterclockwise naturally which is why the left helical spins much sooner and at a higher rate. My guess is the right bevel broadhead provides a rotational force nearly equal to that imparted by the bowstring, and with no help from the straight fletch apart from drag, the arrow kind of knuckleballs, losing energy (speed and therefore trajectory) trying to stabilize while it wobbles. Would it maybe fly fine with EFOC? Sure, but would flight be more stable at the same FOC while spinning sooner? Absolutely. The Ashby stuff is great but so many people seem to forget that perfect arrow flight is one of the 12 factors. The correct fletching is a huge part of that.
great video thanks
Left helical/offset for Left single bevel...Right helical/offset for Right bevel. Your bevel acts as a "helical assist" when paired with fletch that is not in opposition. As far as serving or string wrap...they are right, but I never notice a difference when shooting trad to 20 yards or compound to 30+
Good video
Can you explain what your findings mean to you? Very interesting
Does it depend on the way the strings are twisted? And if so how would you tell what way they are twisted on different bows and string manufacturers?
Technically it's the direction the center serving is wrapped around the bowstring that determine the natural rotation direction, but since servings is wrapped the opposite direction as the strands in a bowstring, it's easier to just look at the bowstring to know which way an unfletched arrow will rotate. All the major bow brands, and almost all aftermarket strings twist like this \ which will cast an unfletched arrow CCW.
String and serving wrap is NOT the most important thing you need to focus on. When you get good enough at building perfectly matched arrows to perfectly tuned bows...you might see a difference at extended hunting ranges. This is something that Jake Kaminsky worries about...2 time Olympic silver medalist...he'll tell ya before every video, lol, but still good stuff.
Wrong again Bob. This video clearly demonstrates that the left helical spins at a fast rate than right helical likely due to the serving direction. Your arrow would have to counter the natural spin direction if you chose opposite helical. That’s an energy dump and it extends the time necessary to spin the arrow and stabilize flight
My ABB string results on ventum 33 were the opposite, right helical spun more right because of the way strings or serving was wrapped. When shooting left helical it took 9' before the arrow started to turn, less than 3' with the right helical, both were between 2 and 3 degree, enjoyed it. . Both were accurate at distance. Love watching them turn, wish my camera could record like yours. Next try to match string / serving to the helical. My original hoyt string were the opposite of the abb, results were the opposite.
Shows vane induced spin is preferred for energy to push for penetration
Vanes stabilize, so if that means increased penetration...so be it. Penetration is best influenced by an arrows structural integrity, perfect flight, and broadhead sharpness.
Watch the Ranch Fairy vids on RUclips...also join a FB group like Heavy Arrow Hunt Club on FaceBook...BETTER than forums...trust me!
@@B.A.Bassanglerthis is a rabbit hole and a cult following of the dumbest bs I’ve ever heard …. You don’t need an overspined arrow with 400 grains up front totaling 800 grains with 85 percent foc to make your bow shoot perfectly or to hunt with
So this is interesting watch Randy Ulmers video where he shoots a bear shaft that he put a mark on the 12 o’clock position and then he sees it rotates left or right depending on how your string is made. And that’s the helical you want if it goes counterclockwise you want left helical go if it goes clockwise you want right helical. So you want to go the direction that your string is sending the arrow which makes me think that your bow is inclined to send them counter clockwise so left helical is favorable
My bow Also shoots counterclockwise . The problem is my two blade single bevel Broadheads are right helical.
So I’m going to have to keep them the same in order for the two blade to rotate while cutting otherwise it’s counterintuitive working against each other
Details of MINUTIA. Anyone interested in single bevels should be more concerned about spine and FOC. It's Physics...the broadhead literally PULLS the arrow through the animal. Learn to build >19% FOC arrows to let the single bevel do what it was designed to do...SPIN on impact to create a larger wound channel than without.
Yes what you say is true it’s all based on Dr. Ashby‘s science of single bevel broadhead technology. The person I think about who comments the most and contributes the most is ranch fairy on his RUclips channel. Greater than 19% FOC and heavyweight arrows