Difference between offset and helical
08-18-2003, 03:51 PM
#1
Nontypical Buck
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Difference between offset and helical
Another dumb question 
Would someone explain what the difference is between these two fletching options as they relate to the arrow shaft? For some reason, I can' t quit thinking that the round nature of the shaft versus the flat surface of the vane base when applied " offset" would automatically impart a helical to the adhered vane.
What am I missing here?
Would someone explain what the difference is between these two fletching options as they relate to the arrow shaft? For some reason, I can' t quit thinking that the round nature of the shaft versus the flat surface of the vane base when applied " offset" would automatically impart a helical to the adhered vane.
What am I missing here?
08-18-2003, 03:56 PM
#2
Giant Nontypical
Join Date: Feb 2003
Posts: 9,175
RE: Difference between offset and helical
I can' t quit thinking that the round nature of the shaft versus the flat surface of the vane base when applied " offset" would automatically impart a helical to the adhered vane.
08-18-2003, 03:58 PM
#3
Nontypical Buck
Join Date: Feb 2003
Location: WEST PALM FLORIDA
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RE: Difference between offset and helical
Range there are no dumb questions just dumb answers or something like that 
heilical looks like threads on a screw . Offset goes in a straight line but is canted to the side .
heilical looks like threads on a screw . Offset goes in a straight line but is canted to the side .
08-18-2003, 04:56 PM
#4
Boone & Crockett
Join Date: Feb 2003
Location: Lehigh County PA USA
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RE: Difference between offset and helical
These guys are right on the money. A helical fletch wraps around the arrow shaft while an offset fletch is actually straight but not at the pinnacle of the arch of the arrow (cross-sectional view). A picture would be very handy at this point.
08-19-2003, 07:39 AM
#6
Giant Nontypical
Join Date: Feb 2003
Posts: 9,175
RE: Difference between offset and helical
I think I need to see that picture too.... If you angle the fletch off the top of the curve of the shaft while it' s in the jig, aren' t you just putting it on top of the curve at a different angle of rotation?
08-19-2003, 08:32 AM
#7
Nontypical Buck
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RE: Difference between offset and helical
Ok, you made me go look at my arrows
Standing behind the nock, looking down the shaft, the front edge of my right wing 4" fletch is about 1/8" of an inch to the right of the back edge of the fletch. The base is in a straight line, no twisting to it other than due to the curve of the shaft.
What the heck is that?
Standing behind the nock, looking down the shaft, the front edge of my right wing 4" fletch is about 1/8" of an inch to the right of the back edge of the fletch. The base is in a straight line, no twisting to it other than due to the curve of the shaft.
What the heck is that?
08-20-2003, 12:17 PM
#9
Boone & Crockett
Join Date: Feb 2003
Location: Lehigh County PA USA
Posts: 12,157
RE: Difference between offset and helical
I am glad I got called on that because my wording could have led someone to believe I was referring to trajectory when I made reference to the " arch" of the arrow.
Arthur,
Good question and I am glad you brought it up. Your logic is sound and I would assume much the same without actually seeing it. However, the width of the curve of the arrow in relation to the width of the fletching allows the fletching to be " offset" to the true center of the arrow. In other words one could consider it parallel to a straight fletch. Since the arrow surface is relatively wider than the fletching width you can still place it parallel to a straight fletch on that portion of the surface of the arrow while still not turning it into a straight fletch but from a different angle.
The picture above is somewhat helpful but I am going to see if I can put one together myself.
Arthur,
Good question and I am glad you brought it up. Your logic is sound and I would assume much the same without actually seeing it. However, the width of the curve of the arrow in relation to the width of the fletching allows the fletching to be " offset" to the true center of the arrow. In other words one could consider it parallel to a straight fletch. Since the arrow surface is relatively wider than the fletching width you can still place it parallel to a straight fletch on that portion of the surface of the arrow while still not turning it into a straight fletch but from a different angle.
The picture above is somewhat helpful but I am going to see if I can put one together myself.
