Back To Top
Join Date: Mar 2003
Location: Tioga and Potter Counties
Re: helical fletching
Helical fletching goes back to the use of feathers- if they came off the right wing of a turkey, they would lay flatter on the shaft when applied with a right helix, and visa versa. Helical application with plastic vanes or even 2" Bohning Blazers began to impart a greater spin to the shaft during flight- using the ballistic application of rotation to stabilize flight.
I shoot all of my blazers- 2" for hunting and X2 vanes with a right helix. I found tighter groups and more consistant flight. I found that pure straight fletching was more susceptible to cross wind and was more like a knuckle ball- you never knew where it was ending up.
Somewhere in-between is the use of "Offset" where the vane is applied straight, with about a 3* offset from being straight down the shaft of the arrow. This also imparts more rotation, but not as much as helical.
The downside of severe helical vanes (like you get when you apply 5" feathers) is the arrow will drop due to deceleration faster once you get beyond 40 yards. The same wind resistance that causes rotation then causes a decrease in speed.
I don't buy pre-fletched arrows, but I think most arrow manufacturers are putting the vanes in an offset orientation.
Wishing I was at camp!