Originally Posted by
BuckAlley
Never considered these, doubt I ever will. I do all my own refletching to the offset that works for my setup & broadheads. I wonder if the FOB's would get the arrow spinning as soon as offset vanes do.
The connecting fins of the FOBs have a 3 or 4 degree offset (can't remember which), and since they are rigid and won't flex/buckle/bend under force like plastic vanes will, I would think they would get the arrow spinning as fast or faster than plastic vanes.
EDIT: from their website:
"What makes FOBs spin?
The internal spin fins™ have a 4° offset. Being a semi-rigid airfoil the spin fins™ provide more torque to spin an arrow than conventional fletching."
My biggest concern would be arrow penetration. Obviously it appears the FOB's come off the end of the shaft on impact, also taking your nock off. Regardless that alone would have to slow some penetration. I'm not for slowing any amount of penetration, regardless how small.
Which do you think slows penetration more:
a) dragging vanes through the entire body of a deer as they increase the diameter of the shaft (and thus the amount of friction) that has to pass through the body, or
b) popping a FOB off the back end (easy to do with your hand with slight pressure), thus keeping the arrow shaft the same diameter (smaller than shaft+vanes) and less friction than the shaft+vanes will have?
Plus, you'll know where to start tracking, since your FOB will be laying where your deer was shot.
EDIT: from their website:
"What happens when a FOB equipped arrow passes through a target or animal?
The FOB is held in place by the press in ICS nock that is provided with your arrow. When the arrow passes through, the FOB and nock pop-off as a unit. This increases penetration, because the force required to pop the FOB off, is less than that of the fletch pulling through. A bonus is that when you are hunting the FOB will mark the spot the animal was hit. See demo video of the FOB pop off in action."