tested some different offsets(pics)

Polecat · Post by **Polecat** » Thu Jul 26, 2007 9:22 pm

Good post C F , keep us up to date.

Esox · Post by **Esox** » Fri Jul 27, 2007 7:10 am

Great shooting!!...How about doing it again but with your broadheads and let us know how they fly... Obviously you've got it all working right... Good Job!!!

crazyfarmer · Post by **crazyfarmer** » Fri Jul 27, 2007 8:46 am

Esox wrote:Great shooting!!...How about doing it again but with your broadheads and let us know how they fly... Obviously you've got it all working right... Good Job!!!

I plan on it.. im gonna buy a cheap target first so I dont mess the block one all up

Pydpiper · Post by **Pydpiper** » Sat Jul 28, 2007 10:32 am

Fletching an arrow straight is a common practice with target shooters, I would guess because of the lack of outside influence on the arrow in motion, like wind. An arrow does not come out of a crossbow (or any other bow) straight, it will be oscillating and needs to be stabilized.
Make no mistake, an arrow needs to spin to do it's job properly in less than perfect conditions, a spinning arrow becomes it's own force opposed to being prone to disturbances between the bow and the target. It is called gyroscopic inertia, it is your best friend in archery. This will become evident when a broadhead is used (provided the arrow is true) or if the arrow hits an obstruction like an inconsistent side wind or even a leaf.

To see this force in action try to throw a Frisbee without spinning it and see where it goes, or sitting on a bicycle that is not in motion.. The wider the object the more important this force becomes. A spinning top is another good example, the mass of the object is again away from the axis, try to spin a pencil on it's tip and the spinning motion has little effect on it's ability to remain upright, or straight.

Then comes matching your spin to the size of the broadhead, again assuming everything is perfectly symmetrical (straight shaft, balanced broadhead, true spine, equal fletching...) Each broadhead will benefit from a different degree of fletching, or fletching size. As the outside force gets farther from the axis (larger broadheads) it becomes increasingly important to get the shaft spinning and spinning fast. The faster the arrow is spinning the more important it is to keep your broadheads balanced, any variations are amplified as it turns. This is far less apparent in a perfectly symmetrical Field point. This is part of the reason mechanical broadheads are more prone to shooting like a field point.

Gyroscopic inertia, take advantage of it, it's necessary and it's free!

ranger · Post by **ranger** » Sat Jul 28, 2007 10:58 am

yep what you said.......distance makes abig differance in how you fletch..

R.J. · Post by **R.J.** » Sat Jul 28, 2007 12:38 pm

Good post ... good info .... good shooting ! .... I have found the same over the years .... unless you are splitting hairs , all will get you into the boiler room at responsible distances ...

Pydpiper · Post by **Pydpiper** » Sat Jul 28, 2007 7:25 pm

I agree!
You don't even need fletching to hit a pie plate at 30 yards, but if you choose to be the determining force of your arrow you, and you alone need to be the the one in control of the variables..