Do you worry about Front of Center?

Crossbow Hunting
Walkin
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Re: Do you worry about Front of Center?

Post by Walkin »

Doesn't take make muck to make me feel goog.

Hey ehn: Sarcee is having a horn measuring night toniit at 7. Glamorgan Cummunity Center. Can u make it? Do!

Gracias amigo, on the real
Joe
ehntr
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O/T

Post by ehntr »

Walkin wrote:Doesn't take make muck to make me feel goog.

Hey ehn: Sarcee is having a horn measuring night toniit at 7. Glamorgan Cummunity Center. Can u make it? Do!

Gracias amigo, on the real
Joe
Big fingers on small keyboard (phone) lol?

Not going to Sarcee, never been there. EPS 3D shoot 25 April, crossbows welcome.
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vixenmaster
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Re: Do you worry about Front of Center?

Post by vixenmaster »

I will steal anudder man's example. Take a ships Bow as the BH n the Rudder are yer vanes.
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Lake shooter
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Re: Do you worry about Front of Center?

Post by Lake shooter »

Man...... This is getting way into the weeds. Some folks definitely try to make it rocket science, brain surgery or all of the above, but there's no need to. If the darn things shot good, that's all you need.

I realize that some of y'all are tinkerers and enjoy the mental calisthenics, but that doesn't necessarily mean that the rig will shoot any better in the end. I used to be this way...... But grew out of it! Now, I like to shoot as little as it takes to make sure things are still dead on, and go hunting! 8) Just me though, I choose to keep it simple these days.
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NEPAbowhunter
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Re: Do you worry about Front of Center?

Post by NEPAbowhunter »

Walkin wrote:Here's some more info to fry your brain with.

An arrow is a rocket; a coasting rocket whose fuel burnt out when it lost contact with the bowstring.

In a rocket there are 2 main points of concern; the CG (center of gravity) and the CP (center of pressure). The CG is where the actual rocket balances if you were to put it horizontally on a knife edge. If you make a 2 dimensional cutout of the rocket on a stiff piece of cardboard and then place that cutout horizontally on a knife edge, the CP is where the rocket profile cutout will balance.

Rockets rotate about the CG axis. All resistance forces that stabilize a rocket like the air pressure hitting the body and fins(fletchs) act at the CP.

As long as the CP is behind the CG the rocket will try to stabilize itself and keep its head into the direction of travel. CP ahead of the CG and it will tumble head over heels.

The distance that the CP is from the CG is a force moment; it is a torque force. That equates to the amount of force that the rockets' fins or arrows' fletch in this case, contribute; bigger fins equals more stabilization force equals more drag and possibly over stabilization, if it becomes a high frequency oscillation.

So you see, Front of Center is an over simplified way for the average Joe to think about arrow flight.

Stay tuned, next weeks discussion will include hot topics such as spin stabilization and the ever present northern hemispherical Coriolis Effect; bring your Tylenol.

Worried,
Joe
:shock: You fried mine! :lol:
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nchunterkw
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Re: Do you worry about Front of Center?

Post by nchunterkw »

Walk in'
Loved it. Feed me more. I like to understand better. I think my understanding is close but not exactly right. Waiting for next weeks episode.
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