Shooting Bow arrows with my pneumatic

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SpudFiles Forum Index » Construction Materials/Ammo Discussion » Shooting Bow arrows with my pneumatic

Shooting Bow arrows with my pneumatic

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Extrusion

Posted: 10/26/2006 15:18 PM Post subject: Shooting Bow arrows with my pneumatic

Sergeant First Class

Joined: 29 Sep 2006
Posts: 147
72.81 Spud Bux

I was board today so i shot a bow arrow a few times at a box with my pneumatic then fit nicley in 1/2" barrel with a sabot on the back. The arrow was traveling at 245.1 FPS.

Pic of the arrow below.

Ok now i figured the fps with the following method.

Take the distance you shot the projectile from (25 feet in this case) and divide it bye the time in milliseconds it took for the projectile to leave the muzzle and hit the target (0.102 in this case) and the out put is the FPS the projectile was traveling at Very Happy

.

Here is the equasion

D = Distance from gun muzzle to target.
T = Time it took for the projectile to leave the muzzle and hit the target.

D (25) / T (0.102) = FPS (245.09803921568627450980392156863 Rounds to 245.1)

I used audacity to take the sound from the video and find out the time it took for the projectile to hit the target.

Now for the video kinda boring lol (Arrow was shot at 100psi).

http://s113.photobucket.com/albums/n209/Extrusion_2006/?action=view&cu rrent=Picture091.flv

Picture 089(small).JPG

Description:

The arrow

Filesize:

42.52 KB

Viewed:

46 Time(s)

Last edited by Extrusion on 10/26/2006 20:01 PM; edited 1 time in total

Hotwired

Posted: 10/26/2006 15:41 PM Post subject:

UK Spudgunner
Major General

Joined: 13 Oct 2006
Posts: 1800
3889.01 Spud Bux

Sounds like fun Smile

Try longer distances and see how it compares to a bow.

Btw, is the clip meant to be less than 1s long? I play it and get about 3 frames of a soap powder box then it finishes. Nothing happens to it either Sad

boilingleadbath

Posted: 10/26/2006 15:47 PM Post subject:

Moderator
<b>Moderator</b>

Joined: 12 Mar 2005
Posts: 1647
5491.22 Spud Bux

I'm assuming this was not with a foam sabot, as I don't think it'd be strong enough.

(oh, and to fend off idjits that would ask how you found velocity using said sound meathod... here it is)

Extrusion

Posted: 10/26/2006 19:43 PM Post subject:

Sergeant First Class

Joined: 29 Sep 2006
Posts: 147
72.81 Spud Bux

something fed' up when i uploaded the clip sorry ill try it at another place thanks blb and the sabot was a little plastic grape fitted on the end where it would normally go onto the bow string as far as distance well...when i shoot the arrow straight up with my 200$ bow i can see it as it goes all the way up and down with this i lost track of the arrow in about 2 seconds and that was the last i saw of it and the arrow was bright red so it wouldnt be that hard to see it in the air.

noname

Posted: 10/29/2006 15:13 PM Post subject:

Mr Vortex

Joined: 10 Apr 2006
Posts: 2520
2730.79 Spud Bux

I used about 3 paper towels as wadding to shoot an arrow and it got somewhere around 280 yards, I'm not sure what the speed was though. We lost sight of it about half a second after we shot it and it was exactly like that arrow, red with 2 red fins and 1 blue one.

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