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Author Topic: My version of Air Archery  (Read 2244 times))

Offline Nomadic Pirate

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Re: My version of Air Archery
« Reply #40 on: February 04, 2020, 01:09:16 PM »
Hey Manny, Craig here. When Air Archery hunting, what season type is it considered? Bow or Air rifle? By the way, how is that pellet trimmer
working out for you?  Craig

Craig, the pellet trimmer is fantastic, precise and easy to use,.....Thanks


Well, here airguns are only aloud in Private lands,
so hunting regulations for state lands don't apply.
  • North Shore Oahu Hawaii
Evanix REX Carbine         .357  180 FPE
Evanix REX Mini-Carbine    .357  150 FPE
Evanix REX Mini-Carbine II  .357  150 FPE
Evanix RainStorm  II           .30  100 FPE
Evanix RainStorm  II          .30   85  FPE
Evanix Storm Bushgun      .30   70  FPE
Evanix MAX-ML               .25   65  FPE
Evanix RainStorm II          .25   60  FPE
Evanix Storm II Model 70     .25   50  FPE

Offline SilentMatt

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Re: My version of Air Archery
« Reply #41 on: February 04, 2020, 03:38:06 PM »
I bet there is a lot less bore friction with the bolts compared to a pellet and definitely compared to a slug.
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Offline Wolfer

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Re: My version of Air Archery
« Reply #42 on: February 14, 2020, 03:32:25 AM »
As always your hunting setups are bad !!!. Aren,t we suppose to be dedicated traditional archers LOL.    Mike
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Offline Nomadic Pirate

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Re: My version of Air Archery
« Reply #43 on: February 14, 2020, 12:53:44 PM »
As always your hunting setups are bad !!!. Aren,t we suppose to be dedicated traditional archers LOL.    Mike


You are soooo right :) , but this thing is so Kool, so Baad Azz :) :) :)

Anyway, I don't do target shooting with airguns,
but I get my target shooting fix by shooting 200-300 arrows daily, at the moment I'm shooting an Osage bow I made several years ago and usually take it hunting if I can once a week or at least once every 2 weeks :)
  • North Shore Oahu Hawaii
Evanix REX Carbine         .357  180 FPE
Evanix REX Mini-Carbine    .357  150 FPE
Evanix REX Mini-Carbine II  .357  150 FPE
Evanix RainStorm  II           .30  100 FPE
Evanix RainStorm  II          .30   85  FPE
Evanix Storm Bushgun      .30   70  FPE
Evanix MAX-ML               .25   65  FPE
Evanix RainStorm II          .25   60  FPE
Evanix Storm II Model 70     .25   50  FPE

Offline Bill G

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Re: My version of Air Archery
« Reply #44 on: November 29, 2020, 12:47:16 PM »
Manny there addition to the explanation....  Caliber cross section. Pound per square in translates to force. Acceleration =force x mass.
Cross section of 1/2" is .196in^2 . Multiplied by psi give Force pushing the arrow. Compare that to the area of the back of a pellet or slug. The arrow certainly has much less static friction (break away friction). The efficiency of acceleration offset compared to traditional projectile is why the energy is greater and the velocity so vastly different. Air consumption is greater since the larger tube is less restrictive  than a traditional barrel. Higher volumetric flow at the same psi. I'm not certain that the valve stays open longer or not.  I'd have to sit down and math the *(&^ out of it to be sure. I would imagine that if the tube were longer say 24in, those arrows would reach close to 700fps.  Supporting the broadhead in the center of the tube would be another hurdle  though. Any way you go about it , those are superior to any crossbow I've come across.
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Offline Nomadic Pirate

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Re: My version of Air Archery
« Reply #45 on: November 29, 2020, 03:06:51 PM »
But.......

The arrow is actually shot out of the same barrel that shoots bullets and pellets  ;D ;D ;D

The broadhead is supported in the center of the barrel by a conical aluminum insert that sits in the crown of the barrel.


The was increase in FPE and decrease of shot count also happens when I use the 190gr bullet compared to the 82gr JSB, and probably the bullet creates significantly more friction then the pellet.


But I love to hear experts try to crack this one, we can learn something every day  ;D
  • North Shore Oahu Hawaii
Evanix REX Carbine         .357  180 FPE
Evanix REX Mini-Carbine    .357  150 FPE
Evanix REX Mini-Carbine II  .357  150 FPE
Evanix RainStorm  II           .30  100 FPE
Evanix RainStorm  II          .30   85  FPE
Evanix Storm Bushgun      .30   70  FPE
Evanix MAX-ML               .25   65  FPE
Evanix RainStorm II          .25   60  FPE
Evanix Storm II Model 70     .25   50  FPE

Offline Marco25

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Re: My version of Air Archery
« Reply #46 on: January 27, 2021, 11:18:49 PM »
Hi Manny
  Great information on the Rex with arrows. If you could give me a little more information. I have the 19 barrel model and when you cut down the bolts do you cut the front and install a new insert for the broadhead?. And do you run with the end cap off to get to the barrel or just but the aluminum piece up against the end cap of the shroud.

     Thank you for any information.        Marco25
  • USA, CA, Moreno Valley

Offline Nomadic Pirate

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Re: My version of Air Archery
« Reply #47 on: January 28, 2021, 01:13:43 PM »
Hi Manny
  Great information on the Rex with arrows. If you could give me a little more information. I have the 19 barrel model and when you cut down the bolts do you cut the front and install a new insert for the broadhead?. And do you run with the end cap off to get to the barrel or just but the aluminum piece up against the end cap of the shroud.

     Thank you for any information.        Marco25

Marco, you have to make your calculations,

take the aluminum adapter off, see exactly where it sits in the barrel, measure how much it overlaps on the bolt, measure how much the bolt extends out the barre ( you can have the nock quite close to the valve when taking final measure )

then make your calculations, cut the bolt and re-glue the aluminum adapter.
  • North Shore Oahu Hawaii
Evanix REX Carbine         .357  180 FPE
Evanix REX Mini-Carbine    .357  150 FPE
Evanix REX Mini-Carbine II  .357  150 FPE
Evanix RainStorm  II           .30  100 FPE
Evanix RainStorm  II          .30   85  FPE
Evanix Storm Bushgun      .30   70  FPE
Evanix MAX-ML               .25   65  FPE
Evanix RainStorm II          .25   60  FPE
Evanix Storm II Model 70     .25   50  FPE

Offline Marco25

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Re: My version of Air Archery
« Reply #48 on: January 28, 2021, 05:40:20 PM »
Got it. Thanks for the help Manny
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Offline avator

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Re: My version of Air Archery
« Reply #49 on: July 12, 2021, 01:03:59 PM »
Well Manny I was wrong I looked into the inline valve system and your right back pressure can cause higher dwell in this system and thus higher FPE output and lower shot count due to higher dwell I guess that explains a lot.
I must be getting a better understanding of how this stuff works because this was the first thing that came to mind when I was reading this thread and Manny posed the question.
Now I feel like I know just enough to be dangerous...  :o :-\
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