Special Ops Paintball: Ported A-5 Flatline. - Special Ops Paintball

Jump to content


  • (2 Pages)
  • +
  • 1
  • 2
  • You cannot start a new topic
  • You cannot reply to this topic

Ported A-5 Flatline. Where to put the holes. Rate Topic: -----

#1 User is offline   Bone37 

  • The Chicago 37th S.P.S. Heavy Gunner
  • PipPipPip
  • Group: Members
  • Posts: 665
  • Joined: 26-August 06
  • Gender:Male
  • Location:Humboldt Park , Chicacgo
  • Brigade Name:Bone37

Posted 30 August 2011 - 07:46 PM

So a couple of years ago I decided to get my FL ported and see what happened...
I had it done at a machine shop so there were no issues and it was done correctly.
The holes are on the bottom of the front and they are pointed slightly to the side.

Attached File  Ported FL 2.jpg (427.76K)
Number of downloads: 5 Attached File  Ported FL 1.jpg (459.54K)
Number of downloads: 6
Attached File  Ported FL 3.jpg (198.99K)
Number of downloads: 4

So far I have noticed it may be somewhat quieter, still have some side by side tests to do.
Recently I acquired another FL and have been thinking about porting it also. The question is, where should I port the new one?
Obviously not the top of the barrel as this would surely cause breakage dew to the ball hitting the edge of the hole.
What do you guys think?
Posted Image

37sps.com
0

#2 User is offline   Lt.Col.Vortex 

  • Death itself
  • PipPipPip
  • Group: Members
  • Posts: 288
  • Joined: 25-November 10
  • Gender:Male
  • Location:South east Georgia

Posted 30 August 2011 - 08:49 PM

I have always wanted to try that. I have a FL and might try that.

I can only thing of one good spot for ports, and thats on the bottom like you have. Either that or the sides.
0

#3 User is offline   Private Silver 

  • Das poomp
  • PipPipPip
  • Group: Members
  • Posts: 412
  • Joined: 22-August 09
  • Gender:Male
  • Location:Pennsylvania
  • Brigade Name:Private Silver

Posted 30 August 2011 - 08:51 PM

Try a triple port, one row on each side and one row on the bottom.
Posted Image
SO Feedback +2/ E-bay feedback +14
0

#4 User is offline   Chill_balla 

  • Forum Member
  • PipPip
  • Group: Members
  • Posts: 102
  • Joined: 09-May 11

Posted 30 August 2011 - 09:26 PM

I believe porting makes whatever length remains on the barrel useless, but I may be wrong
Posted Image

Proud owner of a VSC phantom and an Invert Mini
0

#5 User is offline   Private Silver 

  • Das poomp
  • PipPipPip
  • Group: Members
  • Posts: 412
  • Joined: 22-August 09
  • Gender:Male
  • Location:Pennsylvania
  • Brigade Name:Private Silver

Posted 30 August 2011 - 09:37 PM

Do you mean after the porting? I don't think he plans on putting the porting like 4 inches from the end, so I'm confused as to what you mean.
Posted Image
SO Feedback +2/ E-bay feedback +14
0

#6 User is offline   Chill_balla 

  • Forum Member
  • PipPip
  • Group: Members
  • Posts: 102
  • Joined: 09-May 11

Posted 30 August 2011 - 09:44 PM

Well he said he didn't want to port it at the top of the barrel, which I assumed meant the end...
Posted Image

Proud owner of a VSC phantom and an Invert Mini
0

#7 User is offline   Private Silver 

  • Das poomp
  • PipPipPip
  • Group: Members
  • Posts: 412
  • Joined: 22-August 09
  • Gender:Male
  • Location:Pennsylvania
  • Brigade Name:Private Silver

Posted 30 August 2011 - 09:52 PM

Nah i think he means the actual top "side" of the barrel, since the flatline causes the paintball to rub the top near the end of the barrel.
Posted Image
SO Feedback +2/ E-bay feedback +14
0

#8 User is offline   Chill_balla 

  • Forum Member
  • PipPip
  • Group: Members
  • Posts: 102
  • Joined: 09-May 11

Posted 30 August 2011 - 10:10 PM

Haha well my bad then.
Posted Image

Proud owner of a VSC phantom and an Invert Mini
0

#9 User is offline   Lt.Col.Vortex 

  • Death itself
  • PipPipPip
  • Group: Members
  • Posts: 288
  • Joined: 25-November 10
  • Gender:Male
  • Location:South east Georgia

Posted 31 August 2011 - 11:58 AM

Quote

All porting dose it help equalize out pressure balance in the barrel. Ports on a short barrel are rather useless, but they do actually do a bit, but not so much as to be noticed.

When you port, you do two things. You first silence the shot( I'll explain further on), and second you do affect accuracy( I'll explain that too). And if you notice, ports are on longer than normal length barrels, mostly. Barrels with ports that actually benefit the shot are usually 12+ inch barrels, and hears why.

Ports on a barrel vent pressure behind the ball as it travels out the barrel. And the reason there is pressure behind the barrel, is because in most cases you are either shooting Co2 or some expanding gas of some kind( this also includes HPA, its still gas thats expanding out the barrel). Now, every marker has a sweet spot in barrel length, and this is due to the amount of air released after each trigger pull. If you have a lot of air release and a short barrel, you have a loud shot and poor accuracy. But if you have a short air burst with a long barrel, you will have a crap shot too, but it will be much more quieter.

With ports, people are looking for the proper balance in length( accuracy) and air efficiency( less noise). Now say your marker likes 12" barrels but you want more accuracy. A 14" barrel will work if it has ports, but this is only true if you have tuned your marker right because if your marker can only push a ball 12" before FPS starts to drop, then you should not shoot a 12" barrel to begin with. Basically, ports are to keep FPS/energy out put the same on different size barrels.
__________________




quoted myself from the 98OG.

This post has been edited by Lt.Col.Vortex: 31 August 2011 - 11:58 AM

0

#10 User is offline   Bone37 

  • The Chicago 37th S.P.S. Heavy Gunner
  • PipPipPip
  • Group: Members
  • Posts: 665
  • Joined: 26-August 06
  • Gender:Male
  • Location:Humboldt Park , Chicacgo
  • Brigade Name:Bone37

Posted 31 August 2011 - 09:13 PM

:blink: Sooooooooo... sides, slightly pointing up?
Posted Image

37sps.com
0

#11 User is offline   Lt.Col.Vortex 

  • Death itself
  • PipPipPip
  • Group: Members
  • Posts: 288
  • Joined: 25-November 10
  • Gender:Male
  • Location:South east Georgia

Posted 01 September 2011 - 06:54 PM

Sure. The flatline is so short anyways, that the air cant really expand enough to do much good. SO port away and see what happens.
0

#12 User is offline   Bone37 

  • The Chicago 37th S.P.S. Heavy Gunner
  • PipPipPip
  • Group: Members
  • Posts: 665
  • Joined: 26-August 06
  • Gender:Male
  • Location:Humboldt Park , Chicacgo
  • Brigade Name:Bone37

Posted 06 September 2011 - 09:03 PM

Stopped by the machine shop today...
Attached File  ported FL sides 004.jpg (877.99K)
Number of downloads: 2
I know the holes aren't lined up but I'm not too concerned with that.
Side by side tests coming soon.
Posted Image

37sps.com
0

#13 User is offline   Lt.Col.Vortex 

  • Death itself
  • PipPipPip
  • Group: Members
  • Posts: 288
  • Joined: 25-November 10
  • Gender:Male
  • Location:South east Georgia

Posted 06 September 2011 - 09:10 PM

WHats with the horable insides??

I like the ports so far. What size holoes are they?
0

#14 User is offline   Bone37 

  • The Chicago 37th S.P.S. Heavy Gunner
  • PipPipPip
  • Group: Members
  • Posts: 665
  • Joined: 26-August 06
  • Gender:Male
  • Location:Humboldt Park , Chicacgo
  • Brigade Name:Bone37

Posted 07 September 2011 - 09:19 AM

Yeah the inside leaves a little to be desired, it was the young guy that
worked on it, not the old man. The old guy would have done a better job.
The holes are 1/8" diameter and 1/8" apart.

"I like the ports so far" Do you think I should do more holes?
Posted Image

37sps.com
0

#15 User is offline   Lt.Col.Vortex 

  • Death itself
  • PipPipPip
  • Group: Members
  • Posts: 288
  • Joined: 25-November 10
  • Gender:Male
  • Location:South east Georgia

Posted 07 September 2011 - 08:24 PM

I used 3/16" holes with 1/4" spacing for a pump barrel I did, and it works fine. Hows the 1/8x1/8 doing sound wise??
0

Share this topic:


  • (2 Pages)
  • +
  • 1
  • 2
  • You cannot start a new topic
  • You cannot reply to this topic

1 User(s) are reading this topic
0 members, 1 guests, 0 anonymous users