To port or not to port ...

[Billy No Mates]

its a new american barrel system. The Equation Pro.
(have a look <a href="www.equationusa.com"> here </a> for a better idea)
13 / 15 inch (havent decided yet) with pro adapter, dragon mid section, and silencer tip(just cos i like the look of it).
All in red, with all 6 barrel inserts.
and its going on the cocker listed in my sig.

and dont tell me just to buy a freak. cos i dont like the look of them. and want something slightly differant

 

[Collier]

Originally posted by John[SAD]
The ball only accelerates in the back section on the barrel, which is always left unported anyway.
So its noise versus...........

If thats the case then why with a javelin barrel which only has a single row of porting in the middle of the barrel if you cover the porting does the velocity rise?

Paul.

 

[Collier]

Attached is a pic of the barrel in question you can just see 1 of the porting holes,

Paul.

 

[Tony]

Originally posted by Billy No Mates
and dont tell me just to buy a freak. cos i dont like the look of them. and want something slightly differant

As if!! You seen the number of people selling Freaks recently?? I should know, I was one of them......

 

[Tony]

Originally posted by Paul_collier


If thats the case then why with a javelin barrel which only has a single row of porting in the middle of the barrel if you cover the porting does the velocity rise?

Paul.

Maybe. There's a big trend in the US with the Pro teams who use Matrix's to cover the back porting with tape, to decrease gas useage. Less gas used to fire the ball equals more shots per fill. Less porting means less gas useage, but more noise as the ball and gas leave the barrel at the same time, creating a louder pop.

 

[jeevusmaximus]

billy

How bigs your bottle again? I would definately go for effiecency over noise. You can make your cocker quieter with a new valve and stuff if you really have to.

 

[tb-303]

Originally posted by Paul_collier


Allow me....

If you use a less ported barrel you can turn you're velocity adjustment down a bit and get the same FPS, this is because less air is dispursed through the porting.
Think of it as a hose if you had a hose with holes in it you have to have a higher force of water coming through to get the same amount of water as a hose with no holes. DOes that make sence?

Paul.

yes it does. i wasn't thinking it all the way through.

Originally posted by John[SAD]
The ball only accelerates in the back section on the barrel, which is always left unported anyway.
So its noise versus...........

i was wondering that too!

tb-303

 

[Collier]

Originally posted by tb-303


i was wondering that too!

tb-303

He's right but its a mute point in this case!

Paul.

 

[Mark]

Ok not getting into the arguement cos it will get all physical as in physic's but here something to see to show what has been described

 

[Billy No Mates]

thats one hell of a picture.

So its gas efficiency versus Noise.

I think ill stick to efficiency.
Thanks for the help guys