P90 Problems, UPDATE upgrading???

cjboi · September 1st, 2010, 21:09

Quote:

Originally Posted by Amos

The piston head needs that extra room to re-compress so it doesn't create "Barrel suck" as it's going backwards.

A trick (Credit goes to Ty) is to take the o-ring, stretch it around the cylinder and heat it up with the HEAT (not flame, HEAT) from a candle or a heat-gun.

I never actually tried that. But that sounds like a great Idea. I have extra orings and piston head lying around here somewhere.

VooDooPeteK · September 1st, 2010, 22:06

Quote:

Originally Posted by Najohn

1/4 o-ring, is that a bit small?

its a #14 that you want to pick up

Short Round · September 2nd, 2010, 00:47

Pops just bought a chrono from Velocity arms so I'm hoping it comes by the end of the week and can chrono it.

Will look into a new O-ring once it is chronoed, I'm tired of opening it up haha

VooDooPeteK · September 2nd, 2010, 01:57

Quote:

Originally Posted by Najohn

Will look into a new O-ring once it is chronoed, I'm tired of opening it up haha

yea no sence doing anything else till you get a chance to chrono and test it out.

cjboi · September 2nd, 2010, 02:02

Ya chrono it first man, before opening your gearbox again.

Kos-Mos · September 2nd, 2010, 03:23

All your parts are made for the P90. Basically it takes all V2 parts except for cylinder head, nozzle and tappet plate.

What FPS do you want to hit.

A SP90 will get around 300-310 fps
A SP120 will get you very close to 400, maybe over.

If you want to play inside (350 fps), get a SP100 or SP110. I usually order both and see which one gets me at 345 fps.

Short Round · September 2nd, 2010, 10:03

KS110 spring is what I'm using however its a little bent so I may get a new one once I get back from barrie

VooDooPeteK · September 2nd, 2010, 10:11

The KS come with a 120 spring no?

either way it wasn't shooting what it should have with a 110 or 120, hope you have good results when you get to chrono it

Short Round · September 2nd, 2010, 12:50

Yup I'm hoping to get the chronoy by tomorrow.

KS is a 110 spring I think since it shoots 350 on average atleast it use too

THe_Silencer · September 4th, 2010, 19:42

Ok I'm an idiot, Just went to Home Depot today and the o-ring I'm talking about is actually 3/4 inch, which makes way more sense. As for your spring, I have an E1 p90 and it shot 400 fps immediately after my upgrades. It now shoots 383ish.

Short Round · September 4th, 2010, 20:51

Makes a lot more sense now haha anyways chrono comes tuesday I move to for school tomorrow lol... So I get to test it in 2 weeks or whenever I come home

sounds like a beast now though

Short Round · September 17th, 2010, 02:58

A little update, Chronoed my gun and its shooting 290 fps still. Checked battery level, its now at 8.5Vs fully charged! and its a 9.6Vs J Battery. So I am buying a new 9.6 battery now.

VooDooPeteK · September 17th, 2010, 03:20

Sounds like you still have an air leak or something. The battery should not effect FPS.

double check your hop up rubber and air nozzle as even the smallest tear or crack will mess it up

Styrak · September 17th, 2010, 05:03

Quote:

Originally Posted by Najohn

A little update, Chronoed my gun and its shooting 290 fps still. Checked battery level, its now at 8.5Vs fully charged! and its a 9.6Vs J Battery. So I am buying a new 9.6 battery now.

Battery has no effect on FPS.
But yes it sounds like 2 cells died on your battery or something.

cjboi · September 17th, 2010, 05:54

change your cylinder head and match it with your piston head and cylinder tube. You will get better results. Your nozzle and cylinder head sucks. Styrak is right, putting a 9.6v from 8.4v wont add FPS some does like (3-5 fps depending on motors), but all your gonna get is more rate of fire. You have a 430mm inner barrel and if you do have the stock spring which I'm sure its m110, then that means the nozzle is just pushing the BB in the barrel and not adding air for more FPS. Here, try to copy Illusion on his P90 settings.
http://www.airsoftcanada.com/SpringChart.php

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September 2nd, 2010, 00:47	#78
Short Round Najohn Trader rating Join Date: Aug 2009 Location: SkyDome	Pops just bought a chrono from Velocity arms so I'm hoping it comes by the end of the week and can chrono it. Will look into a new O-ring once it is chronoed, I'm tired of opening it up haha __________________

September 2nd, 2010, 10:11	#83
VooDooPeteK Trader rating Join Date: Feb 2010 Location: Thorold, Ont	The KS come with a 120 spring no? either way it wasn't shooting what it should have with a 110 or 120, hope you have good results when you get to chrono it __________________ http://www.gorillaairsoftradio.com/ Great Airsoft Podcast Gun tech work, Parts, Upgrades and anything else you might need http://www.fortythievesmcnation.com/ Support your local 1%er

September 4th, 2010, 19:42	#85
THe_Silencer Trader rating Join Date: Jul 2009 Location: Hamilton,ON	Ok I'm an idiot, Just went to Home Depot today and the o-ring I'm talking about is actually 3/4 inch, which makes way more sense. As for your spring, I have an E1 p90 and it shot 400 fps immediately after my upgrades. It now shoots 383ish. __________________ It is the mark of an educated mind to be able to entertain a thought without accepting it - Aristotle -Founder of Steel City Hamilton Infantry and Tactics -Certified level 43 Autosniper by Commander Amos

September 2nd, 2010, 02:02	#80
cjboi Trader rating Join Date: Oct 2009 Location: manitoba	Ya chrono it first man, before opening your gearbox again.

September 2nd, 2010, 10:03	#82
Short Round Najohn Trader rating Join Date: Aug 2009 Location: SkyDome	KS110 spring is what I'm using however its a little bent so I may get a new one once I get back from barrie

September 2nd, 2010, 12:50	#84
Short Round Najohn Trader rating Join Date: Aug 2009 Location: SkyDome	Yup I'm hoping to get the chronoy by tomorrow. KS is a 110 spring I think since it shoots 350 on average atleast it use too

September 4th, 2010, 20:51	#86
Short Round Najohn Trader rating Join Date: Aug 2009 Location: SkyDome	Makes a lot more sense now haha anyways chrono comes tuesday I move to for school tomorrow lol... So I get to test it in 2 weeks or whenever I come home sounds like a beast now though

September 17th, 2010, 02:58	#87
Short Round Najohn Trader rating Join Date: Aug 2009 Location: SkyDome	A little update, Chronoed my gun and its shooting 290 fps still. Checked battery level, its now at 8.5Vs fully charged! and its a 9.6Vs J Battery. So I am buying a new 9.6 battery now. __________________

September 17th, 2010, 03:20	#88
VooDooPeteK Trader rating Join Date: Feb 2010 Location: Thorold, Ont	Sounds like you still have an air leak or something. The battery should not effect FPS. double check your hop up rubber and air nozzle as even the smallest tear or crack will mess it up __________________ http://www.gorillaairsoftradio.com/ Great Airsoft Podcast Gun tech work, Parts, Upgrades and anything else you might need http://www.fortythievesmcnation.com/ Support your local 1%er

September 17th, 2010, 05:54	#90
cjboi Trader rating Join Date: Oct 2009 Location: manitoba	change your cylinder head and match it with your piston head and cylinder tube. You will get better results. Your nozzle and cylinder head sucks. Styrak is right, putting a 9.6v from 8.4v wont add FPS some does like (3-5 fps depending on motors), but all your gonna get is more rate of fire. You have a 430mm inner barrel and if you do have the stock spring which I'm sure its m110, then that means the nozzle is just pushing the BB in the barrel and not adding air for more FPS. Here, try to copy Illusion on his P90 settings. http://www.airsoftcanada.com/SpringChart.php

P90 Problems, UPDATE upgrading???

Doctor's Corner