low fps

jesster202 · February 6th, 2008, 23:38

ok so i got my gun shooting its a v2 mechbox a jg mech box that i just orderd and now i cant even perice a box what could be the problem.

Amos · February 6th, 2008, 23:42

Check for compression,

Check for the mechbox seating up against the hopup properly..

And other air leaks.

jesster202 · February 6th, 2008, 23:50

how do i check for compression and air leeks.

Syn · February 6th, 2008, 23:57

http://forums.airsoftmechanics.com/i...hp?topic=908.0

read where it says,
"Questions / Symptoms:
- How to check compression? Is mine ok?
- I've poor / inconsistent FPS results"

caboose36 · February 7th, 2008, 00:03

Well, First you must take apart your Mechbox, but leave your cylender set in it. The, what you do is you take one of your fingers and put it over your air nosel. When you do that, you want to pull your piston backwards (but not all the way out) and push it in at a medium speed and force.

If your pistion goes in fast and easy, you have a low compression, and if it goes in slow and hard, you have a good compression. If Im leaving anything out, please let me know.

Cab

caboose36 · February 7th, 2008, 00:04

uhhh! Syn you beat me!

Syn · February 7th, 2008, 00:12

Quote:

Originally Posted by caboose36

uhhh! Syn you beat me!

sorry man.

also jesster202, this might apply to you:
If the o ring seem too small to create compression even after you lightly lubed the inner cylinder wall, I stretched my new oring by using my fingers and using it like an elastic band. Enough to stretch it a bit but not overstretch or damage it. Then I had great compression.

jesster202 · February 7th, 2008, 00:13

could it be also that the motor isnt in properly?

The Saint · February 7th, 2008, 00:15

Motor and battery never affect FPS.

jesster202 · February 7th, 2008, 00:19

dam it its brand new and the thing cant even perice a box.

TokyoSeven · February 7th, 2008, 00:20

Unfortunetly if your lacking in the know how to resolve the issue, your only other issue would be to find a gun doc. It is somewhat difficult to know if something is broken when its possible that you dont know how it is spose to look like in the first place. I mean no offence by this, but its better to have someone else who knows check it out rather than bugger something else up.

If your daring, I would recommend mechbox.com as well as the other links and methods that have been suggested.

Best wishes.

mcguyver · February 7th, 2008, 00:21

Quote:

Originally Posted by jesster202

dam it its brand new and the thing cant even perice a box.

What kind of box? My stock Marui guns when shooting 240-300 (depending on gun and BB weight) would pierce thin cardboard, but not the double-layered or heavy stuff. Some cardboard only the M150 in my PTW will pierce, not the M130 or lower.

jesster202 · February 7th, 2008, 00:22

naw im not daring im actualy pissed hey tokyo how much fps do you get on your new hk jg i got that exzact same mechbox.

jesster202 · February 7th, 2008, 00:23

my last jg mechbox it was ths sliver one it was shooting around 400 fps this one isnt shoot near as hard. it dosnt perice a can as said my last one did.

TokyoSeven · February 7th, 2008, 00:30

The stock mechbox for me was somewhere in the 385-395 area.

Currently I have a stock TM spring install so its FPS will be much lower.
However the ROF is through the cieling.

Why dont you try and do the pop can test with your gun. Tell us what happens.

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February 6th, 2008, 23:38	#1
jesster202 Trader rating Join Date: Dec 2007 Location: London Ontario	low fps ok so i got my gun shooting its a v2 mechbox a jg mech box that i just orderd and now i cant even perice a box what could be the problem. __________________ *MY COLLECTION* *AEG* M4 coustom full metal with king arms metal body //\\ Galaxy MP5 PDW *GAS/SPRING* KJW M9 FULLY UPGRADED //\\KWA FULL SIZE USP //\\ TF MAC11 *GEAR* Coyote Brown CIRAS

February 6th, 2008, 23:42	#2
Amos Trader rating Join Date: Aug 2006 Location: Japan	Check for compression, Check for the mechbox seating up against the hopup properly.. And other air leaks. __________________ Custom Builds: FA3674U Krinkov G3SD6

February 6th, 2008, 23:50	#3
jesster202 Trader rating Join Date: Dec 2007 Location: London Ontario	how do i check for compression and air leeks. __________________ *MY COLLECTION* *AEG* M4 coustom full metal with king arms metal body //\\ Galaxy MP5 PDW *GAS/SPRING* KJW M9 FULLY UPGRADED //\\KWA FULL SIZE USP //\\ TF MAC11 *GEAR* Coyote Brown CIRAS

February 6th, 2008, 23:57	#4
Syn Trader rating Join Date: Aug 2005 Location: Toronto	http://forums.airsoftmechanics.com/i...hp?topic=908.0 read where it says, "Questions / Symptoms: - How to check compression? Is mine ok? - I've poor / inconsistent FPS results" __________________

February 7th, 2008, 00:03	#5
caboose36 Trader rating Join Date: Nov 2007 Location: Winnipeg, Manitoba	Well, First you must take apart your Mechbox, but leave your cylender set in it. The, what you do is you take one of your fingers and put it over your air nosel. When you do that, you want to pull your piston backwards (but not all the way out) and push it in at a medium speed and force. If your pistion goes in fast and easy, you have a low compression, and if it goes in slow and hard, you have a good compression. If Im leaving anything out, please let me know. Cab

February 7th, 2008, 00:04	#6
caboose36 Trader rating Join Date: Nov 2007 Location: Winnipeg, Manitoba	uhhh! Syn you beat me!

February 7th, 2008, 00:13	#8
jesster202 Trader rating Join Date: Dec 2007 Location: London Ontario	could it be also that the motor isnt in properly? __________________ *MY COLLECTION* *AEG* M4 coustom full metal with king arms metal body //\\ Galaxy MP5 PDW *GAS/SPRING* KJW M9 FULLY UPGRADED //\\KWA FULL SIZE USP //\\ TF MAC11 *GEAR* Coyote Brown CIRAS

February 7th, 2008, 00:15	#9
The Saint Trader rating Join Date: Jan 2005 Location: Quebec	Motor and battery never affect FPS. __________________ "The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."

February 7th, 2008, 00:19	#10
jesster202 Trader rating Join Date: Dec 2007 Location: London Ontario	dam it its brand new and the thing cant even perice a box. __________________ *MY COLLECTION* *AEG* M4 coustom full metal with king arms metal body //\\ Galaxy MP5 PDW *GAS/SPRING* KJW M9 FULLY UPGRADED //\\KWA FULL SIZE USP //\\ TF MAC11 *GEAR* Coyote Brown CIRAS

February 7th, 2008, 00:20	#11
TokyoSeven Red Wine & Adderall Trader rating Join Date: Oct 2005 Location: Saskatoon, SK	Unfortunetly if your lacking in the know how to resolve the issue, your only other issue would be to find a gun doc. It is somewhat difficult to know if something is broken when its possible that you dont know how it is spose to look like in the first place. I mean no offence by this, but its better to have someone else who knows check it out rather than bugger something else up. If your daring, I would recommend mechbox.com as well as the other links and methods that have been suggested. Best wishes. __________________ "Its only a little bit on fire"

February 7th, 2008, 00:22	#13
jesster202 Trader rating Join Date: Dec 2007 Location: London Ontario	naw im not daring im actualy pissed hey tokyo how much fps do you get on your new hk jg i got that exzact same mechbox. __________________ *MY COLLECTION* *AEG* M4 coustom full metal with king arms metal body //\\ Galaxy MP5 PDW *GAS/SPRING* KJW M9 FULLY UPGRADED //\\KWA FULL SIZE USP //\\ TF MAC11 *GEAR* Coyote Brown CIRAS

February 7th, 2008, 00:23	#14
jesster202 Trader rating Join Date: Dec 2007 Location: London Ontario	my last jg mechbox it was ths sliver one it was shooting around 400 fps this one isnt shoot near as hard. it dosnt perice a can as said my last one did. __________________ *MY COLLECTION* *AEG* M4 coustom full metal with king arms metal body //\\ Galaxy MP5 PDW *GAS/SPRING* KJW M9 FULLY UPGRADED //\\KWA FULL SIZE USP //\\ TF MAC11 *GEAR* Coyote Brown CIRAS

February 7th, 2008, 00:30	#15
TokyoSeven Red Wine & Adderall Trader rating Join Date: Oct 2005 Location: Saskatoon, SK	The stock mechbox for me was somewhere in the 385-395 area. Currently I have a stock TM spring install so its FPS will be much lower. However the ROF is through the cieling. Why dont you try and do the pop can test with your gun. Tell us what happens. __________________ "Its only a little bit on fire"

low fps

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