Airsoft Canada
http://triggerairsoft.com/shop/

Go Back   Airsoft Canada > Discussion > Doctor's Corner
Home Forums Register Gallery FAQ Calendar
Retailers Community News/Info International Retailers IRC Today's Posts

Broken piston head, bad?

:

Doctor's Corner

Reply
 
Thread Tools
Old January 28th, 2010, 17:28   #1
Sacre
 
Join Date: Nov 2009
Location: Woodstock, ontario
Question Broken piston head, bad?

So, my gun randomly stopped firing at the good ole 360FPS, and went down to 2fps. So, i took her apart and found that the oring was snapped. I replaced it with a new one but my fps was only around... 10.. lol, so i reopened it up and the oring was rolled and mishapen (typo?).

So, i took a second look at this piston head and found something weird, the placement for the Oring allowed the oring to move freely backwards, and placed the oring against sharp edges,

check out the pics.

Shot with CG10 at 2010-01-28

Shot with CG10 at 2010-01-28

Shot with CG10 at 2010-01-28

Tell me, does this look right to you? (ignore the hair). So i replaced the piston head with a new one, and shes firing nice and strong again.

But wow, what a terrible design imo, its like its made to break quicker then a standard piston head.

~Sacre~
Sacre is offline   Reply With Quote
Old January 28th, 2010, 17:32   #2
ILLusion
GBB Whisperer
 
ILLusion's Avatar
 
Join Date: Jun 2002
Location: Toronto
What brand piston head is this? Everything about that photo looks wrong.

It looks like the face of the piston head attached itself directly to the cylinder head and sheared clean off the piston head base.

The o-ring is not placed in the correct position you have it in that photo... it should actually be sitting on TOP of all that...... "junk" in the middle.

I don't think I've seen such a messed up piston head in my entire airsoft career.
ILLusion is offline   Reply With Quote
Old January 28th, 2010, 17:35   #3
Sacre
 
Join Date: Nov 2009
Location: Woodstock, ontario
Quote:
Originally Posted by ILLusion View Post
What gun is this? Everything about that photo looks wrong.

It looks like the face of the piston head has sheared clean off, and left a stump in the middle...
lol i know eh, looks terrible. Like its missing the other half of the piston head.

the G&G GR16 R4 Commando rifle.

She was firing like a dream for the first month, then poof, this happens. I replaced it, but man thats one hell of a piston head.
Sacre is offline   Reply With Quote
Old January 28th, 2010, 18:24   #4
Amos
 
Amos's Avatar
 
Join Date: Aug 2006
Location: Tokushima, Japan
It looks like it's either a MAJOR casting failure... or the piston face has gone and fucked off somewhere and someone tried to put the O-ring on in a different place..
__________________
Custom Builds:
FA3674U
Krinkov
G3SD6
Amos is offline   Reply With Quote
Old January 28th, 2010, 18:37   #5
PaCHeKo!
 
PaCHeKo!'s Avatar
 
Join Date: Jan 2008
Location: St-Jérôme, Québec
Send a message via MSN to PaCHeKo!
LoL! That's not pretty. I'm sure you did shot few piston head plastic chips instead of BBs.
__________________


P.M.C. - Prostituée Militaire de Campagne.
PaCHeKo! is offline   Reply With Quote
Old January 28th, 2010, 19:27   #6
Skruface
 
Skruface's Avatar
 
Join Date: Jan 2002
Not repairable. Bin it and buy a Modify or ARS piston head to replace it.
__________________
Quote:
Originally Posted by TokyoSeven View Post
That was a very bad move on your behalf. Sort of like cutting off your foot for money, but not getting the money first and then letting the person with the money run away.
Quote:
Originally Posted by MadMorbius View Post
Liberals rely on emotion. Conservatives rely on evidence, and the Socialists rely on everyone else.
Skruface is offline   Reply With Quote
Old January 28th, 2010, 20:16   #7
Sacre
 
Join Date: Nov 2009
Location: Woodstock, ontario
Quote:
Originally Posted by Skruface View Post
Not repairable. Bin it and buy a Modify or ARS piston head to replace it.
Oh yea shes been replaced, now i'm getting my nice 360fps again lol.

Seems like the design was similar to http://www.airsoftcore.com/images/re...gg/cmm4_11.jpg

and the piston head was shattered, probably due to the cold weather? no?

Ah well, when i took her apart i was shocked at how bad that piston head was, and figured something was wrong lol. Hence the post here.
Sacre is offline   Reply With Quote
Old January 28th, 2010, 20:46   #8
Skruface
 
Skruface's Avatar
 
Join Date: Jan 2002
It almost looks like the stuff on the front of the piston head was supposed to be some kind of a shock absorber, like the pitson face on a silent head set. Was it soft and compressable? Also, it looks like the back half of the piston head (it looks like a 2-piece design) is completely missing....
__________________
Quote:
Originally Posted by TokyoSeven View Post
That was a very bad move on your behalf. Sort of like cutting off your foot for money, but not getting the money first and then letting the person with the money run away.
Quote:
Originally Posted by MadMorbius View Post
Liberals rely on emotion. Conservatives rely on evidence, and the Socialists rely on everyone else.
Skruface is offline   Reply With Quote
Old January 28th, 2010, 23:12   #9
Amos
 
Amos's Avatar
 
Join Date: Aug 2006
Location: Tokushima, Japan
Nah that was a broken G&G piston head for sure.

The inside has that neat design lol
__________________
Custom Builds:
FA3674U
Krinkov
G3SD6
Amos is offline   Reply With Quote
Old January 28th, 2010, 23:17   #10
StrikeFreedom
 
StrikeFreedom's Avatar
 
Join Date: Aug 2006
Location: Markham
Seems like half of the piston head got twisted off.
StrikeFreedom is offline   Reply With Quote
Old January 28th, 2010, 23:20   #11
Drake
E-01
 
Drake's Avatar
 
Join Date: Dec 2001
Location: Montreal, QC
I agree with Illusion's assessment: it looks like the face of the piston head sheared off and embedded itself in the cylinder head. And it looks like the cylinder head doesn't have "impact pad" (the bit that gets replaced by sorbo pads).

That's pretty eww btw, I've seen nicer internals in ACM guns.
__________________
Drake is offline   Reply With Quote
Old January 29th, 2010, 15:23   #12
Azathoth
 
Azathoth's Avatar
 
Join Date: Feb 2008
Location: Red Deer
That must be from a G&G Combat machine. CHuck and buy something to replace it with. While you're at it. i recommend a new cylinder head.
__________________
Do you know what ruins airsoft?
(Chair), (Drama), (Air), (Sugar) softers, filthy casuals
---
Quote:
Originally Posted by mcguyver View Post
it would appear I am not first up in this gang-bang
---
WANTED PTW Receiver PRIME, STG, Factory
Azathoth is offline   Reply With Quote
ReplyTop


Go Back   Airsoft Canada > Discussion > Doctor's Corner

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Airsoft Canada
http://triggerairsoft.com/shop/

All times are GMT -4. The time now is 11:51.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.