Airsoft Canada
MILSIG

Go Back   Airsoft Canada > Information Center > Newbie Tank
Home Forums Register Gallery FAQ Calendar
Retailers Community News/Info International Retailers IRC Today's Posts

Piston "O" ring?

:

Newbie Tank

Reply
 
Thread Tools Search this Thread
Old June 18th, 2009, 17:48   #1
ginnz
 
ginnz's Avatar
 
Join Date: Apr 2009
Location: Small Town! Manitoba
Piston "O" ring?

hey guys,

i have a simple question, seein' how ive never taken apart an airsoft gun 'cept mine, i dont know this.....

how tight should the "O" ring on the piston be? i mean, should it be able to flop around on the piston a bit? the last time i tore my M4 down, it was like the "O" ring is kinda oversized, like a couple millimeters of slack, kinda looks expanded, kinda like when O rings get oiled with the wrong kind of oil, they'll expand.

im wondering if this normal? the piston is ported, so it looks like when its flying forward, the ports allow the ring to expand in the cylinder for a better seal.

thanks for any input....

ginnz.
ginnz is offline   Reply With Quote
Old June 18th, 2009, 20:20   #2
Darklen
Administrator
 
Darklen's Avatar
 
Join Date: Jan 2004
Location: Red Deer, AB
Send a message via MSN to Darklen
Make sure the cylinder head is installed in the cylinder, put the complete piston assembly inside, including oring, put your thumb over the nozzle (the brass tube sticking out) and try to compress the piston. If the piston stops 1/4-1/3 of the way in, it's sealing properly.

Orings on the piston head seem oversized but they are meant to expand slightly during the compression stage to seal better.
__________________
ASC & RAAT Age Verifier for Red Deer & Area Alberta
Darklen is offline   Reply With Quote
Old June 18th, 2009, 22:29   #3
ginnz
 
ginnz's Avatar
 
Join Date: Apr 2009
Location: Small Town! Manitoba
thanks, ill try that test next time i pull it apart. i was wondering how to check the seal.....thanks!
ginnz is offline   Reply With Quote
ReplyTop


Go Back   Airsoft Canada > Information Center > Newbie Tank

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
MILSIG

All times are GMT -4. The time now is 11:23.


Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2017, vBulletin Solutions, Inc.