No bolt tip oring?

Archanglmikel · 10-16-2012, 10:29 AM

Ok so I'm a bit of a Tib noob here, but why no oring on the tip of the 8.1 bolt? Wouldn't that seal the barrel at the firing point better than metal on metal? I was cleaning one I just picked up and noticed when I seat the bolt in the barrel I can see light around it. Thats got to kill the efficiency. Any ideas?

casper · 10-17-2012, 01:45 PM

Interesting never put much thought to that.

Jackson · 10-17-2012, 05:23 PM

Would it seal better? Of course.

However, the o-ring would add drag to the bolt, countering the efficiency gains.

Also, there isn't enough material in the bolt in that area to add an o-ring groove. It would require a new bolt design. You would have to decrease the flow path of the gas to gain enough space for an o-ring. That would also lower efficiency.

Additionally, the gas when leaving the bolt is being directed forwards. It has to turn 180° to escape between the bolt and barrel. So not much is escaping via this path.

Plenty of other markers lack an o-ring on the bolt tip. It isn't a critical component.

dirtraven1 · 10-23-2012, 11:18 AM

like on a DM, the bolt o-ring is more to squeegie the eye pipe more than a function of sealing the air since the air/co2 is forced forward so very little is lost.

10-16-2012, 10:29 AM	#1 (permalink)
Archanglmikel Active Member Join Date: Oct 2010	No bolt tip oring? Ok so I'm a bit of a Tib noob here, but why no oring on the tip of the 8.1 bolt? Wouldn't that seal the barrel at the firing point better than metal on metal? I was cleaning one I just picked up and noticed when I seat the bolt in the barrel I can see light around it. Thats got to kill the efficiency. Any ideas? __________________

10-17-2012, 01:45 PM	#2 (permalink)
casper MCB Member Join Date: Apr 2007 Location: Waterford,Nor Cal	Interesting never put much thought to that. __________________ My feedback http://www.mcarterbrown.com/forums/f...-feedback.html Check out the new West Coast Adventure Park the old Infinite edge!!! http://www.youtube.com/watch?v=thy8_jG-f1s socaleuro's old school jersey review http://www.mcarterbrown.com/forums/m...socaleuro.html

10-17-2012, 05:23 PM	#3 (permalink)
Jackson MCB Member Join Date: Jul 2006 Location: Pittsburgh, PA	Would it seal better? Of course. However, the o-ring would add drag to the bolt, countering the efficiency gains. Also, there isn't enough material in the bolt in that area to add an o-ring groove. It would require a new bolt design. You would have to decrease the flow path of the gas to gain enough space for an o-ring. That would also lower efficiency. Additionally, the gas when leaving the bolt is being directed forwards. It has to turn 180° to escape between the bolt and barrel. So not much is escaping via this path. Plenty of other markers lack an o-ring on the bolt tip. It isn't a critical component. __________________ My feedback

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

10-23-2012, 11:18 AM	#4 (permalink)
dirtraven1 Newbie Join Date: Jan 2012 Location: NYC	like on a DM, the bolt o-ring is more to squeegie the eye pipe more than a function of sealing the air since the air/co2 is forced forward so very little is lost.