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-   -   Detents in a pump? (http://www.mcarterbrown.com/forums/new-sport/212584-detents-pump.html)

Karnokr 09-03-2012 08:02 AM

Detents in a pump?
 
I am new to pump, having just picked up an Empire Sniper (been using electros for years). My question is this- If the bolt pushes the ball past the detents when you pump it forward and ready to fire, what is the purpose of the detents in this particular marker? To prevent double feeds? Aren't there some pumps that don't use detents? Could you theoretically remove the detents and underbore to prevent roll-outs? Does gravity feed and electronic hoppers come in to play? Set this pump newb straight, haha!

Falcon16 09-03-2012 08:13 AM

detents on any pump are just there to stop double feeds nothing more. to stop rollouts you need to underbore. If you removed your detents you'll most likely double or triple feed almost every shot

Karnokr 09-03-2012 01:10 PM

Quote:

Originally Posted by Falcon16 (Post 2463356)
detents on any pump are just there to stop double feeds nothing more. to stop rollouts you need to underbore. If you removed your detents you'll most likely double or triple feed almost every shot

Simple enough, thanks!

AGDRetro 09-03-2012 09:58 PM

There are however some pumps with detents that function as detents. The Phantom has a slightly extended breech which some outfits like ASP have put detents into with a little milling. The ASP Roundhead body has both the detent mod and uses Cocker threaded barrels, greatly increasing your options for barrels to underbore with (something I still do on a pump even with detents).

ASP Detent Mod

LibertyRadeon 09-03-2012 10:22 PM

Some pumps do have a detent system that functions to prevent rollouts, such as the Grey Ghost.

Off Duty Ninja 09-05-2012 07:58 PM

Like said before you can underbore the barrel to prevent rollouts(I run a 682 insert and it works for most paint) and you said you have a empire sniper so the 680 back should be fine. another trick for rollouts (if you have a loose bore barrel) is you get a small strip of electrical tape and put it on the inside of the barrel.

as for elctric vs gravity hoppers the only thing that is really different is with electric it makes sure there is a ball in the breech everytime you shoot and gravity yo might have to shake it every so often, I run a sport shot and it rarely jams and when i does just shake it

The Inflicted 09-05-2012 10:57 PM

Quote:

Originally Posted by LibertyRadeon (Post 2463984)
Some pumps do have a detent system that functions to prevent rollouts, such as the Grey Ghost.

This is possible because a some Nelson-based pumps (Like the Ghost, Phantom, SL-68 II*) use an original Nelspot-style breech-drop style bolt, as opposed to the later bore-drop configuration used today by the Empire Trracer.

Apart from the detent issue, there are various advantages of each bolt shape such that debating which was better was one of the first mag/cocker-style debates in paintball lore.


http://img704.imageshack.us/img704/8329/nels07.jpg

*While the SL-68 II is breech-drop you can't fit it with non-barrel detents for various design reasons.

El Super Beasto 10-11-2012 12:19 AM

Quote:

Originally Posted by Falcon16 (Post 2463356)
detents on any pump are just there to stop double feeds nothing more. to stop rollouts you need to underbore. If you removed your detents you'll most likely double or triple feed almost every shot

I've got a 94 sniper that disagrees with that statment ;)

chrislognshot 10-11-2012 01:15 AM

Quote:

Originally Posted by El Super Beasto (Post 2500971)
I've got a 94 sniper that disagrees with that statment ;)

and that will lead to whole new argument over that too.

thumper 10-11-2012 07:02 AM

Quote:

Originally Posted by El Super Beasto (Post 2500971)
I've got a 94 sniper that disagrees with that statment ;)

agreed.. I played a 94 (pre-detent) for years. Never had a problem except for roll outs and 1" of surgical tape fixed that. er.. don't drink the Kool Aid


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