What do QEV’s do?

[Masonhd81]

Hello MCB goers, I’m have no idea what qev’s do but I was recommended to put some on my trilly. Anyone have input on what they are and how they could contribute to my cocker. Thanks!

[Chuck E Ducky]

It's basically a small check valve that lets off pressure on the back side or front side depending on forward or back of the rams stroke to lower force needed and increase speed at the cost of reliability.

[Jordan]

Who told you that?

[Chuck E Ducky]

Agreed don’t mess with the reliability of the Trilly it’s there best feature.

[tyronejk]

This page: http://www.zdspb.com/tech/mguide/ion...dy_design.html has some info about QEVs used in Ions. The functionality in Autocockers is pretty similar.

[martix_agent]

Who told you that?

the classic autocker haiku:

Did it work before?
You screwed with it, didn't you?
Got what you deserve.

[Sdawg]

The idea is your autococker will shoot faster because the ram will move faster, making the bolt move forward and back faster, as well as resetting the hammer faster.

These things are unnecessary for a mechanical autococker.

[Hp_lovecraft]

I don’t see a negative to using them. It slightly speeds up the cycle time by removing a small amount of resistance. Maybe the trilogy would be a little less likely to short stroke?

they are all made by clippard and pneumadyne then rebadged by paintball companies

[tyronejk]

One potential negative is a faster bolt forward stroke may be harder on paint.

[latches109]

I’ve never seen that as a problem. I’ve shot the very brittle paint through and eblade ramping 15pbs with zero breakage. Poor timing will smash your paint, qev will help prevent the back pressure messing with your timing. Set your LPR correctly.