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Old 01-04-2008, 10:35 PM   #1 (permalink)
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Are Qevs really needed...

Are qevs really needed for a mech cocker. I can understand electro cockers but can a person really shoot a mech fast enough to make a difference?
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Last edited by spanky1205; 01-04-2008 at 11:20 PM. Reason: I really need to proof read what I type.
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Old 01-04-2008, 11:13 PM   #2 (permalink)
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Actually they are more helpful in a mechanical set up than they are in a e gun . The remove the air spring in the ram so it acts faster. 2-4bps on a mec gun can be gained with a pair 1bps can be had on an e-gun
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Old 01-04-2008, 11:41 PM   #3 (permalink)
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I've wondered this too. Interesting. I know the 1 on my Stroker really helps. I might throw a couple on one of my cockers and see if it makes a difference.

Thanks for the helpful answer, B.
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Old 01-05-2008, 12:12 AM   #4 (permalink)
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Are they really "needed", no. Cockers have been operating fine without them for many years. Do they help ? Sure, they certainly make the operation quicker and snappier.
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Old 01-05-2008, 12:19 AM   #5 (permalink)
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Also, the one nearest the block helps the ram travel backwards faster, helping to reduce shortstroking. And, by removing the resistance on the other side, you can drop your pressure a bit, and thereby get a slight increase in efficiency. Emphasis on slight. I just like the feel, personally... the thing MOVES with QEVs, especially with my quarter-inch bore ram.
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Old 01-05-2008, 01:49 AM   #6 (permalink)
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2 on a typhoon are great it will take the gun to 14-15 bps if you can pull the trigger that fast , that all said it must be timed very aggressively and the trigger tuned to be snappy it is painstaking work

1 on a stoker is just fine

2 on a mechanical cocker are just great a bit of retiring needs to be done and you may be able to tune the trigger for a lighter feel with a roller sear, and even lower the rock a bit too
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Old 01-05-2008, 03:27 PM   #7 (permalink)
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This came up over on Custom Cockers. For mechanicals there's two alternatives. Use them to slightly increase the response speed and reduce the risk of a short stroke or use the increased response speed to turn the LPR down so it cycles at the previous speed with less pressure. Done well and with some tuning it is apparently possible to reduce the ram pressure to where it will only pinch a ball instead of chopping it. Ball shells will ovbiously matter in this with some brands being less delicate than others. The bonus to this is that because of the lower LPR pressure the operation becomes even more smooth and slick if you run for similar speed but reduced force.

It's certainly not the shooting speed. I doubt I can trigger a mechanical at more than 8 and even then it would have to be a 4 cup breakfast to let me do even that. 5 or 6 bps on a good day and 4 to 5 in game where I'm more worried about short stroking and chopping.
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Old 01-05-2008, 03:40 PM   #8 (permalink)
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On a stroker which end is a qev best at?
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Old 01-05-2008, 04:26 PM   #9 (permalink)
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Quote:
Originally Posted by Chemical-X View Post
On a stroker which end is a qev best at?
The far end toward the barrel, it relives the air spring effect be sure to readjust the rock after install.



I had two in my phoon and easily out ran a reloaded revy with an evil impeller (14-15 bps)
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Old 01-06-2008, 03:43 AM   #10 (permalink)
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What's a "stroker"?
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