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Old 10-27-2008, 06:53 PM #1
xluben
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Ego7 No QEV "Mod"

Most people are trying to add another QEV to their guns, but I've decided to
go the opposite direction. I replaced the QEV on the rear of the Ego7 ram with a
banjo that is identical to the one on the front of the ram. Here is a picture
showing that the banjo bolt actually has a slightly larger diameter through
the screw than the QEV:



Of course, even with this slightly larger diameter screw the air still has to
travel through a much greater distance before venting (all the way through
the LP hose to the noid instead of directly out the QEV). This will
minimally decrease the max cycle rate. But the good news is that the
Ego7 can cycle soooo fast in the stock setup, that the change is
unnoticeable. It will still cycle faster than any loader will feed.

With is all hosed up and ready to go it looks like you would expect:





With this longer air travel distance and slightly slower venting this provides a
similar "air cushion" effect as the zick kit. This will result in a minimally
"smoother" shot than stock. With the zick kit this would be accentuated
even more.

In real life use the change is all all but un-noticeable. I doubt anyone would
be able to pick out the gun with this mod over any other stock Ego7 just by
shooting it. The main benefit, and the reason I chose to do this, is because
it adds another level of reliability. The one part (if any) that seems to fail on
Ego7's seems to be the QEV diaphragm. With the banjo in place it
completely avoids the possibility of that failure mode.

Time to Install: 10 min or less
Cost of Parts: Minimal
Decrease in ROF: None in "Real-World" Use
Change in Shooting: Un-noticeable
Never Having a QEV Diaphragm Fail: Priceless

Just a thought for anyone who would rather have a gun that never breaks
instead of one that can cycle 50 times per second.

Quote:
Originally Posted by Jack Wood View Post
No real issue with doing this. The 07/08 is still considerably faster acting than an Etek or Timmy solenoid, so no it doesn't make it feel like an Etek.

As the QEV is only on the rear stroke of the 07, then all that the QEV does is help increase rearward speed of the rammer, and does not influence the forward (critical speed) of the rammer.

I think Xluben has hit all the advantages and disadvantages on the head as far as this mod is concerned.

Nice write-up

Jack

Last edited by xluben : 10-30-2008 at 05:51 PM.
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Old 10-27-2008, 07:01 PM #2
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Interesting. Id like to hear jack/nicky/coyuts thoughts on this.
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Old 10-27-2008, 07:30 PM #3
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agreed.

well done man!!
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Old 10-27-2008, 07:57 PM #4
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wow. a home made way around the zick kit.

i too want to hear just a pe tech's thoughts.
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Old 10-27-2008, 08:12 PM #5
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Techs will probably say no go.


Don't forget the ever so christened weight reduction of .0001 lbs

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Old 10-27-2008, 08:14 PM #6
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but since it is bigger does the grip frame fit smooth? i own an 08 not an 07 so i wouldnt know....
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Old 10-27-2008, 08:23 PM #7
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I personally like the new diaphrams too much to do this ,but its a nice little trick.
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Old 10-27-2008, 08:45 PM #8
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nice mod!
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Old 10-27-2008, 11:23 PM #9
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the only thing about this mod is i hate those type of barbs...but all in all gj
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Old 10-27-2008, 11:27 PM #10
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ben and your shenanigans
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Old 10-27-2008, 11:55 PM #11
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very interesting
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Old 10-28-2008, 12:35 AM #12
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Nice,,, but me being the type who doesn't mind doing regular maintenance on my gun,,, I'll keep my QEV,,, the again, lol,,, I just traded my 07 for a 08.

How many times do/did you seasoned 07 owners replace QEV's anyways?
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Old 10-28-2008, 12:53 AM #13
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so far...once...and I didn't need to, I just got bored of waiting for it to go out, I've used this thing every weekend since I got it lol
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Old 10-28-2008, 01:11 AM #14
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I traded my 07 for a 08 a while back,,, but when I had it I never had any issues with it,,, and I threw a bunch of paint out of it. I actually like working on my guns so a few minutes (heck,,, I can do it for hours,lol) of maintenance is a non-issue to me.

I can see where you went with this xluben and I give you props
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Old 10-28-2008, 05:57 AM #15
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Quote:
Originally Posted by Chuckles23 View Post
Interesting. Id like to hear jack/nicky/coyuts thoughts on this.
Me too. I don't see any issues besides the solenoid possibly seeing a bit more oil.

Quote:
Originally Posted by RoobixKyoobe View Post
wow. a home made way around the zick kit.

i too want to hear just a pe tech's thoughts.
I wouldn't do this mod as a way around the zick kit.

Quote:
Originally Posted by matrixshooter93 View Post
but since it is bigger does the grip frame fit smooth? i own an 08 not an 07 so i wouldnt know....
The banjo bolt is much smaller than the QEV. It fits fine.

Quote:
Originally Posted by paintballer231 View Post
I personally like the new diaphrams too much to do this ,but its a nice little trick.
I agree that a user-serviceable part is great, but a maintenance free part that never fails is even better

Quote:
Originally Posted by autococker2k6 View Post
the only thing about this mod is i hate those type of barbs...but all in all gj
Same barb that's on the QEV.

Quote:
Originally Posted by Lucky4143 View Post
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Thanks.

Quote:
Originally Posted by oggfueler View Post
I traded my 07 for a 08 a while back,,, but when I had it I never had any issues with it,,, and I threw a bunch of paint out of it. I actually like working on my guns so a few minutes (heck,,, I can do it for hours,lol) of maintenance is a non-issue to me.

I can see where you went with this xluben and I give you props
QEV diaphragm's seem to need maintenance very infrequently. To the
point that, in most people's gear bags, it probably becomes a part that is
never serviced until it fails or maybe once per season. This brings up a
decent chance that the part will eventually fail during use, and possibly
during that crucial game of the tournament, etc.

I have no problem working on guns, but this just seems like the type of
maintenance that might slip through the cracks one too many times and end
up biting you when you need it most. I know this isn't for everyone, but as
far as making the Ego the gun that never breaks, this further decreases that
possibility.
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Old 10-28-2008, 11:19 AM #16
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not to bash, but its called a timmy
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Old 10-28-2008, 12:12 PM #17
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I like the idea and it can help fix it in a pinch if the QEV does brake.
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Old 10-28-2008, 03:14 PM #18
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I am incredibly intrigued by this and very tempted to do it to my 07.
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Old 10-28-2008, 03:53 PM #19
oggfueler
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not to bash, but its called a timmy
Yeah,,, there's truth to that.
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Old 10-28-2008, 03:57 PM #20
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I think there's plenty of things that differentiate the two guns. If the ONLY
difference between an Ego and a Timmy was a single QEV, then I would
agree. But obviously that is not the case.

Now, lets diverge from the vs. thread and keep this from getting locked.
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Old 10-28-2008, 04:12 PM #21
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hmm interesting
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