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Thread: New EV2 Reg

  1. #1
    Join Date
    Jun 2010
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    495

    New EV2 Reg

    I haven't been happy with my ev2 reg for some time. It use to creep a lot and have wild velocity swings. I took it apart and found a factory oring was wrecked. Fixing the oring helped a bunch but the reg still had drifting issues over the course of a fill. It was a complicated reg to redesign and build, but it is finally done. Here is a photo of the original reg on right and new on left.

    I predict an accuracy of about 1% and a minimal shot to shot variation.

    Here is a shot string from tonight.

    It is about 1/4" longer than the original.

    Dan

  2. #2
    Join Date
    Dec 2010
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    32
    STD 1.1 fantastic Looks great and perfoms even better.I see a big difference in O-ring thickness.I`m getting very excited about getting my Marauder back.Best Marauder in
    town?Well best .22 maybe.

  3. #3
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    Jun 2010
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    495
    I think I'm done with your mrod. I'll watch for leaks but it has been very tight so far.
    Dan

    Quote Originally Posted by mark6869 View Post
    STD 1.1 fantastic Looks great and perfoms even better.I see a big difference in O-ring thickness.I`m getting very excited about getting my Marauder back.Best Marauder in
    town?Well best .22 maybe.

  4. #4
    Join Date
    Jun 2012
    Posts
    24
    Dan, that reg looks amazing!! SD of 1.1??? *DROOL* I can't wait to see the performance of the reg you're going to build me for my Swift/Chip/Dan B/Dawson Rapid MkII! I can't wait!!!

  5. #5
    Join Date
    Nov 2006
    Location
    England
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    650
    Hi Dan, you should put this up on our forum as well: http://www.ukbr22.co.uk/forum/index.php

    I think you might get a few more customers.

    Brian

  6. #6
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    Apr 2003
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    Boston, Mass.
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    Dan, she is a thing of beauty! I can't tell you how much I wish I could do what you do! Thank you for your dedication to always trying to make things better! I admire your work a lot and always enjoy seeing what new things you come up with! Hope to see you at Holbrook soon!

  7. #7
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    Mar 2008
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    Sydney Australia
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    Ok Dan the world didn't end down here, how can i get one of these, it looks the goods to me to make the EV2 even better.

  8. #8
    Join Date
    Jun 2010
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    495
    Thanks Brad. Did you get the stock yet for your Dawson?
    Dan

    Quote Originally Posted by Brad Niese View Post
    Dan, she is a thing of beauty! I can't tell you how much I wish I could do what you do! Thank you for your dedication to always trying to make things better! I admire your work a lot and always enjoy seeing what new things you come up with! Hope to see you at Holbrook soon!

  9. #9
    Join Date
    Jun 2010
    Posts
    495
    Hi Bill. This is a new design and it needs some more work before it hits the streets. I have to make a couple modifications for it to really see its potential and it will require that another reg is built and used for some time.
    The downside is of this reg is that it is more difficult to build and cost will be more.
    Also be aware that the numbers that I'm getting from my ev2 may not translate well since my gun is not stock. It has a cz barrel, different probe design, and the barrel is oringed for better air control.
    Also be aware that a regulator is just one variable that affects velocity variation. You can have the best regulator in the world but other variables such as pellet, bore, air sealing, lubrication, and action variation can render the guns sd average.
    When I use crosman premier pellets vs jsb I usually get about a 40% increase in extreme spread, all else equal.
    Dan

    Quote Originally Posted by Bill Collaros View Post
    Ok Dan the world didn't end down here, how can i get one of these, it looks the goods to me to make the EV2 even better.
    Last edited by DanB; 12-22-2012 at 08:36 AM.

  10. #10
    Join Date
    Nov 2006
    Location
    England
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    650
    You have an enquiry on our forum as well Dan, if you haven't already seen it - looks like Xmas is cancelled for you

    Brian

  11. #11
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    Apr 2003
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    Boston, Mass.
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    Hi Dan,
    No stock for the Dawson yet.
    Brad

  12. #12
    Join Date
    Dec 2012
    Location
    Florida
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    19
    Standard Deviation of 1.1. That's just incredible. I think most air gun tuners have more deviation in their chrono itself.

  13. #13
    Join Date
    Jun 2010
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    495
    Here is a string from last night.

    The average is a little different. The first string was with a 2k fill pressure, the second was a week later with a 3k fill. I will have to redo the tests since I may have used a different pellet the second time. If it was the same pellet then I will have to lower my reg pressure a little so that the average velocity is the same at a high fill and a low fill.
    Here is another nice string shot with a .25 marauder with my reg and debounce hammer.

    All of these are with unsorted pellets.
    Dan

  14. #14
    Join Date
    Nov 2006
    Location
    England
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    Hi Dan,

    I take your point that the other alterations you have made to your rifle may have some bearing on the results, however the effect of those components can only be highlighted by the efficiency of the regulator........whichever way you shake it, those reading are impressive.

    Don't suppose you want to work on the TM1000 next

    Brian

  15. #15
    Join Date
    Jun 2010
    Posts
    495
    Actually Brian I have worked on a TM, Mark Ns gun, aka Joewillie, has one of my regs. I have a couple more TMs on the way here for some new regs.
    Interesting bit about the new ev2 reg, the pressure is set at 1325psi. Most ev2s like about 1500 psi. The new reg has more plenum volume which is the only reason I can think of for the low working pressure.
    DAn

    Quote Originally Posted by Brian_K View Post
    Hi Dan,

    I take your point that the other alterations you have made to your rifle may have some bearing on the results, however the effect of those components can only be highlighted by the efficiency of the regulator........whichever way you shake it, those reading are impressive.

    Don't suppose you want to work on the TM1000 next

    Brian

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