Edit. This project was parted out and the body kit, which was modified by Mozak for IVG threads and side feed mod, now belongs to Warmongrel and he has built a really cool sniper around it. See posts below.
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I approve of this message"but we all have electros and you guys only have pumps, this wont be fair"
(chuckling quietly) "we know"
My collection:
Memornix's Collection V2 - mcarterbrown.com -
What is this side feed mod do you speaketh of? I must investigate.Originally posted by iamthelazerviking View Post
I have a '95/'96 cocker I converted. The top thing on the list for mine is to get it threaded for an IVG. Just haven't done it yet.Comment
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I just purchased this 97 body from iamthelazerviking and decided to hijack his thread and update on the progress. 😀 So far I’ve added an ACP Slice silver level pump kit and ACP 45 frame with Hogue 45 style wrap grips. Still waiting on some parts to complete this build.
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Slice kit looks good on that! I’m building a ‘mid ‘90s sniper and cocker right now, so nice to see different build options!Comment
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So I took it to the field last week and it definitely needs some tuning. I sweet spotted the regulator using a good paint to bore match. The regulator I was able to sweet spot at 300 PSI. I'm using CCM springs on a ACP lower tube kit and for the life of me I couldn't get the velocity above 250 FPS with the IVG screwed a few turns in from flush. I had to turn the IVG in about 5 to 6 turns to get it to shoot around 280 which has really compressed the hammer spring. Do you think I should change the valve and hammer spring or just the hammer spring to a heavier spring to get the velocity up? Also, it makes a fart/quack noise only when holding the pump handle forward. I been reading it's due to hammer bounce off the valve which makes sense because the hammer spring is very compressed now. Would changing the hammer spring to a heavier one also get rid of the fart/quack sound when holding the pump handle or is that just the way it is? I ordered a spring kit and will play around with it. If any of you pump/autococker gurus have advice let me know.
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I was about 4 full turns in from flush on the IVG before sweet spotting, and any adjustment to the regulator wouldn't get it past 250 FPS, it was consistent just low. I was using a .676 Lapco breech sizer so it was underbored a bit, GI 5 star paint runs so small. So I had to crank the IVG in about 2 more turns in to get it to 275 FPS. Unfortunately, I didn't bring my reg tester to the field and checked my regulator pressure when I got home and it was exactly 300 PSI after sweet spotting. At home I put some reball through it using the .676 bore and was shooting about 300 FPS. I'm guessing reball is lighter and more consistent than the GI paint though. I'll check my tank reg pressure, I took out all the shims out of my Ninja Pro V2 reg so it should be around 450 psi...maybe I should I add a shim back in. -
I think I figured it out, I pulled out the hammer spring and reseated it in the lower tube. It might have been binding, the threads Mozak cut for the IVG in the lower tube are pretty sharp. I was able to get it to shoot 300 FPS with the IVG flush now. I'll still play around with it... -
Warmongrel ah I didn't think of that...yeah maybe turning the IVG in all the way and back out s few times will help with the sharp threads
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The 97 had longer springs than the newer guns, no?Comment
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I have an unopened pack of Madman 97 springs. I just built my 97 pump with an aka valve and shocktech hammer. I used the aka valve spring (same length as those in package) and the shocktech hammer spring(shorter then those in package). Using the CCM IVG I had to screw the IVG 6-8 turns in to hit 270-280. I replaced with a longer black spring I had from my many projects and hit my mark with just 2-3 turns in. I did sweet spot the regulator but have no idea what pressure is. I suspect it's higher. When I get tester, I'll set it at 300 and crack open that pack of springs. Thinking I should be able to spring that with light springs.....Comment
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Good info thanks, FireyMartel! Before I reseated the CCM hammer spring I did stretch it a bit. It’s shooting at 300 FPS with reball and regulator is set to 300psi. I’ll try with paint when I hit the field this weekend. I bought an ACP spring kit so I can play around with it if needed, fingers crossed though! I noticed with reball shooting in the 300’s gets you around 270-280 ish with paint, anyone else experienced that?Comment
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Reballs can be helpful but the different material/weight/size compared to actual paint will lead to different results -
I hadn't noticed a difference. Not saying there isn't one. Just never noticed. I chrono in the basement with riot balls. I make very little adjustments if any at the field. Now I must pay attention on the difference and see.
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