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Old 05-30-2013, 06:30 PM   #11 (permalink)
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I wold deffinetly suspect your output psi. Personally I think 260 fps is fine for pump. I always play in close, but I wouldn't want to be much less then that. If you have a barrel kit laying around you may be able to get the velocity up by underboring. Your Ninja should be able to be adjusted to the 800-850 range. It has to be taken apart and have the correct number of washers in place. It should be something your local shop can do easily. I guess I haven't tried mine on the Hammer 7. I just use 12grams. It always worked fine on my other Nelsons ( Phantoms and old Hammer)
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Old 05-30-2013, 06:36 PM   #12 (permalink)
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Just another thought, with the summer heat I've had 12gs read 1200 psi on the gauge. So if that's happening to you, it could be the cup seal after all. It's worth checking.
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Old 06-09-2013, 10:17 AM   #13 (permalink)
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my hammer shot about 290 from the box, ninja reg that give out just over 800psi.
you have easily make a reg tester whit an asa and a 1200 gauge
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Old 06-10-2013, 08:37 AM   #14 (permalink)
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I was missing the gauge, but it came in a couple days ago. Now, I just need to have some quiet time. I did test a couple of my tanks including the DXS 50ci, 4500, and so far, none above 700psi.
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Old 08-03-2013, 02:39 AM   #15 (permalink)
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Update: Got at least 3 tanks with more than 800 psi output. Took it for a little spin and best I got was 250fps with most shots in the 230-240 and a few in the 250s using Freak barrel with 0.684 back.

I have a Ninja SHP reg coming in the mail, just need to mount it and maybe shim up one of my other tank regs and try again.

Any other thoughts?

BTW, I did have at least 2 double feeds and one triple feed. Not sure why as I didn't do anything different and was using the same paint.
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Last edited by longhornjake; 08-03-2013 at 02:52 AM.
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Old 08-04-2013, 01:41 PM   #16 (permalink)
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Get close! LOL, you may need to play with a Nelson spring kit. Make sure the cup seal didn't back out, try CO2 , or like you said try to increase the output psi of your reg. don't normally recommend this but clipping a coil off the valve spring should help
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Old 08-08-2013, 02:58 PM   #17 (permalink)
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What oneshot said. My h7 chronoed at 220 with velocity screw maxed out. I put an o ring in the back of the hammer like a spring spacer, and clipped a coil of the valve spring and now it's running at 280 (field limit) very consistently.
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Old 11-04-2013, 11:05 PM   #18 (permalink)
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Update: I picked up a SHP Ninja reg and placed it on a used 45/4500 that I was getting hydro'd. Output is well over 1200psi (limit of my reg tester). Of course, with the screw all the way counterclockwise, I can't get under 305. I may try to remove a shim or two here. Any other ideas? I say Ty post somewhere else about the sweet spot being 925-950...
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Old 11-06-2013, 02:37 AM   #19 (permalink)
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I would suggest playing with the output pressure. I used an Air America Armageddon for our experiments, so pressure change was easy.

I noted that around 950 psi the velocity began to fall, so I decided this was the sweet spot. I also noted that at that pressure the markers overall velocity fluctuations went down to +/- 2 fps.

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Old 11-06-2013, 10:10 AM   #20 (permalink)
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Thanks, Ty! That just gives me an excuse to go out and empty a hopper or 2 to empty out the tank and mess with the shims. Keep up the great custom work. I love seeing your builds on here.
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