Umarex Modded Notos lost fps by double
- Thread starter Snapazonie
- Start date
Wow. Yours is black. That's different. It looks extremely far out. There can't be gas in that
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First drain all the air out by loosening the regulator pressure gauge part way so the air escapes
As soon as you hear it hiss then stop and let it run out.....DO NOT REMOVE it all the way
As soon as you hear it hiss then stop and let it run out.....DO NOT REMOVE it all the way
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Did you buy this from someone else?
My gun and every notos I've seen has a silver degas screw. Yours is black and you're telling me there is 230bar in your tank. Start unscrewing that screw
The reason I ask is, that for that screw to be that far past flush and your tank having air it would have to have been replaced with a 10mm grub screw. Because mine is a 5mm and before it even gets flush it starts venting heavily.
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Good. Let it empty completely. Once the tank is empty.. cock the gun and fire two shots. Then re fasten the screw. Then the silver screw above your tank, below your barrel.. the big screw... Screw that in a good bit. Several turns. Then fill your gun. If everything has worked out. It should be at. A much lower pressure. Then slowly unscrew that bolt until your regulator pressure is 14-16 Mpa
With that barrel length. At that pressure you should be well above 750 with 15.89 pellets.
I was at 805fps when I jumped my barrel to 380mm and didn't have a port job. yours is 500mm.
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Higher pressure doesnt always means higher velocity. In fact it always means lower velocity if your hammer spring hasn't been adjusted to match it.
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I appreciate all the help. Do I need to screw my hammer spring in all the way. It 2 turns in now. And I haven't ported anything.
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No. You're gonna unscrew it to flush with the receiver when you're filled and ready to tune. It's gonna take a few shots but once you're at 15mpa take 5 shots. If you like the average velocity and the readings are close to each other. Just keep it there. Or. You can make ¼ turns and shoot. A few shots every quarter turn. You're trying to find a velocity you like where the shots are very close in speed to eachother. Eventually you'll reCh a point where the velocity will go no higher. Or it will drop. That means you have too much tension on your hammer and you need to go back out.
Ignore the number. Because mine are from a full port job. Take note how all the shots except for the one 765fps shots are within 11fps of each other. That's what you're looking for. That one outlier was a 19gr slug. The rest were 18.13 pellets.
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I'll let ya know tomorrow how it did. It's late and I'll fill it back up tomorrow. I really appreciate all the help.
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Yeah man. Never hesitate to ask. You're playing with very dangerously high pressures, always better to ask than to possibly hurt yourself or break something. You can private message me or update this thread and I'll try to help. There's tons of notos tinkerers on here that can give you better information than I can.I'll let ya know tomorrow how it did. It's late and I'll fill it back up tomorrow. I really appreciate all the help.
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Rabbit,
Thought I was the only one on the forum using the E-9800X chrono, not bad for $60. WM
Thought I was the only one on the forum using the E-9800X chrono, not bad for $60. WM
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Nope, its the Cricket, the dream valve has one gauge on either side and the regulator adjustment on the bottom.
Your dang lucky the gun didn't pop an oring. 14.5 MPa is about right for a modded gun like yours.
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Yeah it's not a dream valve and I did blow the o rings in the tiny cap to try to set the reg. I should have looked up mpa to psi. Noob mistake. Hopefully it's worked out now.
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Just to make damn sure.
Call it over confirmation or ocd
The things are shaped so similar..
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