Kral Information Thread. “Contribute what you know “
- Thread starter Perle
- Start date
With the right spring you can get those crosmans going in the 950s or so. I had my np03 doing 900 with 18s at one point, shot count was too low for me though.
Port the barrel and valve holes and up the fill pressure a few hundred psi, you'll get there. I'll get you some spring measurements after work.
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just pulled the stock spring out, and it measures 2.75" +/-
it is not strong at all compared to my crown mkII spring.
it is not strong at all compared to my crown mkII spring.
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Do we know the lb rating of the stock spring? I wouldn't know how to test other than compressing it into a scale somehow
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@gendoc,
just checked the spring i use in my krals with the shorter hammer that comes in the mega and np03. Its beefy.
2" long, .317" ID, .50" OD
Wire diameter: .68"
Basically it launches the hammer hard and fast, but is free flight so no hammer bounce. It's also cranked down just shy of coil bind.
just checked the spring i use in my krals with the shorter hammer that comes in the mega and np03. Its beefy.
2" long, .317" ID, .50" OD
Wire diameter: .68"
Basically it launches the hammer hard and fast, but is free flight so no hammer bounce. It's also cranked down just shy of coil bind.
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Lmao tell me about it! My cheap kral has turned out to be a pricey rig and nothings arrived yet.
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i've got a 10.5lb and a 12.5lb (corrected weight) spring coming to try.
at least i can cut off excess lbs as needed, but its trial and error.
i'm just looking for 900fps with 18.1gr jsb........
at least i can cut off excess lbs as needed, but its trial and error.
i'm just looking for 900fps with 18.1gr jsb........
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Lighten the valve spring, port to around .160-.170, heavy hammer spring, start at 3500 psi fill... might get over that 900 with 18s.i've got a12lb and a 15lb spring coming to try.
at least i can cut off excess lbs as needed, but its trial and error.
i'm just looking for 900fps with 18.1gr jsb........
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i can't see no good, i have close up vision in only 1 eye about 60%
but i can see a deer @ 100yrds perfect
thats why i'm a hunter not a paper shooter
but i can see a deer @ 100yrds perfect
thats why i'm a hunter not a paper shooter
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That sucks, I'm on my way there myself I feel. Always had great vision, but the close up stuff like little part numbers are starting to get blurry. Probably time for readers...
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Canadashootingsupply.ca has the shorter np01 and np02 barrels in stock if anyone is interested.
Np01 barrels are 10.75"
Np02 barrels are 12.6"
They will still make decent power with the other mods, and you can tuck the barrel in the np03 shroud and add an air stripper and Mrod baffles. Adds no length to the gun, but will lower power a bit.
I did use a 12.6" barrel on my first go at my kral jumbo, and still made 840 fps with JSB 25.39. Just had porting and a heavy spring.
Np01 barrels are 10.75"
Np02 barrels are 12.6"
They will still make decent power with the other mods, and you can tuck the barrel in the np03 shroud and add an air stripper and Mrod baffles. Adds no length to the gun, but will lower power a bit.
I did use a 12.6" barrel on my first go at my kral jumbo, and still made 840 fps with JSB 25.39. Just had porting and a heavy spring.
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i'm just describing the only working eye i have.....the other is zero efficient.
i have had to learn how to shoot lefty, it seems i am better that way
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got the springs in, 1st i installed 12.5lb spring. adjustment screw only went in about 1/3 of what the stock spring did. i'm also adjusting down until no coil bind.
hope to find a good velocity with the 18.1gr, but 1000fps with the cpd 14.3gr is fine too accurately !!!
testing in the morning.
hope to find a good velocity with the 18.1gr, but 1000fps with the cpd 14.3gr is fine too accurately !!!
testing in the morning.
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My Pyramid Air refurb np03 .22 was on my porch when I got home. Didn't have a 'brand new' vibe but no marring or real signs of use. Had areas of lubrication and overall a solid feeling little gun. Even has air in the tank. Super happy with this thing and can't wait for the parts to start being delivered.
My cats damn near hit the ceiling when I dry fired it in the house
My cats damn near hit the ceiling when I dry fired it in the house
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