Modified Career 202s
hi every one & this is my first topic
i did some modification on my career 202s and i will show the results here
chrony test before modification with 77.9 gr
2900 psi
1- 950
2- 900
3- 880
4- 850
5- 806
refill 2900psi
1- 888
2- 861
3- 843
4- 822
5- 812
the firs thing i did since i got the gun was chrony test the first 5 shots i never got same result ever
the second 5 shots which is the usual velocity i get
so i figured it must be modified
first i machined an air port with a bigger hole and and replaced the original
machined a longer hammer and a heavier one
the original spring has 27 coils and almost 108mm so i changed that with 35 coils 150mm and a bit bigger wire size
then i shot 5 shot and i got the usual velocities
i checked again and the o-ring was damaged i replace it and here is the results with 77.9 gr
2900 psi
1- 1058
2- 1200
3- 1032
4- 952
5- 892
and since then i never got to the 1200 again but it is 1000+
i did cast some 105 gr colt bullets but didnt try that yet
and if any one has experience with the valve modification feel free to share , i am afraid touch it
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Viewing 8 replies - 1 through 8 (of 8 total)
1- 1058
2- 1200
3- 1032
4- 952
5- 892
i didnt get 1200 again , but i am getting 900+ now i think the spring lost some of its stiffness
I wonder what would happen if you get a lighter hammer, with a stronger hammer spring, and a stronger valve return spring. Your numbers may stay a little closer to say 950fps. Which is still very, very good..
i never played with the valves before i am afraid that something gets wrong
but if i use a lighter hammer / stronger spring / valve spring will that reduce power ?
1- 1058
2- 1200
3- 1032
4- 952
5- 892
i didnt get 1200 again , but i am getting 900+ now i think the spring lost some of its stiffness
I wonder what would happen if you get a lighter hammer, with a stronger hammer spring, and a stronger valve return spring. Your numbers may stay a little closer to say 950fps. Which is still very, very good..
guys, it does not bother you that these Korean PCP’s have barely 2mm tube walls? I took several of these apart, and the 202 is very appealing to me, but when I look at the air tube, I am concerned.
Same thing is true for the Sumatra’s.
But other then that the 202S is a fun gun to shoot.
ps. My buddy wanted me replace the buttstock on the 202S. We though one from Sumatra might fit or something custom. But I was not able remove the buttstock from the 202. Anybody tried to remove it on their 202?
not yet am still working on the my 9mm i just got it to 190 foot energy
i’ll have be working on that in next weeks
now my 909 shoots around 145 foot energy
i was woundering about your 909 .45 not the 202s 😕
this is what i got when i did chrony test first time
1- 1058
2- 1200
3- 1032
4- 952
5- 892
i didnt get 1200 again , but i am getting 900+ now i think the spring lost some of its stiffness
Have you tweeked your 909 ???? If so what velocities are you getting with it??
Viewing 8 replies - 1 through 8 (of 8 total)
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if some one has the experience with the valve mod please help
i want to do it but i dont anything to go wrong