s200 mk1
Full of questions today, too much time on my hands and need some retail therapy….!!
How easy is it to tune one of these up to sensible power ??
Thanks guys.
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Viewing 7 replies - 1 through 7 (of 7 total)
Feel free mate, its all learning for me, hands on experiance is invaluable.
Dave
There will probably be a valve spring retainer with a TINY hole which will really limit power and air flow.
When I first got me Gunpower stealth, with maximum hammer spring pre-load, I couldn’t get over 12 FPE with a 12″ barrel.
I drilled out that tiny hole, and BOOM, same pellets were zooming along at about 30 FPE. Instant results.
Oh, if you need anything made or whatever for it then I would be happy to do it.
Dave
Yup, very first mod that was done to my Storm. Drill out retainer valve and drill out stem(pre anti-tamper days)
I may just tap you up on a few bits if I get the S200…. 😀
Pab, you have PM
There will probably be a valve spring retainer with a TINY hole which will really limit power and air flow.
When I first got me Gunpower stealth, with maximum hammer spring pre-load, I couldn’t get over 12 FPE with a 12″ barrel.
I drilled out that tiny hole, and BOOM, same pellets were zooming along at about 30 FPE. Instant results.
Oh, if you need anything made or whatever for it then I would be happy to do it.
Dave
One I’m looking at is .177 so 20 fpe would be plenty. I think all you need to do is remove the bolt handle to expose the nut that increases the pre load on the spring. Keep adjusting in till it won’t shoot, then turn back out bit by bit untiul it fires again…. But surely you’d need to bore out the port a little too??
Hows those stems getting on bud, really could do with a bit of gentle target shooting right now…… 😥 😆
What I do know is, that the firing valve is attached to the air tube. I would say that if it is a Pre- anti tamper rifle then I would say it would be comparable with the Air Arms rifles.
20 FPE would give a useable shot count and could maybe get up to 30 FPE but shot count would drop like a rock
Dave
Anyone????
Viewing 7 replies - 1 through 7 (of 7 total)
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hi. i have a CZ 200S MK2 in.22, and after some tuning on the rifle and IN the airtube ai have this results:
——–Pressure—-Speed
———in BAR——in m/s
1———-200——-212
2———————214,6
3———————215,2
4———————216,6
5———-190——-217
6———————220
7———————220,6
8———————222,4
9———————223,6
10——————–224,2
11——————–225,1
12——–180——–226,8
13——————–227,7
14——————–229
15——————–230,7
16——————–231,6
17——–170——–232,1
18——————–233,4
19——————–234,1
20——————–235,3
21——————–236,9
22——–160——–238,3
23——————–239,6
24——————–240,5
25——————–241,4
26——————–242,4
27——–150——–243,4
28——————–244,6
29——————–246,1
30——————–246,4
31——————–247,4
32——–140——–247,6
33——————–247,9
34——————–247,4
35——————–247,7
36——————–247,1
37——–130——–247,1
38——————–247,4
39——————–245,6
40——————–244,9
41——————–243,9
42———120——-243,1
43——————–241,4
44——————–240
45——————–239
46———110——-237,4
47——————–234,8
48——————–232,1
49——————–229,4
50———100——-227,3
51——————–224,1
52——————–220,8
53——————–217,8
54———-90——-215,2
55——————–211,8
56——————–207,6
57——————–204,9
58——–80———201,8