GTA

All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: Deckard1973 on May 21, 2018, 01:58:59 PM

Title: Some SS Valve and SSG testing
Post by: Deckard1973 on May 21, 2018, 01:58:59 PM

Some numbers I got running the SS Valve and a SSG.
Gen I Mrod, stock TP
18.13grn JSBs

14 shots
Min - 935
Max - 976
Avg - 954
S-D - 15.2
ES - 41

935
974
976
975
971
963
959
953
948
945
943
943
939
935

20 shots
Min - 854
Max - 1000
Avg - 927
S-D - 45
ES 146
1000
994
982
979
971
964
940
948
938
930
927
921
915
907
898
884
877
871
858
854

10 shots
Min - 947
Max - 1009
Avg - 975
S-D - 22.8
ES 62
1009
1003
996
989
976
969
970
953
947
947

Title: Re: Some SS Valve and SSG testing
Post by: Motorhead on May 21, 2018, 02:42:31 PM

Unregulated ... need to open up transfer path size to @ .165"
Your making good power, but at the expense of a long dwell and using quite a bit of air per shot.

JMO ...

Title: Re: Some SS Valve and SSG testing
Post by: oldpro on May 21, 2018, 03:05:56 PM

Quote from: Motorhead on May 21, 2018, 02:42:31 PM

Unregulated ... need to open up transfer path size to @ .165"
Your making good power, but at the expense of a long dwell and using quite a bit of air per shot.

JMO ...

Scott is dead on. Your forcing a lot of air threw a tiny orifice resulting in poor air consumption.

Title: Re: Some SS Valve and SSG testing
Post by: Deckard1973 on May 21, 2018, 03:22:57 PM

Thank you gents.

With the old valve and the SSG, it was practically sipping air. 
Crazy quiet too.

Title: Re: Some SS Valve and SSG testing
Post by: mann on May 21, 2018, 10:23:58 PM

Are you using a lighter hammer with the ssg to. I'm waiting for ss valve valve to get back from jsa . Trying to decide if I should use a ssg with my aluminum 33 gram hammer

Title: Re: Some SS Valve and SSG testing
Post by: Deckard1973 on May 21, 2018, 10:29:38 PM

Quote from: mann on May 21, 2018, 10:23:58 PM

Are you using a lighter hammer with the ssg to. I'm waiting for ss valve valve to get back from jsa . Trying to decide if I should use a ssg with my aluminum 33 gram hammer

I am using the SSG hammer (not sure about the weight).
Let me tell you, with the old valve and SSG (and hammer), I could get 30 shots and go from 3000psi, to about 2200psi. 

Once I get the TP opened up (per Motorhead snd OldPro advice) I will post more results.

Right now, I am getting a lot of wasted air.
But I am kinda liking the FPS.

Title: Re: Some SS Valve and SSG testing
Post by: oldpro on May 21, 2018, 10:35:23 PM

Quote from: Deckard1973 on May 21, 2018, 10:29:38 PM

Quote from: mann on May 21, 2018, 10:23:58 PM

Are you using a lighter hammer with the ssg to. I'm waiting for ss valve valve to get back from jsa . Trying to decide if I should use a ssg with my aluminum 33 gram hammer

I am using the SSG hammer (not sure about the weight).
Let me tell you, with the old valve and SSG (and hammer), I could get 30 shots and go from 3000psi, to about 2200psi. 

Once I get the TP opened up (per Motorhead snd OldPro advice) I will post more results.

Right now, I am getting a lot of wasted air.
But I am kinda liking the FPS.

Your shot count will go way up with a larger TP and exhaust port so will the power. I port my .22 to .172 or 80% of bore

Title: Re: Some SS Valve and SSG testing
Post by: mann on May 21, 2018, 10:42:17 PM

I know with my valve leaking I was getting 10 shots with my .25 ports open to .170 was getting like 930 with 34 gr mk 2 using a aluminum hammer that I machined which is about 33 grams can't wait to get my valve back