GTA
All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: shorty on January 01, 2014, 04:03:28 PM
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Finally got a .22 synrod. First PCP and I am really excited. I have been reading a lot about tuning (A-team) and others on forums. I think I understand it, but Iam not sure.
My goal would be to:
1) Use FTT's 14.66
2) FPS hover 800 fps +/- 30fps
3) Highest shot string (30 at minimum , would love 40)
4) Fill pressure (somewhere around 2250 if possible)
4) Least amount of pumping possible.
I do not know the terminology of the settings as I should know by now, so bear with me while I call the settings out as 1/4" allen wrench, 1/8" allen wrench , and V for velocity set screw. All adjustments I have made are from full out CCW just like described in the A team write up. Have been using a F1 Chrony.
All and any advise to get my goal would be greatly appreciated as I am going through pellets like crazy to find my goal. Here's my final tune until I can get some advice. My arms are getting tired of pumping...
1/4" 2 turns
1/8" 6 turns
V - 2 turns
Start 2500psi / 1-10
842
834
841
822
831
839
err
825
829
834
2350psi 11-20
821
828
818
813
822
err
818
820
803
804
2050 psi 21-30
817
813
814
809
801
err
802
781
792
806
End 1800 psi....
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Completely new at PCP John B. very green.
Here's my goal. What I need to know is what to adjust to get there.
"My goal would be to:
1) Use FTT's 14.66
2) FPS hover 800 fps +/- 30fps
3) Highest shot string (30 at minimum , would love 40)
4) Fill pressure (somewhere around 2250 if possible)
4) Least amount of pumping possible "
Is it even possible to get to my goal?
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Have you read this before?
http://www.network54.com/Forum/419052/message/1315444650/Poor+man's+M-Rod,+P-rod,+etc.+%26quot%3BRegulator%26quot%3B+explained+(Long)September+7+2011+at+8-03+PM%09bsta (http://www.network54.com/Forum/419052/message/1315444650/Poor+man's+M-Rod,+P-rod,+etc.+%26quot%3BRegulator%26quot%3B+explained+(Long)September+7+2011+at+8-03+PM%09bsta)
Or to meet your goals, you could drop in a regulator.
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I have read about it but not that particular thread. I think its called the bstaley for bhb tune that uses three orings. I would like to keep stock if possible, but if that's the direction I need to go in, I will go.
I just need to know if the stock synrod is capable of my goal without the mods before I start really changing things.
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Start with;
V = 4 CCW from full CW
1/8" = fully CCW
1/4"= fully CCW
Fill to 2500 psi
First 1-3 shots should be near 785 fps - if Higher, turn 1/8" CW 1/2 turn at a time (refilling every 4th shot)
if Lower, turn 1/4" CW 1/2 turn at a time (refilling every 4th shot)
Once your shot string starts around 785 fps, go ahead and shoot a string until the fps drops back to around 785 fps, then post it here
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HillGSA,
Boy that took a long time, but thanks for the help. We are getting somewhere now.
1/8" allen wrench 6-1/4 cw
1/4" allen wrench 0
V - 4
Starting pressure 2500psi.
Start psi 2500 1-10
783
786
err
812
819
812
795
807
820
813
2300 psi 11-20
803
814
816
err
826
826
816
816
825
825
2200 psi 21-30
841
err
844
829
822
835
830
840
828
err
2000 psi 31-40
err
err
844
846
852
842
840
846
844
854
1800 psi 41-50
837
836
err
846
832
834
853
err
828
err
1600 psi 51-60
822
813
822
809
814
803
err
799
793
793
Ending psi 1300...
I am sure that was just the first part of tuning, what's next ? Thanks for your help.
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Nice
Now - fill to; 2100 psi
Turn; V - 1 full turn CW
Shoot over chronograph and record fps, if at or near 825 fps stop. Otherwise, turn V - a little at a time (about 1/8 turn CW) between shots, until reading of around 825 fps - topping back off at 2100 psi every 4 shots.
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HillGSA
Couldn't finish last night. Just started working on it again.
2150 psi
1/8" allen wrench 6-1/4
1/4" allen wrench 0
v - 1-1/2
826 fps
Is there anything else we have to do ? It took about 72 pumps to get it from 1600psi to 2150.
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HillGSA
Couldn't finish last night. Just started working on it again.
2150 psi
1/8" allen wrench 6-1/4
1/4" allen wrench 0
v - 1-1/2
826 fps
Is there anything else we have to do ? It took about 72 pumps to get it from 1600psi to 2150.
When you feel like it ;D
Fill to 2450 psi and shoot 3 shots, if the fps look good (around 800 fps or so), go ahead and shoot another string. If not post back before continuing ;)
You may find this article/video helpful;
https://www.pyramydair.com/article/Using_a_hand_pump_May_2006/30 (https://www.pyramydair.com/article/Using_a_hand_pump_May_2006/30)
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Thanks for all the help HillGSA. I think I just needed a little hand holding during the tuning process. Thanks again. I know I am not finished yet, but I will continue.
I just can't do it right now. I had a little bit of a problem on my side. I shot the "dang" F1 chrony SH@#.
O well. stuff happens. I'll see if I can get it working again.
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Thanks for all the help HillGSA. I think I just needed a little hand holding during the tuning process. Thanks again. I know I am not finished yet, but I will continue.
I just can't do it right now. I had a little bit of a problem on my side. I shot the "dang" F1 chrony SH@#.
O well. stuff happens. I'll see if I can get it working again.
Yep that happens sooner than later ;)
You are probably at a good place in your tune… maybe just shoot the rifle for a while and enjoy… there will always be room for tweaking ;D