Well when you're shooting at an upward angle, yes it will consistently shoot slightly high. But I know what you're saying.
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Velocity Increase Is this possible
- Thread starter bubblerboy64
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Well when you're shooting at an upward angle, yes it will consistently shoot slightly high. But I know what you're saying.
If its new give it some time to break in and let everything seat with the reg. I have read around that a regular may need time to break in. Also as mentioned in this post was the hammer spring. Defiantly look into that. If your hammer spring is to week then you could still have the bell curve effect even with a working regular.
Just crono it from 250 bar and shoot it down until it drops off the regulator. Watch your fps over that process and if the curve is rather large then my guess would be a regulator issue. On the other hand if the curve is small then I would say look at the hammer spring.
Just crono it from 250 bar and shoot it down until it drops off the regulator. Watch your fps over that process and if the curve is rather large then my guess would be a regulator issue. On the other hand if the curve is small then I would say look at the hammer spring.
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Many guns have a sharp increase in velocity as it falls off the regulator, then drops straight down after that. The whole resevior turns into a large plenum because the reg never seals. Sometimes, a larger plenum with a lower psi produces more energy than a small plenum with a higher psi. This can account for a short spike in velocity.
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My 2 mo old cricket:
33.95 mark 2
Experimented fill pressure. Fill to 225-250 bar. W/NO WIND 3"gp @130 yds. 1 1/4" @100 25-75 dime to quarter.
YES there's an off'er in there, if you could see me shake you'd be amazed i could hit any thing over 50 yds.
I haven't shot 25g much. They are a little loose in the wind and my crick shoots them well over 925 and spiralling would probably be an issue. I'll experiment .
I can shoot crick almost to the blue line withput loss of accuracy. Very small or no poi drop
33.95 mark 2
Experimented fill pressure. Fill to 225-250 bar. W/NO WIND 3"gp @130 yds. 1 1/4" @100 25-75 dime to quarter.
YES there's an off'er in there, if you could see me shake you'd be amazed i could hit any thing over 50 yds.
I haven't shot 25g much. They are a little loose in the wind and my crick shoots them well over 925 and spiralling would probably be an issue. I'll experiment .
I can shoot crick almost to the blue line withput loss of accuracy. Very small or no poi drop
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OK, I was able to run some over the chronograph. Shooting JSB 33.95 MK 11 First shot was 961.5. Next shot was 982.7 and for the next 14 shots it dropped about .5 to 1.0 FPS at shot number 16 it jumped up 4.6 FPS and then started to drop about 3 FPS so David's comment about what happens when it drops off the regulator might apply here. This happened at about the 100 bar spot the gun was filled to about 230 bar to start.
I don't think that increase of 5 fps would have anything at all to do with my experience with the shots climbing SO?? I've concluded that the guns fine.
What it does tell me is that I don't want to shoot the gun under 100 bar or not at that distance.
I also am going to dial the FPS's back to about 900 FPS which should get me more shots per fill and it was what Charlie had the gun set up for.
Thank's everyone for your suggestions and explanations of air gun function.
I don't think that increase of 5 fps would have anything at all to do with my experience with the shots climbing SO?? I've concluded that the guns fine.
What it does tell me is that I don't want to shoot the gun under 100 bar or not at that distance.
I also am going to dial the FPS's back to about 900 FPS which should get me more shots per fill and it was what Charlie had the gun set up for.
Thank's everyone for your suggestions and explanations of air gun function.
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I agree, its shooting way too hot. Back off the HST until you're getting approx. 900 to 910 FPS with the fill pressure right around 200 bar. Once you do that, fill it back up to about 230 to 240 bar, and shoot a string. You should be getting at least 40 shots before it drops off the reg. at 60 FPE. I think Charlie sets the reg. on those to right around 130 bar if he installed the power plenum.
So, just to be exact, it came set up by Charlie Freer, and you changed it? You turned the HST in to get more FPS with the Hammer? Why? When he sets up a Cricket, its probably as good and efficient as its going to get. Not sure why you wanted more than 60 FPE?
The game you shoot certainly won't notice the difference between 60 and 65 FPE. Plus your gun will be more accurate and more efficient at around 900 to 910 FPS or so than where you have it. If you feel you want or need more than what a .25 heavy can give you, I suggest buying a .30 caliber gun...
So, just to be exact, it came set up by Charlie Freer, and you changed it? You turned the HST in to get more FPS with the Hammer? Why? When he sets up a Cricket, its probably as good and efficient as its going to get. Not sure why you wanted more than 60 FPE?
The game you shoot certainly won't notice the difference between 60 and 65 FPE. Plus your gun will be more accurate and more efficient at around 900 to 910 FPS or so than where you have it. If you feel you want or need more than what a .25 heavy can give you, I suggest buying a .30 caliber gun...
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Hello Sir, hope you are doing good...
Though my query is four yrs late from your post, I request if you could tell me regarding achieving 925 fps with 34 gns on your Cricket, at how much pressure the Regulator was set at ??
Best Regards,
Stay healthy, stay safe.
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An empyrical explanation against believers of how an air rifle works and what the regulator is for.
Lets understand how an air rifle works in order people stop playing with the regulators. In a rifle with hammer system there are two forces in fight, the preassure on the cilinder, bottle or plenum, and the force of the hammer (spring on tensión that is release with the trigger) to open the...
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Dear EMU,An empyrical explanation against believers of how an air rifle works and what the regulator is for.
Lets understand how an air rifle works in order people stop playing with the regulators. In a rifle with hammer system there are two forces in fight, the preassure on the cilinder, bottle or plenum, and the force of the hammer (spring on tensión that is release with the trigger) to open the...
THANKS for responding. You are right, that's what Mr Charle Frearalso also mailed me (on my request query) that there is not MUCH of gain going beyond 133 bar in Cricket .25.
(I did mention to him my unwillingness on the aspect of No drilling of air ports and No installing heavier hammer).
My aim is to reach arnd 930 or 940 fps max with JSB 33.95s (plenum installed), and without any permt modifications and without any compromise on the internals (metal components unwillingness receiver block).
Best regards.
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I believe, reviewing my post, that I was referring to the 25grain @ the 925+. 880's for 34's. I have never had to mess with the cricket even to today. I don't know what the reg is set at. Still a shooter. I just hate that rear cocker!
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So good to hear from you Sir.... Cricket is a sturdy and simple rifle. But, rear cooking is actually a pain, rather only pain.
Unfortunately, I have endured today second painful innings to deal with problem in magazine indexing and later on cooking the rifle. I spent over three hrs in rectifying whatever I could. Hopefully, when I refill the rifle tmrw or day after, it should be working fine on the single shot mode atleast.
May God bless good persons as Mr E Rowe and Mr Charlie Frear and mates like You... they have been able to maintain my faith in Cricket.
Sir, I saved for almost an yr and had a fought with my wife to buy Cricket for approx $2600 USD... as anything over .177 is sold in black here.
Sir, I wish you good health and happiness and thanks again for responding.
Best regards from India
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Correct me if I'm wrong, but sounds like it might be regulator creep. Is the change in POI only when waiting a few minutes between shots or does it change after sitting a stay there for subsequent, quick successive shots?
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Dear mate, the post was initiated over four yrs back...... So, the indl may not see your msg.
But, as I had gone through the comments, I think it was because of very high Reg pressure of over 165 bar. With initial cylinder fill of arnd 230, he was falling off the regulator after 17 to 18 shots......JUST MY ASSESSMENT.
REGARDS
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