Daystate New Daystate Delta Wolf, erratic velocity with advanced setting

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Trucker3573 said:
@MtnMarksman I did some testing with my .25 alpha wolf yesterday. My gun is several years old so not saying this is correct. Maybe my valve needs to come out and be lubed . Anyway I was shooting factory mode. I started out with 25.39 light weight. The reg pressure is set at 150 so it will push 33.95 pellets in the 880’s. I set the factory mode to shoot 25.39 at 880. Took several shots to get it to the speed. Then I let the gun sit for 10-15 minutes not turning it off or changing the tune. Every time I came back the first shot was like 845-850….slow. Repeated the test with 33.95. After sitting the gun pretty much was in the correct speed range. The first shot sometimes was a little slow like 870-875 but nothing as pronounced as with the 25.39. I suspect a lot of this has to do with the gun having to greatly reduce tune to the valve to shoot the much lighter pellet at 880 fps. 150 bar is way more reg than needed. I think after sitting you get a bit of valve stiction causing the first shot to be slow. With the heavier pellet the gun is hitting that valve a lot harder so the stiction becomes much less of a factor. Basically a lower caliber lower power model will be more susceptible I think. Not sure if this is normal but lubing the valve may help. I haven’t done that. Just want to share my experience. I don’t think what you have going on is necessarily unusual.
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Lubing the valve with silicone oil through the vent port has helped quite a bit. Noticeable improvement the next day and has continued to get better as time and shots seem to work the lube into the oring. Still slow first shot but far less shots to stablize than before. I picked up a used .22 HP Red Wolf that I converted to .177 and a Helli board and it is super consistent on the first shot even after sitting a couple weeks. Honestly feeling it is a better rifle than the Delta Wolf Performance that cost more. Converting to .177 was some work as the barrel is a different diameter. The .22 HP 23” barrel is 14mm and the .177 17” barrel is 12mm. Fortunately, I own a couple metal lathes and ran a machine shop for 10 years so making sleeves to .01mm tolerances and cutting the oring grooves was easy for me.
 
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MtnMarksman said:
Lubing the valve with silicone oil through the vent port has helped quite a bit. Noticeable improvement the next day and has continued to get better as time and shots seem to work the lube into the oring. Still slow first shot but far less shots to stablize than before. I picked up a used .22 HP Red Wolf that I converted to .177 and a Helli board and it is super consistent on the first shot even after sitting a couple weeks. Honestly feeling it is a better rifle than the Delta Wolf Performance that cost more. Converting to .177 was some work as the barrel is a different diameter. The .22 HP 23” barrel is 14mm and the .177 17” barrel is 12mm. Fortunately, I own a couple metal lathes and ran a machine shop for 10 years so making sleeves to .01mm tolerances and cutting the oring grooves was easy for me.
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Did more testing. In my opinion largely boils down to having a reg pressure conducive to what you are trying to do. If you are shooting light projectiles with high reg settings like the computer often suggests it just isn’t going to work as well. I dropped my gun down to 125 bar from 150. Now the 25.39 grain act just like the 33.95 at 150 bar. The gun can sit and doesn’t lose hardly any velocity like it did with the light pellets at 150 bar. The software in 25 suggests 170 bar reg for 900 fps for 25.39 which is ridiculous. The 125 bar does it no problem and I can still push 29 gr nearly that fast. Both operate with little speed loss after sitting once the gun finds the correct speed.
 
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Trucker3573 said:
Did more testing. In my opinion largely boils down to having a reg pressure conducive to what you are trying to do. If you are shooting light projectiles with high reg settings like the computer often suggests it just isn’t going to work as well. I dropped my gun down to 125 bar from 150. Now the 25.39 grain act just like the 33.95 at 150 bar. The gun can sit and doesn’t lose hardly any velocity like it did with the light pellets at 150 bar. The software in 25 suggests 170 bar reg for 900 fps for 25.39 which is ridiculous. The 125 bar does it no problem and I can still push 29 gr nearly that fast. Both operate with little speed loss after sitting once the gun finds the correct speed.
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Is that in factory mode or advanced mode?
 
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