Daystate Revere .177 strange regulator curve???

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.177Guy

.177Guy

Member
May 10, 2024
135
100
Long Island New York.usa.
Hello guys,
this is my second time starting this season that my revere after filling up is shwoing Strange gradual increase of power and then stays there for some time!!!
this revere was set around 850fps for 10.34gr,
and I m using 10.03 barra heavy domed…
but i never experienced this strange regulator behavior before???
anyone wanna shine in on this strange behavior of my revere .177
i was also thinking it could be the weather as we are entering summer slash spring temps here in north east…
here some latest chrono chart for understanding what’s going on With this rifle.

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IMG_1721.png
 
Just guessing, but could be that there’s not enough hammer. While bottle pressure gets lower and closer to reg pressure, reg might give a few bar less and speed increases until you fall of reg entirely and shoot lower. Should not give you such a slow increase over so many shots though… and that’s a loooot of shots, all of them from one fill?! no idea how much you should get out of a revere at that time though, are you shooting it below reg pressure? Most regs don’t like that…
 
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No answers
Just questions for now
By 245BAR I assume you mean fill pressure
What is the reg set at?
As the tank pressure drops, does the reg pressure remain steady?
If not, does the reg gauge creep up, or follow the tank pressure down?
Suggestion
Run another full string noting not only fps but also note the reg gauge reading every 10 shots or so.
Maybe you will see a pattern
And of course, let us know the results

just my 2BAR
Edward
 
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Florida_Man said:
If another rifle is showing a similar pattern, I’d check the chrony and my setup. What make/model are you using?
Click to expand...
Good idea.
i m using Orcair chronograph….
i compared it with my dlx pro chrono and it was only 5fps away from each other for like good amount of shots that i tried.
 
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SilentSquirrel said:
No answers
Just questions for now
By 245BAR I assume you mean fill pressure
What is the reg set at?
As the tank pressure drops, does the reg pressure remain steady?
If not, does the reg gauge creep up, or follow the tank pressure down?
Suggestion
Run another full string noting not only fps but also note the reg gauge reading every 10 shots or so.
Maybe you will see a pattern
And of course, let us know the results

just my 2BAR
Edward
Click to expand...
Yeah 245 bar means the rifle is full to this pressure at the tank,
the reg by factory is set at 150bar.
didn’t check it since I started this season but it was last time I remember. but I will check again…
 
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.177Guy said:
Hello guys,
this is my second time starting this season that my revere after filling up is shwoing Strange gradual increase of power and then stays there for some time!!!
this revere was set around 850fps for 10.34gr,
and I m using 10.03 barra heavy domed…
but i never experienced this strange regulator behavior before???
anyone wanna shine in on this strange behavior of my revere .177
i was also thinking it could be the weather as we are entering summer slash spring temps here in north east…
here some latest chrono chart for understanding what’s going on With this rifle.

View attachment 560207View attachment 560208View attachment 560210View attachment 560212View attachment 560213View attachment 560211View attachment 560209
Click to expand...
When was the last time this gun received a rebuild? New orings and deep cleaning can really help with many issues
 
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cavedweller said:
When was the last time this gun received a rebuild? New orings and deep cleaning can really help with many issues
Click to expand...
I bought this revere last May of 2024 From Aoa.
it was working fine before Storing it for the winter.
strange thing is
my drs is also behaving the same way…
gradual increase to the set regulator pressure and then floats there till I drop enough shots for the air tank to go down…
 
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.177Guy said:
I bought this revere last May of 2024 From Aoa.
it was working fine before Storing it for the winter.
strange thing is
my drs is also behaving the same way…
gradual increase to the set regulator pressure and then floats there till I drop enough shots for the air tank to go down…
Click to expand...
Ok that’s to weird to be coincidence
 
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The gk1 is not regulated.

A regulated gun that doesn’t regulate (allows plenum to equal reservoir pressure) will exhibit the symptoms you are seeing. A slowly rising (in fps) string until the plenum/reservoir reach the previously tuned for pressure. This is due to the increased pressure applying more force on the poppet which requires more hammer to open.

Again, I’m not suggesting I know this is what is occurring with your gun because I’m not familiar with the platform or your tune but it does show those symptoms.

The fact you have two doing this is strange but, again, too many unknowns. A possible reason could be they both had moisture in the reservoir when they were stored and this may have caused issues.

Good luck getting them sorted, it’s usually something simple once they are opened up for inspection.

Dave
 
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sb327 said:
The gk1 is not regulated.

A regulated gun that doesn’t regulate (allows plenum to equal reservoir pressure) will exhibit the symptoms you are seeing. A slowly rising (in fps) string until the plenum/reservoir reach the previously tuned for pressure. This is due to the increased pressure applying more force on the poppet which requires more hammer to open.

Again, I’m not suggesting I know this is what is occurring with your gun because I’m not familiar with the platform or your tune but it does show those symptoms.

The fact you have two doing this is strange but, again, too many unknowns. A possible reason could be they both had moisture in the reservoir when they were stored and this may have caused issues.

Good luck getting them sorted, it’s usually something simple once they are opened up for inspection.

Dave
Click to expand...
Dave, i was thinking moisture intrusion and verdigris accumulation as well... air source may be questionable as two guns involved.
 
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Joedirt199 said:
Sure it is regulated? My un regged Revere has a foster fitting at the end of the air tube. Mine also has the best shooting curve from 200 bar down to 140-150 bar. Yours seems to model that shot curve.
Click to expand...
Yeah man it is huma regulated brov…
u know somethin funny I m realizing since I have been in this pcp hobby…
the firearm is the way to go…
this whole pcp equipment requires way more Maintanace which becomes headache at one point.
 
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.177Guy said:
Yeah man it is huma regulated brov…
u know somethin funny I m realizing since I have been in this pcp hobby…
the firearm is the way to go…
this whole pcp equipment requires way more Maintanace which becomes headache at one point.
Click to expand...
Thats so true.!
There are so many firearms that are quiet enough to be backyard friendly and need little to no maintenance.
And never require the aid of a gunsmith
If you are truly unhappy with your PCPs send me a PM and I will reply with my address for you to send the rifles to

just my 2 wants
Edward
 
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