EVOL Does BETH have a sick regulator

[Dairyboy]

So I'm going to say the first slow shot was simply temp change, say put away cold and warmed up probably. But yeah ES is simply just not the right hammer spring tension with the reg pressure. Once you figure out what you want to shoot you'll want to change the reg pressure where your max fps is around 15-20fps above the target speed. Can take some trial and error but results are worth it.

 

[mr007s]

Want to share my plan for adjusting Beths health;
First concern is I dont have a vise and that may be a problem getting the barrel loose. I hope I can hold the chassis firmly and rap the spanner with a dead blow hammer to get it moving.
I don't have acetone but will clean with alcohol and microfiber towels

The spanner wrench and Ultimox 226 have been ordered
Tom has detailed post for this subject and I have it printed out just in case. Here is a link for that:
Maintenance - Modified assembly procedure for the regulator and air cylinder on original Evol models...

More links I have book marked: American Air Arms - All Things EVOL

ctshooter suggest that I adjust reg 90 degrees CW and should be close to 1900psi and I will try that.
Dairyboy gave good directions to chrony fps until the speed doesn't increase. (will be using 22.07 ammo)
Then back it down 15-20 fps, I like that and really hope it works.
Will fill the air tube, note the pressures, and check in a day or two. Got fingers crossed that all goes smooth.
I thank each of you that have reached out and given sound advice to help me on this project!

 

[CTAirgunner]

Want to share my plan for adjusting Beths health;
First concern is I dont have a vise and that may be a problem getting the barrel loose. I hope I can hold the chassis firmly and rap the spanner with a dead blow hammer to get it moving.
I don't have acetone but will clean with alcohol and microfiber towels

The spanner wrench and Ultimox 226 have been ordered
Tom has detailed post for this subject and I have it printed out just in case. Here is a link for that:
Maintenance - Modified assembly procedure for the regulator and air cylinder on original Evol models...

More links I have book marked: American Air Arms - All Things EVOL

ctshooter suggest that I adjust reg 90 degrees CW and should be close to 1900psi and I will try that.
Dairyboy gave good directions to chrony fps until the speed doesn't increase. (will be using 22.07 ammo)
Then back it down 15-20 fps, I like that and really hope it works.
Will fill the air tube, note the pressures, and check in a day or two. Got fingers crossed that all goes smooth.
I thank each of you that have reached out and given sound advice to help me on this project!

With the support via other American air arms lovers, it looks like you're in tip top shape

 

[mr007s]

So I'm going to say the first slow shot was simply temp change, say put away cold and warmed up probably. But yeah ES is simply just not the right hammer spring tension with the reg pressure. Once you figure out what you want to shoot you'll want to change the reg pressure where your max fps is around 15-20fps above the target speed. Can take some trial and error but results are worth it.

Once I have the reg adjusted to say 1900psi and begin to find the HS setting where the fps stops climbing, is it harmful to adjust spring to coil bind and back off a couple rounds to start checking fps or move up a little each time from where it is at the beginning? Thinking the process could be quicker if The spring was tightened some from the start.

 

[CTAirgunner]

Once I have the reg adjusted to say 1900psi and begin to find the HS setting where the fps stops climbing, is it harmful to adjust spring to coil bind and back off a couple rounds to start checking fps or move up a little each time from where it is at the beginning? Thinking the process could be quicker if The spring was tightened some from the start.

You can adjust the hammer spring tension any time as long as the rifle is decocked. I personally leave my mini and paradigm out of their chassis when tuning for this reason. Little 1/8th turn adjustments, shoot a magazine to let it settle, then run a magazine over the chronograph, thats my process. It will take some time for the speed to settle under the new adjustment hence the 1 magazine off the chronograph before actually chronographing the next.

 

[mr007s]

ThANK YOU, sounds like a good plan.

 

[Dairyboy]

And as you mentioned you certainly can crank it in and then back off until you find the speed start to drop. As long as it's not cocked no damage will be done. Probably wouldn't damage anything even cocked but obviously better to not do that. And I also tuned mine out of the chassis also. But you can run into the problem of the HS adjuster sticking too far out and being an issue to get back in the chassis. If it is then you need to remove the butt stock and adjust inside the chassis.

 

[mr007s]

And as you mentioned you certainly can crank it in and then back off until you find the speed start to drop. As long as it's not cocked no damage will be done. Probably wouldn't damage anything even cocked but obviously better to not do that. And I also tuned mine out of the chassis also. But you can run into the problem of the HS adjuster sticking too far out and being an issue to get back in the chassis. If it is then you need to remove the butt stock and adjust inside the chassis.

since I am screwing in that will not be a problem.

 

[Dairyboy]

since I am screwing in that will not be a problem.

Yes however lowering your reg pressure you will end up screwed out further than you are now for the correct tune.