Hatsan Is my new Hatsan regulator broken?

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airgunutty

airgunutty

Member
Dec 1, 2024
81
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Stilwell oklahoma
If you have a minute I would like to pick your brain. I finally got my at44 going and I have the HS turned almost all the way in and getting about 50-55 shots between 200 bar full to 100 bar. So I thought I would be able to increase the number of shots by adding a hatsan regulator. It seemed like it went together well. No obvious leaks but my shot count is now at about 40 shots on a fill. I'm trying to do this without a chrono but thought since I was just looking for more shots I could do without one at this time. Any help would be appreciated. Thanks


One more thing. The hatsan regulator is different now. The plastic plenum has been replaced with a metal one and looks more like a huma. Don't know if that means anything. Instructions are non existing

Thanks again
 
Setting up a PCP without a chronograph is like building a deck without a tape measure. It's possible but it will take longer and it won't turn out as well.

Step 1. Read up on the $30 chronographs:

Anyone try the cheap Chronographs from Ebay and Amazon?

Anyone try these inexpensive chronographs that are $35? I'm not planning on tuning very often. I just need to tune for slugs. I've seen some youtube videos and a few positive post. Just wondering if anyone has compared one to a more expensive chronograph. Are they accurate, and consistant? Looks...
www.airgunnation.com www.airgunnation.com

Step 2. Order one.

While you wait for it to arrive, take a stab at adjusting the hammer spring tension. If it is still set the same as it was when the gun was unregulated, the hammer is most likely overdriving the valve and wasting air. Set up a target at 35 yards or so and shoot a 5 shot group. Then begin gradually reducing the hammer spring tension and fire a couple of test shots, and keep at it until the point of impact falls by about 1/2". At that point the gun will be using air more efficiently.
 
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nervoustrig said:
Setting up a PCP without a chronograph is like building a deck without a tape measure. It's possible but it will take longer and it won't turn out as well.

Step 1. Read up on the $30 chronographs:

Anyone try the cheap Chronographs from Ebay and Amazon?

Anyone try these inexpensive chronographs that are $35? I'm not planning on tuning very often. I just need to tune for slugs. I've seen some youtube videos and a few positive post. Just wondering if anyone has compared one to a more expensive chronograph. Are they accurate, and consistant? Looks...
www.airgunnation.com www.airgunnation.com

Step 2. Order one.

While you wait for it to arrive, take a stab at adjusting the hammer spring tension. If it is still set the same as it was when the gun was unregulated, the hammer is most likely overdriving the valve and wasting air. Set up a target at 35 yards or so and shoot a 5 shot group. Then begin gradually reducing the hammer spring tension and fire a couple of test shots, and keep at it until the point of impact falls by about 1/2". At that point the gun will be using air more efficiently.
Click to expand...
Thanks for taking the time to give me some insight and recommendations. One thing though. I have the hammer spring all the way in pre regulator and after regulator. And chronograph or not I can see that it has slowed the shot but also lowered my shot count by 15. I'm puzzled about this but @thammer told me that regulators sometimes reduces the shot count but makes the shots given more consistent speed wise. Not what I was trying to accomplish. I was looking to go from 55 up to 75 or 80 on shots between fills. So instead of gaining 25 -30 I lost 15.

smh...

Thanks again
 
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nervoustrig said:
All the way in means maximum hammer spring tension, which is very likely causing the gun to waste air...meaning the reason shot count is poor.
Click to expand...
How can that be? Perhaps my terminology is off, I'm a newb. I have the hammer spring turned clockwise all the way in and pre regulator was getting 50-55 shots. After regulator installed shots dropped dropped off to 40. By turning the hammer spring counter clockwise the shot count continues to drop down to 30 shots.

So this got me to thinking about the new design of the hatsan regulator. Is it possible that like the huma and lane regulators do I need to remove a oring so that it can breathe properly.
 
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Okay, got it...yeah it sounds like our terminology is getting crossed up. People typically use the phrase “all the way in” to describe the hammer spring being maximally compressed. But since you have tried moving it the opposite direction and found the shot count to get even worse, it sounds like your original setting was indeed at the minimum.

What we don’t know is whether this minimum setting is optimal for the new regulated pressure. When it was unregulated, you indicated it was working well over a pressure range of 200 bar down to 100 bar. What this would mean is, unless the regulator is set quite high—something north of 150 bar—the hammer strike is now too much and it is wasting air. This is a trivial thing to see with a chronograph by making slight adjustments to the hammer spring tension and checking to see if the velocity rises, falls, or stays the same.

Then what you want to do is find the maximum attainable velocity, and finish by reducing the hammer spring tension until the velocity falls just a little to about 95-97% of the maximum you found. When adjusted in this manner, it will use air efficiently and produce a stable velocity.

In the event there is not a sufficient range of adjustment to either go high enough to reach the plateau (max velocity) or low enough to see the velocity begin to fall, it signals the decision will need to be made to either alter the hammer spring (add spacers to increase preload, or shorten the spring to reduce preload, respectively), or change the regulator setpoint.
 
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nervoustrig said:
Okay, got it...yeah it sounds like our terminology is getting crossed up. People typically use the phrase “all the way in” to describe the hammer spring being maximally compressed. But since you have tried moving it the opposite direction and found the shot count to get even worse, it sounds like your original setting was indeed at the minimum.

What we don’t know is whether this minimum setting is optimal for the new regulated pressure. When it was unregulated, you indicated it was working well over a pressure range of 200 bar down to 100 bar. What this would mean is, unless the regulator is set quite high—something north of 150 bar—the hammer strike is now too much and it is wasting air. This is a trivial thing to see with a chronograph by making slight adjustments to the hammer spring tension and checking to see if the velocity rises, falls, or stays the same.

Then what you want to do is find the maximum attainable velocity, and finish by reducing the hammer spring tension until the velocity falls just a little to about 95-97% of the maximum you found. When adjusted in this manner, it will use air efficiently and produce a stable velocity.

In the event there is not a sufficient range of adjustment to either go high enough to reach the plateau (max velocity) or low enough to see the velocity begin to fall, it signals the decision will need to be made to either alter the hammer spring (add spacers to increase preload, or shorten the spring to reduce preload, respectively), or change the regulator setpoint.
Click to expand...
Thank you for taking the time to break that down for me.
I guess I will make a chrono my next must have item.
Thanks again
 
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