Hatsan 135 .22 Quattro trigger setting



Author Topic: Hatsan 135 .22 Quattro trigger setting  (Read 2643 times)

Offline Hatsanman13

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Hatsan 135 .22 Quattro trigger setting
« on: April 02, 2013, 07:40:59 PM »
Hatsan Quattro trigger Adjust is and love it. picture show what adjustment screw does.
I have set my just off Hair a Trigger.   I backed out the rear screw untill it was seamly with out contract  and back in a half turn. The trigger pull was lighted up a bit but still seem strong. Next is I down loaded the owner manual are read deeper on to what screw do what. then I turn the front screw down one ful turn.
Oh my gosh it was a do not sneeze Hair trigger. Then I backed out the front screw 1/2 turn ok now its is great possible 2 lbs to 2.5 lbs. complete with a very short travel.   now its put the x on target pull up trigger slack then squeeze off an well excuted planned shot.
 Quattro trigger   Adjusted properly will make your day. It very easly set to a match grade setting with no extra work needed. Always have a safe backstop when setting up your trigger. THE SAFETY WORKED EVEN WHEN IT WAS SET IN TO HAIR TRIGGER MODE.   :-*  Great shooting with a super trigger system thank Hatsan.

« Last Edit: October 02, 2013, 06:41:33 PM by Hatsanman13 »
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Offline Rudedawg

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #1 on: July 04, 2013, 02:56:03 AM »
Hello I ordered a Hatsan 125 that PA converted to nitro and it was one powerful rifle but I could not get the quattro trigger to adjust below 4#. I contacted Hatsan and talked to Rick and it seams that the versions sent to the US were not as fully adjustable as the European versions. I really wanted to keep the rifle but it had some other issues and the folks at PA were super about returning the rifle for credit within the 30 day trial period. I would not hesitate in ordering another one but will not until I can be guaranteed the trigger pull could be lightened to under 3#. Any advice?
Thanks in advance.
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Offline KRJoye

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #2 on: July 04, 2013, 10:01:36 AM »
After running about 600 pellets through my new .25 125th. The breaking in period has little affect on accurancy and trigger pull resistance. I really believe the heavy non-adjustible quatro trigger(US version) pull had a lot to do with accuracy.

After reading an internet article on the quatro and how it functions i decided to take it apart and try to tune it. It only takes 3 fasteners to remove the rifle from the stock. Be careful some of the trigger pins are so loose they will fall out before you can take a mental or physical pic of how it looks assembled. There is one external spring and one internal spring that you need to take note of orientation.

After disassembling and cleaning all the parts and trigger housing bracket i proceded to do the following to all the trigger action parts.

1) Wet sand and polish with steel wool all sides and mating surfaces.

2) Clean with kerosene then soak in light weight synthetic motor oil

3) Reassemble all trigger components carefully after lubing with lithium grease

4) Add a dab of `Goop' to ends of all the triggger action pivot pins to keep them from falling out upon reassembly

5) Trigger modification, the (2) trigger adjustment socket head cap screws when bottomed out(when fully adjusted in) barely are exposed to make any trigger pull reduction difference, so i carefully mounted the trigger in my vise and removed about a 1/16" of trigger surface that the cap screws seat on with a coarse file. Be careful only take it down 1/16" this is all you'll need.

After careful reassembly and oiling, and a good barrel bore cleaning(& oiling) i ran a few rounds throught the gun and tried adjusting the 2 trigger screws.

HOLY SMOKES WHAT A DIFFERENCE. I now have an adjustible trigger! The lighter pull has improved my accuracy tremendusly. I can hit my targets in a free standing position with ease.

Removing that 1/16" of matl off the (2) cap screw trigger surface has made a huge difference!

Note: The trigger itself can be removed(by removing 1 pivot pin) and modified without going through cleaning up the other components like i did. I think it sure helped smooth out the action.

Reference article link:    http://webcache.googleusercontent.com/search?q=cache:-IV6LJzI3Y8J:www.network54.com/Forum/79537/thread/1301669829/Hatsan%2BQuattro%2Btrigger%2B+hatsan+quattro+trigger&cd=6&hl=en&ct=clnk&gl=us     


     
« Last Edit: July 04, 2013, 05:38:54 PM by KRJoye »
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Offline KRJoye

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #3 on: July 04, 2013, 04:06:27 PM »
Pic of modified area (non gold).
« Last Edit: July 04, 2013, 05:51:08 PM by KRJoye »
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MENDOZA 2000 (.22 repeater)
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Offline SpringerForever

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #4 on: July 10, 2013, 02:53:33 AM »
Longer screws might be easier. That's what I've done on all of my Hatsans & one Walter Talon Magnum (basically a Hatsan 125). I use 16mm screws that I shorten for the specific rifle. The reason I do that is because there seems to be some under the head length variability. On my Hatsan 155 .22 it was ~14mm. Two others I've measured were ~11mm & ~11.82mm.

It's definitely possible to adjust the trigger to a hair trigger with the longer screws. And the stock pull definitely negatively impacted my accuracy. Strangely enuf not too bad with a trigger weight of ~3-4#s but since I haven't smoothed any of the triggers yet there's still variability in the pull which throws off my accuracy since I'm expecting the trigger to release at a certain level & when it doesn't I sometimes find myself pulling the shot to the right due to the suddenly heavier pull. Solved that problem by adjusting all but one of the Hatsans/Walther to a hair trigger. The variability is still there but it doesn't have as much of an affect on my trigger pull as it did with the heavier pull weight.

Offline Paul68

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #5 on: July 10, 2013, 11:41:21 AM »
Modifying the Hatsan Quatro with longer screws is a dangerous procedure and should not be done unless you know what you are doing, and are willing to accept the consequences of your mistakes. It is not recommended by GTA. The Quatro is a very touchy design that is not forgiving of adjustment errors, and easily produces a random misfire condition when improperly/over adjusted. Also, filing material from the trigger blade accomplishes the same thing as installing longer screws and can result in the same problems.
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Offline Hatsanman13

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #6 on: July 10, 2013, 07:29:40 PM »
135 Trigger is very adjustable if you turn the right screw the right way ;)

yes factory set is heavy the back screw is lbs setting on the front trigger stage.   
Try the front screw  I did turn it a full turn down and oh my god what a hair trigger it gave LOL.

I back it up a half then shot a few rounds and tweak it down until it was a light crisp trigger POW you love when you figure out the adjustment how too do it.
  • Tallahassee Florida
Relax,stay focused with each shot ! Enjoy each shot. A springer shooter for over 30 years.
Hatsan 135 .22 Vortex Leapers 4x16x56x30mm
Piston since (Oct 2013)*******
Hatsan 135 .22 CP 4x16x40m - (2013)*****
Webley Scott Vulcan .177  - (1980)*****
Walther LP53 .177 Pistol - (1980)*****
Others :
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Winchester 1000s .177 nasty triggered
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Offline KRJoye

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #7 on: July 11, 2013, 04:07:55 PM »
Obviously you got one that has the correct length screws. When i pulled my 135th .25 mechinism apart, the screws when fully turned in barely crest the surface on the other side. Precisely why i filed the front surface down a 1/16". Without this mod(or installing slightly longer screws) the trigger adjustment feature is ineffective. The lighter trigger increased the accuracy tremendously. Of course proper care must be taken not to go to far....     
  • Romeo, Mi.
EVANIX RAINSTORM II (.25)
MENDOZA 2000 (.22 repeater)
BENJAMIN TITAN NP(.22)
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Offline Birdbow

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #8 on: July 11, 2013, 09:51:45 PM »
I'm in the process of getting one of these, good info.
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Offline SpringerForever

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #9 on: July 12, 2013, 11:21:19 PM »
Modifying the Hatsan Quatro with longer screws is a dangerous procedure and should not be done unless you know what you are doing, and are willing to accept the consequences of your mistakes. It is not recommended by GTA. The Quatro is a very touchy design that is not forgiving of adjustment errors, and easily produces a random misfire condition when improperly/over adjusted. Also, filing material from the trigger blade accomplishes the same thing as installing longer screws and can result in the same problems.

+1.

I learned that with my 1st Hatsan, a 155 .22. OEM screws were too short to effectively adjust trigger pull @ ~14mm under head so I initially replaced them with screws with ~16mm under head but those produced an unsafe condition at lower trigger pull weights. Even backing off the adjustment to ~3-4# pull weight resulted in an occasional unsafe condition so I re-installed the OEM screws & traded it for a spring powered 125 Sniper .22 which I've modded with the ~16mm screws  slightly shortened since the OEM screws on this gun were a little shorter to begin with. No problems with this mod on this gun or my gas powered 125 Sniper .25 or my spring powered WTM (judging from the FPE I think it's the equivalent of my 155 or the 135) .22. FWIW, the only difference between my old Hatsan 155 & my current Hatsans is that the 155 is an underlever while all of the others are break barrels. Don't see why that would make a difference but so far I've had no issues with the mod on the break barrels & I have all of them set up with an essentially hair trigger with a relatively short 1st stage. Haven't actually measured the trigger pull but I'd guess sub 1# to just slightly over. I'll eventually get around to measuring it tho. Nice change from the measured stock trigger pull of 8#-9# for the WTM & 6#-8# for the 155. Variability is due to the poor mating surfaces. That's why I've adjusted all the guns to hair triggers because I was still finding that occasionally the trigger pull would become heavier for a bit then it would return to my previously adjusted setting so I just adjusted that completely out of the trigger. Otherwise I would find myself slightly pulling the shot to the right due to the sudden & unanticipated change in pull weight. Smoothing the trigger mating surfaces would probably go a long way toward either minimizing the changes in pull weight or completely eliminating them, just haven't got around to doing that.

Also, with the change to set screws for all trigger adjusting screws there's no longer a built-in 'safety' limit. One of my Hatsans had those trigger adjusting set screws but I replaced them with better quality 'headed' screws. My preference as the set screws tend to get 'wallowed' out too easily.
« Last Edit: July 12, 2013, 11:36:24 PM by SpringerForever »

Offline SpringerForever

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #10 on: July 13, 2013, 12:01:30 AM »
Obviously you got one that has the correct length screws. When i pulled my 135th .25 mechinism apart, the screws when fully turned in barely crest the surface on the other side. Precisely why i filed the front surface down a 1/16". Without this mod(or installing slightly longer screws) the trigger adjustment feature is ineffective. The lighter trigger increased the accuracy tremendously. Of course proper care must be taken not to go to far....     

+1.

I/I've own/owned four Hatsans since 4/9/13 & three of the four that I measured had different length trigger adjusting screws @ ~11mm, ~11.82mm & ~14mm. Didn't bother measuring the 4th as it came with set screws instead but did replace them with 'headed' trigger adjusting screws. At least on the front two. And that's all I've done on all four of the rifles. The rear set screws were just replaced with better quality set screws.

Offline WHITEFANG

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #11 on: July 17, 2013, 08:49:41 AM »
With a little work that I will not reveal they both can be made light and safe. All of the quat triggers are on the same basic theory just some changes in the internals.
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Offline SpringerForever

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #12 on: July 24, 2013, 10:45:46 PM »
Finally got around to measuring the trigger pull on my two newer Hatsans:

Hatsan 125 Sniper .25 tested at 1lb 4.5oz - 1lb 5.9oz from ~5-6lbs originally
Wrote too soon about not having issues with a lighter pull on the break barrels. Initially had the trigger set at an even lower pull but within the last two shooting sessions the trigger failed to release the spring enuf times for me to increase both the pull & the length of the 1st stage to the above setting. No safety issue as far as I could determine tho with the lighter trigger pull. Took the safety off, pointed the muzzle at the ground & then smacked the heck out of the butt with my palm repeatedly & it didn't fire. Unlike the Hatsan 155 .22 which would fire when the safety was pulled back (off) with a lighter trigger pull.

Walther Talon Magnum (WTM) .22 tested at 15.7oz - 1lb 1.5oz from ~6-8lbs originally
Just re-branded Hatsan 125 or 135. From the FPE I'd guess 135. Currently my most powerful springer @ 30+FPE. So far no issues at this trigger pull.

Both tested yesterday, 7/23/13, with a Lyman digital trigger pull gauge for 3-5 pulls & with a slightly upward pull as that produces a slightly lower pull & because that's how I pull the trigger.

Other than the replacement of the two front screws with longer ones & the rear set screws with better quality set screws both rifles are still stock. In other words I haven't done anything to the internals. I'll eventually get around to smoothing the trigger parts & taking a look at the piston seals.

FWIW, the Hatsan 155 .22 developed safety issues at ~1lb 5oz. I increased the pull in steps until the safety issue was resolved but that returned the rifle to original settings so I just re-installed the stock screws & left it stock but with a lower trigger pull at ~3-4lbs. Originally it was 5-6lbs so it was still at least an improvement.
« Last Edit: July 24, 2013, 11:03:48 PM by SpringerForever »

Offline Paul68

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #13 on: July 25, 2013, 01:57:49 PM »
The WTM is a rebranded 125.
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Offline KRJoye

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #14 on: July 25, 2013, 02:23:45 PM »
Springer forever: Great News i think my mods have led me to similiar results on my 135th. How do you like the 155? Noticed the price has dropped(Pyramid) on the Hatsan Magnum Springers.Must be the start of clearing them out for the new gas jobs. 
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Offline SpringerForever

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #15 on: July 27, 2013, 03:31:35 AM »
The WTM is a rebranded 125.

Thanks for the confirmation.

Altho it doesn't shoot like a 125. I've got two, one in .22 & the other in .25 & neither of them are as powerful as the WTM. Here are the highest FPE #'s I've obtained so far:

WTM .22 - 29.2 FPE with 16.36gr H&N Terminators (stink!). I've only chronied 6 pellets so far but I'm pretty sure that it's the most powerful AG I've shot since I took up AGing again a little over 3 months ago. As a reference my former Hatsan 155's (same powerplant as 135) .22 highest FPE was with the 14.3gr Benjamin Discovery Pointed Expanding (AKA Crosman Destroyer) at 29.14 FPE. That's out of 14 pellets chronied with that gun! I'm pretty sure the WTM would shoot over 30 FPE with the CP 14.3gr. Best shooting pellet is the the Beeman Kodiak Dome 21.14gr (AKA H&N Baracuda Dome 21.14gr) at 28.84 FPE (28.62 FPE).

125 .22 - 25.43 FPE with 18gr AA Diabolo Field Heavy Domes. That's out of 6 pellets I've chronied so far with this gun. Best shooting pellet is the the Beeman Kodiak Dome 21.14gr (AKA H&N Baracuda Dome 21.14gr) but no chrony #'s. Gas powered.

125 .25 - 28.11 FPE with 26gr Predator Polymags (stink!). Out of 8 pellets chronied so far. Best shooting pellet is the H&N FTT at 19.91gr & 26.02 FPE. Spring powered.
« Last Edit: October 13, 2014, 12:01:14 AM by amb5500c »

Offline SpringerForever

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Re: Hatsan 135 .22 Quattro trigger setting
« Reply #16 on: July 27, 2013, 04:09:14 AM »
Springer forever: Great News i think my mods have led me to similiar results on my 135th. How do you like the 155? Noticed the price has dropped(Pyramid) on the Hatsan Magnum Springers.Must be the start of clearing them out for the new gas jobs.

No longer have the 155. Had issues & HatsanUSA was kind enuf to allow me to exchange it for a 125 Sniper in the same caliber.

How do you word it... "Air Guns" or "AirGuns"?