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RSA Trigger Install?


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#1 tbryanh

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Posted 24 May 2014 - 09:20 PM

I installed the RSA trigger in my Vepr .223.

The problem I am having is after a round is fired. the disconnector barely captures the hammer, so I am worried that there might multiple discharges with a single trigger pull. Also, I cannot get a two-stage trigger pull. Single-stage only.

 

Attached File  disconnector engagement.JPG   1.57MB   0 downloads


Edited by tbryanh, 24 May 2014 - 09:23 PM.


#2 tbryanh

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Posted 24 May 2014 - 09:28 PM

The problem is happening because the front of the base of the trigger hits the receiver too soon. This reduces the distance the trigger travels during a trigger pull. If the trigger could travel further, the disconnector would capture more of the hammer. All of the adjustment screws, except the one that adjusts the spring tension for the disconnector, have been removed, so the problem cannot be fixed by adjusting one of the screws.

 

 

Attached File  trigger base bottoming out.JPG   150.68KB   0 downloads


Edited by tbryanh, 24 May 2014 - 09:32 PM.


#3 tbryanh

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Posted 24 May 2014 - 09:36 PM

By comparing the two triggers, it appears the problem can be solved by modifying the profile of the base of the RSA trigger so that it is similar to profile of the base of the Molot trigger. Any suggestions?
 

 

Attached File  triggers side by side.JPG   1.55MB   0 downloads


Note: A slip of paper titled "New Redesigned Redstararms/Power Custom AK Trigger" was included with the trigger. Among other things, the slip of paper says "The trigger has been widen, and opened up in the rear to clear the trigger guard rivets. Some AK's may need the receiver window altered to allow the trigger to fit through the receiver hole so, it will move freely in the receiver...."



#4 Captain Hero

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Posted 24 May 2014 - 10:14 PM

Have you tried it with the factory disconnector?


Not that it will solve the issue, Im just curious like that. Looks like some dremel work may be in order.


Captain hero u always have a slutty avatar, u don't get laid do u u fat fuckin retard. Serve ur fucking country and suck a dick.


#5 tbryanh

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Posted 25 May 2014 - 08:19 AM

I haven't tried the factory disconnector. I think the keeper tbe gets damaged when taking the factory trigger apart, so I think I will not take the factory trigger apart.



#6 Captain Hero

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Posted 25 May 2014 - 09:58 AM

What's thus keeper you speak of?

Captain hero u always have a slutty avatar, u don't get laid do u u fat fuckin retard. Serve ur fucking country and suck a dick.


#7 tbryanh

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Posted 25 May 2014 - 12:50 PM

The tube that is flaired on each end that keeps the trigger assembled. The Molot trigger has it. The RSA trigger has a solid shaft that is pushed out when the trigger is installed.


Edited by tbryanh, 25 May 2014 - 12:50 PM.


#8 Captain Hero

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Posted 25 May 2014 - 01:12 PM

Gotcha. So the sleeve is keeping you from wanting to disassemble it. No biggie. Did you compare the hammers? Im curious to see the differences if any.


Captain hero u always have a slutty avatar, u don't get laid do u u fat fuckin retard. Serve ur fucking country and suck a dick.


#9 tbryanh

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Posted 25 May 2014 - 02:37 PM

Attached File  hammers.JPG   1.63MB   0 downloads


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#10 tbryanh

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Posted 25 May 2014 - 03:14 PM

Attached File  hammers 2.JPG   1.23MB   0 downloads


From the package the trigger came in:

 

SKU   1895448806   A1-22

Red Star 7.62 Adjustable Trigger



#11 Captain Hero

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Posted 25 May 2014 - 10:17 PM

Thanks for the pics. I was always curious about the differences in them vs. factory parts.


Captain hero u always have a slutty avatar, u don't get laid do u u fat fuckin retard. Serve ur fucking country and suck a dick.


#12 JTE

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Posted 26 May 2014 - 12:04 AM

Take a pic of just the disconnect.  I believe you can relieve some of the metal on the bottom front edge of the disconnect, which will allow it to rotate further and create a safer engagement of the hammer.

 

Jack


Edited by JTE, 26 May 2014 - 12:10 AM.


#13 tbryanh

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Posted 26 May 2014 - 08:24 AM

Take a pic of just the disconnect.  I believe you can relieve some of the metal on the bottom front edge of the disconnect, which will allow it to rotate further and create a safer engagement of the hammer.

 

Jack

Thats a good idea. I might be able to mill the disconnector instead of the front of the base of the trigger.

 

Attached File  disconnector.JPG   1.1MB   0 downloads



#14 tbryanh

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Posted 26 May 2014 - 06:43 PM

Attached File  safety lever mod.JPG   1.41MB   0 downloads


Attached File  empty receiver.JPG   1.13MB   0 downloads


Attached File  molot hammer captured.JPG   1.3MB   0 downloads


Attached File  molot reset.JPG   1.49MB   0 downloads


Attached File  molot full reset.JPG   1.51MB   0 downloads


Attached File  rsa hammer captured.JPG   1.43MB   0 downloads


Attached File  rsa reset.JPG   1.4MB   0 downloads


Attached File  rsa full reset.JPG   1.45MB   0 downloads



#15 JTE

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Posted 26 May 2014 - 07:56 PM

That is the preferred method of increasing the engagement of the hammer.

 

Jack



#16 tbryanh

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Posted 27 May 2014 - 12:06 AM

Attached File  RSA Trigger and Disconnector Profiling.JPG   1.28MB   0 downloads


Attached File  trigger window.JPG   1.23MB   0 downloads

 

For the decription given in the picture of the empty reciever. A mistake wis made. When the word "hammer" was used, the word "trigger" should have been used instead. No modifications to the hammer were made.

 

Attached File  RSA Hammer Capture.JPG   1.24MB   0 downloads


Attached File  RSA Hammer Square.JPG   406.95KB   0 downloads


First I profiled both sides of the front of the base of the trigger. This allowed the trigger to travel further, but the disconnecter now hit the trigger window, so I opened up one side of the trigger window a tiny bit to allow the disconnecter to clear it.
 
The disconnecter captured the hammer better at this point but still not as well as the Molot trigger did.
 
Next I profiled the disconnecter. This allowed the disconnecter to capture the hammer as well as the Molot trigger did.
 
I now had a two-stage trigger, but the reset travel distance was too long, so I made an adjustment with the set screw on the disconnecter. Now I have a shorter reset for quick followup shots.
 
Profiling the disconnecter had the biggest effect. Looking back, I would have profiled the disconnecter first. That by itself may have turned out to be enough.
 
As JTE (Jack) says profiling the disconnecter is the "preferred method of increasing the engagement of the hammer." I tend to believe this.
 
One thing I am curious at this point is why Molot made their sear sit higher. They had to put a special lump on the hammer for this. I don't know what purpose it serves to have the sear sit higher.
 
 
 


Edited by tbryanh, 27 May 2014 - 05:23 PM.





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